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griddap Subset tabledap Make A Graph wms files Title Summary FGDC ISO 19115 Info Background Info RSS Email Institution Dataset ID
https://erddap.maracoos.org/erddap/tabledap/cbp_agg.subset https://erddap.maracoos.org/erddap/tabledap/cbp_agg https://erddap.maracoos.org/erddap/tabledap/cbp_agg.graph CBP Water Quality Monitoring Subset (1984-2018) This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/cbp_agg_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/cbp_agg_iso19115.xml https://erddap.maracoos.org/erddap/info/cbp_agg/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/cbp_agg.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=cbp_agg&showErrors=false&email= Penn State cbp_agg
https://erddap.maracoos.org/erddap/tabledap/CBP_CB1_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB1_1 https://erddap.maracoos.org/erddap/tabledap/CBP_CB1_1.graph CBP Water Quality Monitoring Subset (1984-2018), CB1 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB1_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB1_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB1_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB1_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB1_1&showErrors=false&email= Penn State CBP_CB1_1
https://erddap.maracoos.org/erddap/tabledap/CBP_CB2_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB2_1 https://erddap.maracoos.org/erddap/tabledap/CBP_CB2_1.graph CBP Water Quality Monitoring Subset (1984-2018), CB2 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB2_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB2_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB2_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB2_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB2_1&showErrors=false&email= Penn State CBP_CB2_1
https://erddap.maracoos.org/erddap/tabledap/CBP_CB2_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB2_2 https://erddap.maracoos.org/erddap/tabledap/CBP_CB2_2.graph CBP Water Quality Monitoring Subset (1984-2018), CB2 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB2_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB2_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB2_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB2_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB2_2&showErrors=false&email= Penn State CBP_CB2_2
https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_1 https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_1.graph CBP Water Quality Monitoring Subset (1984-2018), CB3 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB3_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB3_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB3_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB3_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB3_1&showErrors=false&email= Penn State CBP_CB3_1
https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_2 https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_2.graph CBP Water Quality Monitoring Subset (1984-2018), CB3 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB3_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB3_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB3_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB3_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB3_2&showErrors=false&email= Penn State CBP_CB3_2
https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_3C.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_3C https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_3C.graph CBP Water Quality Monitoring Subset (1984-2018), CB3 3C This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB3_3C_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB3_3C_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB3_3C/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB3_3C.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB3_3C&showErrors=false&email= Penn State CBP_CB3_3C
https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_3E.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_3E https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_3E.graph CBP Water Quality Monitoring Subset (1984-2018), CB3 3E This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB3_3E_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB3_3E_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB3_3E/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB3_3E.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB3_3E&showErrors=false&email= Penn State CBP_CB3_3E
https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_3W.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_3W https://erddap.maracoos.org/erddap/tabledap/CBP_CB3_3W.graph CBP Water Quality Monitoring Subset (1984-2018), CB3 3W This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB3_3W_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB3_3W_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB3_3W/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB3_3W.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB3_3W&showErrors=false&email= Penn State CBP_CB3_3W
https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_1C.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_1C https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_1C.graph CBP Water Quality Monitoring Subset (1984-2018), CB4 1C This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB4_1C_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB4_1C_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB4_1C/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB4_1C.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB4_1C&showErrors=false&email= Penn State CBP_CB4_1C
https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_1E.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_1E https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_1E.graph CBP Water Quality Monitoring Subset (1984-2018), CB4 1E This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB4_1E_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB4_1E_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB4_1E/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB4_1E.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB4_1E&showErrors=false&email= Penn State CBP_CB4_1E
https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_1W.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_1W https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_1W.graph CBP Water Quality Monitoring Subset (1984-2018), CB4 1W This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB4_1W_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB4_1W_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB4_1W/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB4_1W.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB4_1W&showErrors=false&email= Penn State CBP_CB4_1W
