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Dataset Title:  CBP Water Quality Monitoring, CB7 1 Subscribe RSS
Institution:  Penn State College of Earth and Mineral Sciences   (Dataset ID: cbp_CB7_1)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Subset | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
   or a List of Values ?
   Maximum ?
 
 station_id ?          "CB7.1"    "CB7.1"
 time (time of observation, UTC) ?          1984-06-29T08:30:00Z    2018-12-12T11:43:00Z
  < slider >
 latitude (station latitude, degrees_north) ?          37.68346    37.68346
  < slider >
 longitude (station longitude, degrees_east) ?          -75.98966    -75.98966
  < slider >
 depth (m) ?      
   - +  ?
  < slider >
 chlorophyll (ug/L) ?          0.0    84.0
 salinity (ppt) ?          9.71    28.83
 pH ?          6.13    9.0
 dissolved_oxygen (mg/L) ?          0.3    14.9
 water_temperature (degree_C) ?          0.061    30.639
 
Server-side Functions ?
 distinct() ?
? ("Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.")

File type: (more info)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  station_id {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 4.57345799999997e+8, 1.54461498e+9;
    String axis "T";
    String cf_role "profile_id";
    String ioos_category "Time";
    String long_name "time of observation";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 37.68346, 37.68346;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "station latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -75.98966, -75.98966;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "station longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 actual_range 0.0, 27.0;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  chlorophyll {
    Float64 _FillValue -9999.0;
    Float64 actual_range 0.0, 84.0;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Ocean Color";
    String long_name "chlorophyll";
    String standard_name "concentration_of_chlorophyll_in_sea_water";
    String units "ug/L";
  }
  salinity {
    Float64 _FillValue -9999.0;
    Float64 actual_range 9.71, 28.83;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Salinity";
    String long_name "salinity";
    String standard_name "sea_water_practical_salinity";
    String units "ppt";
  }
  pH {
    Float64 _FillValue -9999.0;
    Float64 actual_range 6.13, 9.0;
    Float64 colorBarMaximum 9.0;
    Float64 colorBarMinimum 7.0;
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Salinity";
    String long_name "pH";
    String standard_name "sea_water_ph_reported_on_total_scale";
  }
  dissolved_oxygen {
    Float64 _FillValue -9999.0;
    Float64 actual_range 0.3, 14.9;
    Float64 colorBarMaximum 500.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Dissolved O2";
    String long_name "Dissolved Oxygen";
    String standard_name "mass_concentration_of_oxygen_in_sea_water";
    String units "mg/L";
  }
  water_temperature {
    Float64 _FillValue -9999.0;
    Float64 actual_range 0.061, 30.639;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Temperature";
    String long_name "Water Temperature";
    String standard_name "sea_water_temperature";
    String units "degree_C";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeriesProfile";
    String cdm_profile_variables "time";
    String cdm_timeseries_variables "station_id";
    String contributor_name "Marjy Friedrichs";
    String contributor_role "collaborator";
    String contributor_url "http://www.vims.edu/people/friedrichs_ma/";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String creator_insitution "Penn State College of Earth and Mineral Sciences";
    String creator_name "Maria Herrmann";
    String creator_type "person";
    String creator_url "http://www.met.psu.edu";
    String date_created "2019-11-20T19:55:41Z";
    Float64 Easternmost_Easting -75.98966;
    String featureType "TimeSeriesProfile";
    Float64 geospatial_lat_max 37.68346;
    Float64 geospatial_lat_min 37.68346;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -75.98966;
    Float64 geospatial_lon_min -75.98966;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 27.0;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"Initial creation
2021-02-25T02:15:12Z (local files)
2021-02-25T02:15:12Z http://erddap.maracoos.org/erddap/tabledap/cbp_CB7_1.html";
    String infoUrl "https://www.chesapeakebay.net/what/downloads/cbp_water_quality_database_1984_present";
    String institution "Penn State College of Earth and Mineral Sciences";
    String keywords "alkalinity, blh, carbon, carbon dioxide, chemistry, chlorophyll, co2, color, concentration, concentration_of_chlorophyll_in_sea_water, data, density, depth, dioxide, dissolved, dissolved o2, dissolved_oxygen, earth, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Chemistry > Oxygen, Earth Science > Oceans > Ocean Chemistry > pH, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Salinity, identifier, latitude, longitude, mass, mass_concentration_of_oxygen_in_sea_water, name, O2, observation, ocean, ocean color, oceans, oxygen, platform, platform_name, practical, reported, salinity, scale, science, sea, sea_water_ph_reported_on_total_scale, sea_water_practical_salinity, sea_water_temperature, seawater, station_name, temperature, time, total, vims, water, water_temperature, xfb1986";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"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.";
    String nodc_template_version "NODC_TimeSeriesProfile_Template_v2.0";
    Float64 Northernmost_Northing 37.68346;
    String source "vims";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 37.68346;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String subsetVariables "depth";
    String summary "Chesapeake Bay Program Water Quality Monitoring";
    String time_coverage_end "2018-12-12T11:43:00Z";
    String time_coverage_start "1984-06-29T08:30:00Z";
    String title "CBP Water Quality Monitoring, CB7 1";
    Float64 Westernmost_Easting -75.98966;
  }
}

 

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its selection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.


 
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