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Dataset Title:  Water Quality in the Fluvial Corridor and the Estuarine Transition Zone of the
St. Lawrence River, Lampsilis Annual Missions (MAL) | Qualité de l'eau du
couloir fluvial et de la zone de transition estuarienne du fleuve Saint-
Laurent, Missions annuelles Lampsilis (MAL)
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Institution:  Université du Québec à Trois-Rivières   (Dataset ID: uqtrLampsilisPhysicoChimie)
Range: longitude = -76.57788 to -69.54455°E, latitude = 44.19227 to 47.99°N, time = 2017-07-09 to 2022-08-07
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Subset | Data Access Form | Files
 
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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  Cruise {
    String ioos_category "Identifier";
    String long_name "Cruise";
    String name "Cruise";
    String units "unitless";
  }
  Station_ID {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station identifier";
    String name "Station_ID";
    String original_name "Station";
    String units "unitless";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.4995584e+9, 1.6598304e+9;
    String axis "T";
    String coverage_content_type "coordinate";
    String datatype "string";
    String ioos_category "Time";
    String long_name "Time";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0115/";
    String source_name "Date";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 44.19227, 47.99;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "Latitude coordinates of the measurement sites in decimal degrees (degrees north)";
    String ioos_category "Location";
    String long_name "Latitude";
    Float32 missing_value NaN;
    String name "Latitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 _FillValue 1.0e+36;
    Float32 actual_range -76.57788, -69.54455;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "Longitude coordinates of the measurement sites in decimal degrees (degrees east)";
    String ioos_category "Location";
    String long_name "Longitude";
    String name "Longitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0554/";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Sector {
    String ioos_category "Location";
    String long_name "geographic sector";
    String name "Sector";
    String original_name "Secteur géographique";
    String units "unitless";
  }
  Type {
    String long_name "Type of site";
    String name "Type";
    String original_name "Type de site";
    String units "unitless";
  }
  Waterbodies {
    String long_name "Water body";
    String name "Waterbodies";
    String original_name "Masse d'eau";
    String units "unitless";
  }
  Distance {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 0.0, 688.0;
    String long_name "Distance from the upstream (Lake Ontario )";
    String name "Distance";
    String original_name "Distance depuis l'amont (Lac Ontario)";
    String units "km";
  }
  Temperature {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 9.0, 28.4;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String instrument_name "YSI ProDSS";
    String ioos_category "Temperature";
    String long_name "Water temperature";
    String name "Temperature";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/";
    String nerc_standard_name "temperature_ITS-90_of_the_water_body";
    String original_name "Température";
    String scale "ITS-90";
    String standard_name "sea_water_temperature";
    String units "degree_C";
  }
  Pressure {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 750.9, 769.6;
    String instrument_name "YSI ProDSS";
    String ioos_category "Pressure";
    String long_name "Pressure";
    String name "Pressure";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PPSCZZ01/";
    String nerc_standard_name "pressure_exerted_by_the_water_body_plus_atmosphere";
    String original_name "Pression";
    String units "MMHg";
  }
  DissolvedOxygenPercent {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 0.94, 157.9;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String instrument_name "YSI ProDSS";
    String ioos_category "Dissolved O2";
    String long_name "Dissolved oxygen in water in percent";
    String name "DissolvedOxygenPercent";
    String original_name "OD_%";
    String standard_name "volume_fraction_of_oxygen_in_sea_water";
    String units "percent";
  }
  DissolvedOxygen {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 0.08, 13.7;
    Float64 colorBarMaximum 500.0;
    Float64 colorBarMinimum 0.0;
    String instrument_name "YSI ProDSS";
    String ioos_category "Dissolved O2";
    String long_name "Concentration of dissolved oxygen in water";
    String name "DissolvedOxygen";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/DOXYZZXX/";
    String nerc_standard_name "concentration_of_oxygen_per_unit_volume_of_the_water_body";
    String original_name "OD_mg-L";
    String standard_name "mass_concentration_of_oxygen_in_sea_water";
    String units "mg L-1";
  }
  Conductivity {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 22.0, 39400.0;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum 30.0;
    String ioos_category "Salinity";
    String long_name "water conductivity";
    Float32 missing_value NaN;
    String name "Conductivity";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CNDCZZ01/";
    String nerc_standard_name "electrical_conductivity_of_the_water_body";
    String original_name "conductivité";
    String standard_name "sea_water_electrical_conductivity";
    String units "µS cm-1";
  }
  pH {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 6.4, 8.77;
    Float64 colorBarMaximum 9.0;
    Float64 colorBarMinimum 7.0;
    String instrument_name "YSI ProDSS";
    String ioos_category "Other";
    String long_name "water pH";
    String name "pH";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PHNBISGE/";
    String nerc_standard_name "pH_of_the_water_body";
    String scale "NBS";
    String standard_name "sea_water_ph_reported_on_total_scale";
    String units "dimensionless";
  }
  Turbidity {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 0.0, 55.25;
    String instrument_name "YSI ProDSS";
    String ioos_category "Other";
    String long_name "Turbidity of water";
    Float32 missing_value NaN;
    String name "Turbidity";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/TURBXXXX/";