https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_2C.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_2C https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_2C.graph CBP Water Quality Monitoring Subset (1984-2018), CB4 2C This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB4_2C_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB4_2C_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB4_2C/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB4_2C.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB4_2C&showErrors=false&email= Penn State CBP_CB4_2C
https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_2E.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_2E https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_2E.graph CBP Water Quality Monitoring Subset (1984-2018), CB4 2E This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB4_2E_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB4_2E_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB4_2E/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB4_2E.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB4_2E&showErrors=false&email= Penn State CBP_CB4_2E
https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_2W.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_2W https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_2W.graph CBP Water Quality Monitoring Subset (1984-2018), CB4 2W This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB4_2W_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB4_2W_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB4_2W/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB4_2W.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB4_2W&showErrors=false&email= Penn State CBP_CB4_2W
https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_3C.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_3C https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_3C.graph CBP Water Quality Monitoring Subset (1984-2018), CB4 3C This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB4_3C_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB4_3C_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB4_3C/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB4_3C.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB4_3C&showErrors=false&email= Penn State CBP_CB4_3C
https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_3E.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_3E https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_3E.graph CBP Water Quality Monitoring Subset (1984-2018), CB4 3E This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB4_3E_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB4_3E_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB4_3E/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB4_3E.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB4_3E&showErrors=false&email= Penn State CBP_CB4_3E
https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_3W.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_3W https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_3W.graph CBP Water Quality Monitoring Subset (1984-2018), CB4 3W This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB4_3W_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB4_3W_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB4_3W/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB4_3W.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB4_3W&showErrors=false&email= Penn State CBP_CB4_3W
https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_4 https://erddap.maracoos.org/erddap/tabledap/CBP_CB4_4.graph CBP Water Quality Monitoring Subset (1984-2018), CB4 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB4_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB4_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB4_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB4_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB4_4&showErrors=false&email= Penn State CBP_CB4_4
https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_1 https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_1.graph CBP Water Quality Monitoring Subset (1984-2018), CB5 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB5_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB5_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB5_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB5_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB5_1&showErrors=false&email= Penn State CBP_CB5_1
https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_1W.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_1W https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_1W.graph CBP Water Quality Monitoring Subset (1984-2018), CB5 1W This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB5_1W_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB5_1W_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB5_1W/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB5_1W.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB5_1W&showErrors=false&email= Penn State CBP_CB5_1W
https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_2 https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_2.graph CBP Water Quality Monitoring Subset (1984-2018), CB5 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB5_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB5_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB5_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB5_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB5_2&showErrors=false&email= Penn State CBP_CB5_2
https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_3 https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_3.graph CBP Water Quality Monitoring Subset (1984-2018), CB5 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB5_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB5_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB5_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB5_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB5_3&showErrors=false&email= Penn State CBP_CB5_3
https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_4 https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_4.graph CBP Water Quality Monitoring Subset (1984-2018), CB5 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB5_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB5_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB5_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB5_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB5_4&showErrors=false&email= Penn State CBP_CB5_4
https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_4W.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_4W https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_4W.graph CBP Water Quality Monitoring Subset (1984-2018), CB5 4W This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB5_4W_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB5_4W_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB5_4W/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB5_4W.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB5_4W&showErrors=false&email= Penn State CBP_CB5_4W
