CBP_CB2_2
eng
UTF8
dataset
service
TBD
MARACOOS
401-789-6224
55 Village Square
South Kingstown
RI
028979
USA
devops@rpsgroup.com
pointOfContact
2024-03-28
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
4
column
row
vertical
temporal
CBP Water Quality Monitoring Subset (1984-2018), CB2 2
2021-08-26
creation
2021-08-26
issued
erddap.maracoos.org
CBP_CB2_2
Maria Herrmann
Penn State
mxh367@psu.edu
https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present
information
web browser
Background Information
Background information from the source
information
originator
Marjy Friedrichs
marjy@vims.edu
contributor
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).
For 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.
CBP data hub (https://www.chesapeakebay.net/what/data) and NOAA OA Program funding: "RVA-OA2017: Vulnerability of the largest U.S. estuary to acidification: Implications of declining pH for shellfish hatcheries in the Chesapeake Bay
Maria Herrmann
Penn State
mxh367@psu.edu
https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present
information
web browser
Background Information
Background information from the source
information
pointOfContact
'Oceans > Ocean Chemistry > Alkalinity''Oceans > Ocean Chemistry > Chlorophyll''Oceans > Salinity/Density > Salinity''Oceans > Ocean Temperature > Water Temperature''Oceans > Ocean Chemistry > Oxygen'
theme
GCMD Science Keywords
NSF OCE‐1537013 OCE‐1536996; NOAA OAP: NA18OAR0170430; PI: Marjorie Friedrichs (marjy@vims.edu)
project
time
platform_name
latitude
longitude
depth
mass_concentration_of_chlorophyll_in_sea_water
sea_water_practical_salinity
sea_water_temperature
mass_concentration_of_oxygen_in_sea_water
sea_water_ph_reported_on_total_scale
theme
CF Standard Name Table v55
The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
NSF OCE‐1537013 OCE‐1536996; NOAA OAP: NA18OAR0170430; PI: Marjorie Friedrichs (marjy@vims.edu)
largerWorkCitation
project
Unidata Common Data Model
TimeSeriesProfile
largerWorkCitation
project
eng
geoscientificInformation
1
-76.17579
-76.17579
39.34873
39.34873
seconds
1984-07-12T14:30:00Z
2018-12-13T09:50:00Z
-13.0
-0.2
CBP Water Quality Monitoring Subset (1984-2018), CB2 2
2021-08-26
creation
2021-08-26
issued
Maria Herrmann
Penn State
mxh367@psu.edu
https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present
information
web browser
Background Information
Background information from the source
information
originator
Marjy Friedrichs
marjy@vims.edu
contributor
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).
For 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.
ERDDAP tabledap
1
-76.17579
-76.17579
39.34873
39.34873
seconds
1984-07-12T14:30:00Z
2018-12-13T09:50:00Z
-13.0
-0.2
tight
ERDDAPtabledapDatasetQueryAndAccess
http://erddap.maracoos.org/erddap/tabledap/CBP_CB2_2
ERDDAP:tabledap
ERDDAP-tabledap
ERDDAP's tabledap service (a flavor of OPeNDAP) for tabular (sequence) data. Add different extensions (e.g., .html, .graph, .das, .dds) to the base URL for different purposes.
download
CBP Water Quality Monitoring Subset (1984-2018), CB2 2
2021-08-26
creation
2021-08-26
issued
Maria Herrmann
Penn State
mxh367@psu.edu
https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present
information
web browser
Background Information
Background information from the source
information
originator
Marjy Friedrichs
marjy@vims.edu
contributor
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).
For 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.
OPeNDAP
1
-76.17579
-76.17579
39.34873
39.34873
seconds
1984-07-12T14:30:00Z
2018-12-13T09:50:00Z
-13.0
-0.2
tight
OPeNDAPDatasetQueryAndAccess
http://erddap.maracoos.org/erddap/tabledap/CBP_CB2_2
OPeNDAP:OPeNDAP
OPeNDAP
An OPeNDAP service for tabular (sequence) data. Add different extensions (e.g., .html, .das, .dds) to the base URL for different purposes.
download
CBP Water Quality Monitoring Subset (1984-2018), CB2 2
2021-08-26
creation
2021-08-26
issued
Maria Herrmann
Penn State
mxh367@psu.edu
https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present
information
web browser
Background Information
Background information from the source
information
originator
Marjy Friedrichs
marjy@vims.edu
contributor
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).
For 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.
ERDDAP Subset
1
-76.17579
-76.17579
39.34873
39.34873
seconds
1984-07-12T14:30:00Z
2018-12-13T09:50:00Z
-13.0
-0.2
tight
ERDDAP_Subset
http://erddap.maracoos.org/erddap/tabledap/CBP_CB2_2.subset
search
Subset
Web page to facilitate selecting subsets of the dataset
download
physicalMeasurement
time
double
time of observation
station_id
String
Platform Name
chl
double
chlorophyll
salt
double
salinity
temp
double
Water Temperature
oxy
double
Dissolved Oxygen
pH
double
sea_water_ph_reported_on_NBS_scale
TBD
MARACOOS
401-789-6224
55 Village Square
South Kingstown
RI
028979
USA
devops@rpsgroup.com
distributor
OPeNDAP
DAP/2.0
http://erddap.maracoos.org/erddap/tabledap/CBP_CB2_2.html
order
Data Subset Form
ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types.
download
http://erddap.maracoos.org/erddap/tabledap/CBP_CB2_2.graph
order
Make-A-Graph Form
ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data.
mapDigital
dataset
[2021-08-26] Created NetCDF4 file from maracoos_set98.mat
This record was created from dataset metadata by ERDDAP Version 2.02