    String nerc_standard_name "turbidity_of_water_in_the_water_body";
    String original_name "Turbidité";
    String units "FNU";
  }
  Chla {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 0.331, 8.158;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String instrument_identifier "https://vocab.nerc.ac.uk/collection/L22/current/TOOL0393/";
    String instrument_name "Turner Designs 10AU fluorometer";
    String ioos_category "Other";
    String long_name "Chlorophyll-a concentration in water";
    String name "Chla";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CPHLZZXX/";
    String nerc_standard_name "concentration_of_chlorophyll-a_per_unit_volume_of_the_water_body";
    String original_name "Chl a";
    String standard_name "concentration_of_chlorophyll_in_sea_water";
    String units "µg L-1";
  }
  N_Total {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 0.147, 5.119;
    String instrument_identifier "https://vocab.nerc.ac.uk/collection/L22/current/TOOL0998/";
    String instrument_name "Lachat QuikChem 8500 flow injection analysis system";
    String ioos_category "Dissolved Nutrients";
    String long_name "Total nitrogen concentration in water";
    String name "N_Total";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/NTOTZZXX/";
    String nerc_standard_name "concentration_of_total_nitrogen_per_unit_volume_of_the_water_body";
    String original_name "NT";
    String units "mg L-1";
  }
  P_Total {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 2.549, 152.986;
    String instrument_identifier "https://vocab.nerc.ac.uk/collection/L22/current/TOOL0998/";
    String instrument_name "Lachat QuikChem 8500 flow injection analysis system";
    String ioos_category "Dissolved Nutrients";
    String long_name "Total phosphorus concentration";
    String name "P_Total";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/TPHSVLPT/";
    String nerc_standard_name "concentration_of_total_phosphorus_per_unit_volume_of_the_water_body";
    String original_name "PT";
    String units "µg L-1";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "Station_ID";
    String Conventions "CF-1.11, COARDS ACDD-1.3";
    String creator_email "Francois.Guillemette3@uqtr.ca";
    String creator_name "Francois Guillemette";
    String creator_type "person";
    String defaultDataQuery "&time>=min(time)";
    String defaultGraphQuery "&time>=min(time)";
    String DOI "https://doi.org/10.26071/3689-44de-8528-413e040c23d1";
    Float64 Easternmost_Easting -69.54455;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 47.99;
    Float64 geospatial_lat_min 44.19227;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -69.54455;
    Float64 geospatial_lon_min -76.57788;
    String geospatial_lon_units "degrees_east";
    String history 
"Latitude and longitude coordonnates were converted from degrees minutes to decimal degrees / netcdf file generated on 2024-07-03 from a csv with the custom SLGO app CFCM.
2024-11-06T03:13:55Z (local files)
2024-11-06T03:13:55Z https://erddap.ogsl.ca/tabledap/uqtrLampsilisPhysicoChimie.das";
    String infoUrl "https://www.rqm.quebec/missions-concertees/";
    String institution "Université du Québec à Trois-Rivières";
    String keywords "chlorophyll a, conductivity, dissolved oxygen, nitrogen, oceanographic mission, pH, phosphorus, physical-chemical, turbidity, water quality, water temperature";
    String keywords_fr "missions océanographiques, qualité eau, physico-chimie, température de l'eau, conductivité, oxygène dissous, pH, turbidité, chlorophylle a, azote, phosphore";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Creative Commons Attribution 4.0 International license CC-BY 4.0";
    String licenseUrl "https://creativecommons.org/licenses/by/4.0/";
    String mission_time_coverage_end "2022-08-07";
    String mission_time_coverage_start "2017-07-09";
    String nerc_standard_name_vocabulary "The NERC Vocabulary Server (NVS)";
    Float64 Northernmost_Northing 47.99;
    String platform "research vessel";
    String platform_description "Lampsilis";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
    String platformID_IMO "8744652";
    String related_items_1_identifier "https://doi.org/10.26071/ogsl-18969952-4203";
    String related_items_1_identifier_title "RQM - Données CTD de la mission concertée sur le Lampsilis (MAL2020) : Santé du Saint-Laurent 2020";
    String related_items_1_identifier_type "DOI";
    String related_items_1_relation_type "Is supplemented by";
    String related_items_1_type "Dataset";
    String related_items_2_identifier "https://doi.org/10.26071/ogsl-89fe412c-db99";
    String related_items_2_identifier_title "RQM - Données CTD de la mission concertée sur le Lampsilis (MAL2021) : Santé du Saint-Laurent 2021, 2e édition";
    String related_items_2_identifier_type "DOI";
    String related_items_2_relation_type "Is supplemented by";
    String related_items_2_type "Dataset";
    String related_items_3_identifier "https://doi.org/10.26071/ogsl-c336eea0-dc01";
    String related_items_3_identifier_title "RQM - Données CTD de la mission concertée sur le Lampsilis (MAL2022) : Santé du Saint-Laurent 2022, 3e édition";
    String related_items_3_identifier_type "DOI";
    String related_items_3_relation_type "Is supplemented by";
    String related_items_3_type "Dataset";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 44.19227;
    String standard_name_vocabulary "CF Standard Name Table v84";
    String subsetVariables "Cruise, Station_ID, Sector, Type, Waterbodies";
    String summary "Physico-chemical parameters of river water collected along the St. Lawrence River corridor in summer 2017, 2018, 2020, 2021, and 2022";
    String summary_fr "Paramètres physico-chimiques de l'eau de rivière prélevée dans le corridor du fleuve Saint-Laurent au cours des étés 2017, 2018, 2020, 2021 et 2022.";
    String time_coverage_end "2022-08-07";
    String time_coverage_start "2017-07-09";
    String title "Water Quality in the Fluvial Corridor and the Estuarine Transition Zone of the St. Lawrence River, Lampsilis Annual Missions (MAL) | Qualité de l'eau du couloir fluvial et de la zone de transition estuarienne du fleuve Saint-Laurent, Missions annuelles Lampsilis (MAL)";
    Float64 Westernmost_Easting -76.57788;
  }
}

 

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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