https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_5.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_5 https://erddap.maracoos.org/erddap/tabledap/CBP_CB5_5.graph CBP Water Quality Monitoring Subset (1984-2018), CB5 5 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB5_5_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB5_5_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB5_5/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB5_5.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB5_5&showErrors=false&email= Penn State CBP_CB5_5
https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_1 https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_1.graph CBP Water Quality Monitoring Subset (1984-2018), CB6 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB6_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB6_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB6_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB6_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB6_1&showErrors=false&email= Penn State CBP_CB6_1
https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_2 https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_2.graph CBP Water Quality Monitoring Subset (1984-2018), CB6 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB6_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB6_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB6_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB6_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB6_2&showErrors=false&email= Penn State CBP_CB6_2
https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_3 https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_3.graph CBP Water Quality Monitoring Subset (1984-2018), CB6 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB6_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB6_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB6_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB6_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB6_3&showErrors=false&email= Penn State CBP_CB6_3
https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_4 https://erddap.maracoos.org/erddap/tabledap/CBP_CB6_4.graph CBP Water Quality Monitoring Subset (1984-2018), CB6 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB6_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB6_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB6_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB6_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB6_4&showErrors=false&email= Penn State CBP_CB6_4
https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_1 https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_1.graph CBP Water Quality Monitoring Subset (1984-2018), CB7 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB7_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB7_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB7_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB7_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB7_1&showErrors=false&email= Penn State CBP_CB7_1
https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_1N.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_1N https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_1N.graph CBP Water Quality Monitoring Subset (1984-2018), CB7 1N This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB7_1N_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB7_1N_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB7_1N/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB7_1N.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB7_1N&showErrors=false&email= Penn State CBP_CB7_1N
https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_1S.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_1S https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_1S.graph CBP Water Quality Monitoring Subset (1984-2018), CB7 1S This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB7_1S_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB7_1S_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB7_1S/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB7_1S.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB7_1S&showErrors=false&email= Penn State CBP_CB7_1S
https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_2 https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_2.graph CBP Water Quality Monitoring Subset (1984-2018), CB7 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB7_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB7_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB7_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB7_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB7_2&showErrors=false&email= Penn State CBP_CB7_2
https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_2E.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_2E https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_2E.graph CBP Water Quality Monitoring Subset (1984-2018), CB7 2E This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB7_2E_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB7_2E_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB7_2E/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB7_2E.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB7_2E&showErrors=false&email= Penn State CBP_CB7_2E
https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_3 https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_3.graph CBP Water Quality Monitoring Subset (1984-2018), CB7 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB7_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB7_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB7_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB7_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB7_3&showErrors=false&email= Penn State CBP_CB7_3
https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_3E.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_3E https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_3E.graph CBP Water Quality Monitoring Subset (1984-2018), CB7 3E This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB7_3E_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB7_3E_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB7_3E/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB7_3E.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB7_3E&showErrors=false&email= Penn State CBP_CB7_3E
https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_4 https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_4.graph CBP Water Quality Monitoring Subset (1984-2018), CB7 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB7_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB7_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB7_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB7_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB7_4&showErrors=false&email= Penn State CBP_CB7_4
https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_4N.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_4N https://erddap.maracoos.org/erddap/tabledap/CBP_CB7_4N.graph CBP Water Quality Monitoring Subset (1984-2018), CB7 4N This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB7_4N_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB7_4N_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB7_4N/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB7_4N.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB7_4N&showErrors=false&email= Penn State CBP_CB7_4N
https://erddap.maracoos.org/erddap/tabledap/CBP_CB8_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB8_1 https://erddap.maracoos.org/erddap/tabledap/CBP_CB8_1.graph CBP Water Quality Monitoring Subset (1984-2018), CB8 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB8_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB8_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB8_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB8_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB8_1&showErrors=false&email= Penn State CBP_CB8_1
https://erddap.maracoos.org/erddap/tabledap/CBP_CB8_1E.subset https://erddap.maracoos.org/erddap/tabledap/CBP_CB8_1E https://erddap.maracoos.org/erddap/tabledap/CBP_CB8_1E.graph CBP Water Quality Monitoring Subset (1984-2018), CB8 1E This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_CB8_1E_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_CB8_1E_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_CB8_1E/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_CB8_1E.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_CB8_1E&showErrors=false&email= Penn State CBP_CB8_1E
https://erddap.maracoos.org/erddap/tabledap/CBP_EE1_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_EE1_1 https://erddap.maracoos.org/erddap/tabledap/CBP_EE1_1.graph CBP Water Quality Monitoring Subset (1984-2018), EE1 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_EE1_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_EE1_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_EE1_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_EE1_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_EE1_1&showErrors=false&email= Penn State CBP_EE1_1
https://erddap.maracoos.org/erddap/tabledap/CBP_EE2_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_EE2_1 https://erddap.maracoos.org/erddap/tabledap/CBP_EE2_1.graph CBP Water Quality Monitoring Subset (1984-2018), EE2 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_EE2_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_EE2_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_EE2_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_EE2_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_EE2_1&showErrors=false&email= Penn State CBP_EE2_1
https://erddap.maracoos.org/erddap/tabledap/CBP_EE2_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_EE2_2 https://erddap.maracoos.org/erddap/tabledap/CBP_EE2_2.graph CBP Water Quality Monitoring Subset (1984-2018), EE2 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_EE2_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_EE2_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_EE2_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_EE2_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_EE2_2&showErrors=false&email= Penn State CBP_EE2_2
https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_1 https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_1.graph CBP Water Quality Monitoring Subset (1984-2018), EE3 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_EE3_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_EE3_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_EE3_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_EE3_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_EE3_1&showErrors=false&email= Penn State CBP_EE3_1
https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_2 https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_2.graph CBP Water Quality Monitoring Subset (1984-2018), EE3 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_EE3_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_EE3_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_EE3_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_EE3_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_EE3_2&showErrors=false&email= Penn State CBP_EE3_2
https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_3 https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_3.graph CBP Water Quality Monitoring Subset (1984-2018), EE3 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_EE3_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_EE3_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_EE3_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_EE3_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_EE3_3&showErrors=false&email= Penn State CBP_EE3_3
https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_4 https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_4.graph CBP Water Quality Monitoring Subset (1984-2018), EE3 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_EE3_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_EE3_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_EE3_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_EE3_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_EE3_4&showErrors=false&email= Penn State CBP_EE3_4
https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_5.subset https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_5 https://erddap.maracoos.org/erddap/tabledap/CBP_EE3_5.graph CBP Water Quality Monitoring Subset (1984-2018), EE3 5 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_EE3_5_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_EE3_5_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_EE3_5/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_EE3_5.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_EE3_5&showErrors=false&email= Penn State CBP_EE3_5
https://erddap.maracoos.org/erddap/tabledap/CBP_ET4_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_ET4_2 https://erddap.maracoos.org/erddap/tabledap/CBP_ET4_2.graph CBP Water Quality Monitoring Subset (1984-2018), ET4 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_ET4_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_ET4_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_ET4_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_ET4_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_ET4_2&showErrors=false&email= Penn State CBP_ET4_2
https://erddap.maracoos.org/erddap/tabledap/CBP_ET5_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_ET5_1 https://erddap.maracoos.org/erddap/tabledap/CBP_ET5_1.graph CBP Water Quality Monitoring Subset (1984-2018), ET5 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_ET5_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_ET5_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_ET5_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_ET5_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_ET5_1&showErrors=false&email= Penn State CBP_ET5_1
https://erddap.maracoos.org/erddap/tabledap/CBP_ET5_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_ET5_2 https://erddap.maracoos.org/erddap/tabledap/CBP_ET5_2.graph CBP Water Quality Monitoring Subset (1984-2018), ET5 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_ET5_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_ET5_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_ET5_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_ET5_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_ET5_2&showErrors=false&email= Penn State CBP_ET5_2
https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_1 https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_1.graph CBP Water Quality Monitoring Subset (1984-2018), LE1 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE1_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE1_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE1_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE1_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE1_1&showErrors=false&email= Penn State CBP_LE1_1
https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_2 https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_2.graph CBP Water Quality Monitoring Subset (1984-2018), LE1 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE1_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE1_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE1_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE1_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE1_2&showErrors=false&email= Penn State CBP_LE1_2
https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_3 https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_3.graph CBP Water Quality Monitoring Subset (1984-2018), LE1 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE1_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE1_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE1_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE1_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE1_3&showErrors=false&email= Penn State CBP_LE1_3
https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_4 https://erddap.maracoos.org/erddap/tabledap/CBP_LE1_4.graph CBP Water Quality Monitoring Subset (1984-2018), LE1 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE1_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE1_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE1_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE1_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE1_4&showErrors=false&email= Penn State CBP_LE1_4
https://erddap.maracoos.org/erddap/tabledap/CBP_LE2_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE2_2 https://erddap.maracoos.org/erddap/tabledap/CBP_LE2_2.graph CBP Water Quality Monitoring Subset (1984-2018), LE2 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE2_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE2_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE2_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE2_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE2_2&showErrors=false&email= Penn State CBP_LE2_2
https://erddap.maracoos.org/erddap/tabledap/CBP_LE2_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE2_3 https://erddap.maracoos.org/erddap/tabledap/CBP_LE2_3.graph CBP Water Quality Monitoring Subset (1984-2018), LE2 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE2_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE2_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE2_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE2_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE2_3&showErrors=false&email= Penn State CBP_LE2_3
https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_1 https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_1.graph CBP Water Quality Monitoring Subset (1984-2018), LE3 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE3_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE3_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE3_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE3_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE3_1&showErrors=false&email= Penn State CBP_LE3_1
https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_2 https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_2.graph CBP Water Quality Monitoring Subset (1984-2018), LE3 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE3_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE3_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE3_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE3_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE3_2&showErrors=false&email= Penn State CBP_LE3_2
https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_3 https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_3.graph CBP Water Quality Monitoring Subset (1984-2018), LE3 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE3_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE3_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE3_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE3_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE3_3&showErrors=false&email= Penn State CBP_LE3_3
https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_4 https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_4.graph CBP Water Quality Monitoring Subset (1984-2018), LE3 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE3_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE3_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE3_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE3_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE3_4&showErrors=false&email= Penn State CBP_LE3_4
https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_6.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_6 https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_6.graph CBP Water Quality Monitoring Subset (1984-2018), LE3 6 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE3_6_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE3_6_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE3_6/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE3_6.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE3_6&showErrors=false&email= Penn State CBP_LE3_6
https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_7.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_7 https://erddap.maracoos.org/erddap/tabledap/CBP_LE3_7.graph CBP Water Quality Monitoring Subset (1984-2018), LE3 7 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE3_7_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE3_7_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE3_7/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE3_7.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE3_7&showErrors=false&email= Penn State CBP_LE3_7
https://erddap.maracoos.org/erddap/tabledap/CBP_LE4_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE4_1 https://erddap.maracoos.org/erddap/tabledap/CBP_LE4_1.graph CBP Water Quality Monitoring Subset (1984-2018), LE4 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE4_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE4_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE4_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE4_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE4_1&showErrors=false&email= Penn State CBP_LE4_1
https://erddap.maracoos.org/erddap/tabledap/CBP_LE4_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE4_2 https://erddap.maracoos.org/erddap/tabledap/CBP_LE4_2.graph CBP Water Quality Monitoring Subset (1984-2018), LE4 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE4_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE4_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE4_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE4_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE4_2&showErrors=false&email= Penn State CBP_LE4_2
https://erddap.maracoos.org/erddap/tabledap/CBP_LE4_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE4_3 https://erddap.maracoos.org/erddap/tabledap/CBP_LE4_3.graph CBP Water Quality Monitoring Subset (1984-2018), LE4 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE4_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE4_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE4_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE4_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE4_3&showErrors=false&email= Penn State CBP_LE4_3
https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_1 https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_1.graph CBP Water Quality Monitoring Subset (1984-2018), LE5 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE5_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE5_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE5_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE5_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE5_1&showErrors=false&email= Penn State CBP_LE5_1
https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_2 https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_2.graph CBP Water Quality Monitoring Subset (1984-2018), LE5 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE5_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE5_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE5_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE5_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE5_2&showErrors=false&email= Penn State CBP_LE5_2
https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_3 https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_3.graph CBP Water Quality Monitoring Subset (1984-2018), LE5 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE5_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE5_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE5_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE5_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE5_3&showErrors=false&email= Penn State CBP_LE5_3
https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_4 https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_4.graph CBP Water Quality Monitoring Subset (1984-2018), LE5 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE5_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE5_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE5_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE5_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE5_4&showErrors=false&email= Penn State CBP_LE5_4
https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_6.subset https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_6 https://erddap.maracoos.org/erddap/tabledap/CBP_LE5_6.graph CBP Water Quality Monitoring Subset (1984-2018), LE5 6 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_LE5_6_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_LE5_6_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_LE5_6/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_LE5_6.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_LE5_6&showErrors=false&email= Penn State CBP_LE5_6
https://erddap.maracoos.org/erddap/tabledap/CBP_MAT0016.subset https://erddap.maracoos.org/erddap/tabledap/CBP_MAT0016 https://erddap.maracoos.org/erddap/tabledap/CBP_MAT0016.graph CBP Water Quality Monitoring Subset (1984-2018), MAT0016 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_MAT0016_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_MAT0016_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_MAT0016/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_MAT0016.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_MAT0016&showErrors=false&email= Penn State CBP_MAT0016
https://erddap.maracoos.org/erddap/tabledap/CBP_RET1_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_RET1_1 https://erddap.maracoos.org/erddap/tabledap/CBP_RET1_1.graph CBP Water Quality Monitoring Subset (1984-2018), RET1 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_RET1_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_RET1_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_RET1_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_RET1_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_RET1_1&showErrors=false&email= Penn State CBP_RET1_1
https://erddap.maracoos.org/erddap/tabledap/CBP_RET2_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_RET2_1 https://erddap.maracoos.org/erddap/tabledap/CBP_RET2_1.graph CBP Water Quality Monitoring Subset (1984-2018), RET2 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_RET2_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_RET2_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_RET2_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_RET2_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_RET2_1&showErrors=false&email= Penn State CBP_RET2_1
https://erddap.maracoos.org/erddap/tabledap/CBP_RET2_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_RET2_2 https://erddap.maracoos.org/erddap/tabledap/CBP_RET2_2.graph CBP Water Quality Monitoring Subset (1984-2018), RET2 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_RET2_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_RET2_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_RET2_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_RET2_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_RET2_2&showErrors=false&email= Penn State CBP_RET2_2
https://erddap.maracoos.org/erddap/tabledap/CBP_RET2_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_RET2_4 https://erddap.maracoos.org/erddap/tabledap/CBP_RET2_4.graph CBP Water Quality Monitoring Subset (1984-2018), RET2 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_RET2_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_RET2_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_RET2_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_RET2_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_RET2_4&showErrors=false&email= Penn State CBP_RET2_4
https://erddap.maracoos.org/erddap/tabledap/CBP_RET3_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_RET3_1 https://erddap.maracoos.org/erddap/tabledap/CBP_RET3_1.graph CBP Water Quality Monitoring Subset (1984-2018), RET3 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_RET3_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_RET3_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_RET3_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_RET3_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_RET3_1&showErrors=false&email= Penn State CBP_RET3_1
https://erddap.maracoos.org/erddap/tabledap/CBP_RET3_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_RET3_2 https://erddap.maracoos.org/erddap/tabledap/CBP_RET3_2.graph CBP Water Quality Monitoring Subset (1984-2018), RET3 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_RET3_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_RET3_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_RET3_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_RET3_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_RET3_2&showErrors=false&email= Penn State CBP_RET3_2
https://erddap.maracoos.org/erddap/tabledap/CBP_RET4_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_RET4_1 https://erddap.maracoos.org/erddap/tabledap/CBP_RET4_1.graph CBP Water Quality Monitoring Subset (1984-2018), RET4 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_RET4_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_RET4_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_RET4_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_RET4_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_RET4_1&showErrors=false&email= Penn State CBP_RET4_1
https://erddap.maracoos.org/erddap/tabledap/CBP_RET4_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_RET4_2 https://erddap.maracoos.org/erddap/tabledap/CBP_RET4_2.graph CBP Water Quality Monitoring Subset (1984-2018), RET4 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_RET4_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_RET4_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_RET4_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_RET4_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_RET4_2&showErrors=false&email= Penn State CBP_RET4_2
https://erddap.maracoos.org/erddap/tabledap/CBP_RET4_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_RET4_3 https://erddap.maracoos.org/erddap/tabledap/CBP_RET4_3.graph CBP Water Quality Monitoring Subset (1984-2018), RET4 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_RET4_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_RET4_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_RET4_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_RET4_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_RET4_3&showErrors=false&email= Penn State CBP_RET4_3
https://erddap.maracoos.org/erddap/tabledap/CBP_RET5_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_RET5_2 https://erddap.maracoos.org/erddap/tabledap/CBP_RET5_2.graph CBP Water Quality Monitoring Subset (1984-2018), RET5 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_RET5_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_RET5_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_RET5_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_RET5_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_RET5_2&showErrors=false&email= Penn State CBP_RET5_2
https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_3 https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_3.graph CBP Water Quality Monitoring Subset (1984-2018), TF1 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_TF1_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_TF1_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_TF1_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_TF1_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_TF1_3&showErrors=false&email= Penn State CBP_TF1_3
https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_5.subset https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_5 https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_5.graph CBP Water Quality Monitoring Subset (1984-2018), TF1 5 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_TF1_5_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_TF1_5_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_TF1_5/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_TF1_5.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_TF1_5&showErrors=false&email= Penn State CBP_TF1_5
https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_6.subset https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_6 https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_6.graph CBP Water Quality Monitoring Subset (1984-2018), TF1 6 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_TF1_6_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_TF1_6_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_TF1_6/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_TF1_6.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_TF1_6&showErrors=false&email= Penn State CBP_TF1_6
https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_7.subset https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_7 https://erddap.maracoos.org/erddap/tabledap/CBP_TF1_7.graph CBP Water Quality Monitoring Subset (1984-2018), TF1 7 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_TF1_7_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_TF1_7_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_TF1_7/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_TF1_7.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_TF1_7&showErrors=false&email= Penn State CBP_TF1_7
https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_1 https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_1.graph CBP Water Quality Monitoring Subset (1984-2018), TF2 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_TF2_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_TF2_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_TF2_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_TF2_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_TF2_1&showErrors=false&email= Penn State CBP_TF2_1
https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_2 https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_2.graph CBP Water Quality Monitoring Subset (1984-2018), TF2 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_TF2_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_TF2_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_TF2_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_TF2_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_TF2_2&showErrors=false&email= Penn State CBP_TF2_2
https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_3 https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_3.graph CBP Water Quality Monitoring Subset (1984-2018), TF2 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_TF2_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_TF2_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_TF2_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_TF2_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_TF2_3&showErrors=false&email= Penn State CBP_TF2_3
https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_4 https://erddap.maracoos.org/erddap/tabledap/CBP_TF2_4.graph CBP Water Quality Monitoring Subset (1984-2018), TF2 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_TF2_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_TF2_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_TF2_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_TF2_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_TF2_4&showErrors=false&email= Penn State CBP_TF2_4
https://erddap.maracoos.org/erddap/tabledap/CBP_TF3_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_TF3_3 https://erddap.maracoos.org/erddap/tabledap/CBP_TF3_3.graph CBP Water Quality Monitoring Subset (1984-2018), TF3 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_TF3_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_TF3_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_TF3_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_TF3_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_TF3_3&showErrors=false&email= Penn State CBP_TF3_3
https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_1 https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_1.graph CBP Water Quality Monitoring Subset (1984-2018), WE4 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_WE4_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_WE4_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_WE4_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_WE4_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_WE4_1&showErrors=false&email= Penn State CBP_WE4_1
https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_2.subset https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_2 https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_2.graph CBP Water Quality Monitoring Subset (1984-2018), WE4 2 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_WE4_2_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_WE4_2_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_WE4_2/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_WE4_2.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_WE4_2&showErrors=false&email= Penn State CBP_WE4_2
https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_3.subset https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_3 https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_3.graph CBP Water Quality Monitoring Subset (1984-2018), WE4 3 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_WE4_3_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_WE4_3_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_WE4_3/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_WE4_3.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_WE4_3&showErrors=false&email= Penn State CBP_WE4_3
https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_4.subset https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_4 https://erddap.maracoos.org/erddap/tabledap/CBP_WE4_4.graph CBP Water Quality Monitoring Subset (1984-2018), WE4 4 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_WE4_4_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_WE4_4_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_WE4_4/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_WE4_4.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_WE4_4&showErrors=false&email= Penn State CBP_WE4_4
https://erddap.maracoos.org/erddap/tabledap/CBP_WT5_1.subset https://erddap.maracoos.org/erddap/tabledap/CBP_WT5_1 https://erddap.maracoos.org/erddap/tabledap/CBP_WT5_1.graph CBP Water Quality Monitoring Subset (1984-2018), WT5 1 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_WT5_1_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_WT5_1_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_WT5_1/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_WT5_1.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_WT5_1&showErrors=false&email= Penn State CBP_WT5_1
https://erddap.maracoos.org/erddap/tabledap/CBP_WXT0001.subset https://erddap.maracoos.org/erddap/tabledap/CBP_WXT0001 https://erddap.maracoos.org/erddap/tabledap/CBP_WXT0001.graph CBP Water Quality Monitoring Subset (1984-2018), WXT0001 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_WXT0001_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_WXT0001_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_WXT0001/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_WXT0001.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_WXT0001&showErrors=false&email= Penn State CBP_WXT0001
https://erddap.maracoos.org/erddap/tabledap/CBP_XFB1986.subset https://erddap.maracoos.org/erddap/tabledap/CBP_XFB1986 https://erddap.maracoos.org/erddap/tabledap/CBP_XFB1986.graph CBP Water Quality Monitoring Subset (1984-2018), XFB1986 This product was developed as part of the project supported by the grant from and the National Oceanic and Atmospheric Administration’s Ocean Acidification Program under award  NA18OAR0170430 to the Virginia Institute of Marine Science.  The data product consists of water quality data for tidal 98 stations for 1984­­–2018. The source data used to generate this product were downloaded from the Chesapeake Bay Program’s (CBP) data hub. Out of the total of 255 monitoring stations in the Tidal Monitoring Program, we selected 98 with the long monitoring record (30 years or longer). The following variables were downloaded from the data hub at the native temporal and vertical resolution (between one and four cruises per month and approximately 10 depth levels sampled between 0 and 37 m) for 1984–2018: water temperature (T), salinity (S), pH, total alkalinity (TA), dissolved oxygen (DO) , and chlorophyll (Chl).  All pH data prior to 1998 were removed because of the data quality concerns (Herrmann et al., 2020). Briefly, we found a dramatic difference in long-term trends between stations measured by institutions in the state of Virginia and stations measured by the state of Maryland, particularly from late spring to early fall. The boundary between the station groups runs east–west within the mesohaline portion of the bay, where the Potomac River estuary intersects the mainstem bay.  The boundary separates strong negative linear trends to the south (Virginia stations) from neutral and weakly positive linear trends to the north (Maryland stations).\nFor all variables, data entries marked with CBP’s “Problem” and “Qualifier” flags were removed.  Additionally, all variables were scanned for extreme outliers: for each variable, data from all stations, depths, and times were combined into a single composite sample for which the 75th and 25th percentiles (i.e., the upper and lower quantiles) and the interquartile range (the difference between the upper and lower quantiles) were calculated.  Extreme outliers were defined as the values falling outside of a certain number (censoring criterion) of interquartile ranges from the upper and lower quantiles.\n\ncdm_data_type = TimeSeriesProfile\nVARIABLES:\ntime (time of observation, seconds since 1970-01-01T00:00:00Z)\nstation_id (Platform Name)\nlatitude (station latitude, degrees_north)\nlongitude (station longitude, degrees_east)\n... (6 more variables)\n https://erddap.maracoos.org/erddap/metadata/fgdc/xml/CBP_XFB1986_fgdc.xml https://erddap.maracoos.org/erddap/metadata/iso19115/xml/CBP_XFB1986_iso19115.xml https://erddap.maracoos.org/erddap/info/CBP_XFB1986/index.htmlTable https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present (external link) http://erddap.maracoos.org/erddap/rss/CBP_XFB1986.rss https://erddap.maracoos.org/erddap/subscriptions/add.html?datasetID=CBP_XFB1986&showErrors=false&email= Penn State CBP_XFB1986

 
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