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Dataset Title:  Physico-Chemical and Carbonate Chemistry Parameters in the Shallow Coastal
Zone of Pointe-au-Père (St. Lawrence Estuary) : Discrete Water Samples Subscribe RSS
Institution:  Institut des sciences de la mer   (Dataset ID: ismerCarbonateChemistryPointeAuPereDS)
Range: longitude = -68.47045 to -68.47045°E, latitude = 48.51805 to 48.51805°N, time = 2023-07-03T18:45:00Z to 2024-10-22T14:45:00Z
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | 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 {
  measurementID {
    String ioos_category "Identifier";
    String long_name "Measurement identifier";
    String name "measurementID";
    String units "unitless";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6884099e+9, 1.7296083e+9;
    String axis "T";
    String cf_role "timeseries_id";
    String coverage_content_type "coordinate";
    String datatype "string";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0115/";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 48.51805, 48.51805;
    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 "lat";
    String standard_name "latitude";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0600/";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 _FillValue 1.0e+36;
    Float32 actual_range -68.47045, -68.47045;
    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";
    Float32 missing_value NaN;
    String name "lon";
    String standard_name "longitude";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CFSN0554/";
    String units "degrees_east";
  }
  pH_total_scale {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 7.56454, 7.911999;
    Float64 colorBarMaximum 9.0;
    Float64 colorBarMinimum 7.0;
    String colorBarPalette "YellowRed";
    String description "pH (total scale) measured at 25 °C using a spectrophotometer.";
    String ioos_category "Other";
    String long_name "Total-scale pH";
    String name "pH_total_scale";
    String original_name "pH (total scale)";
    String standard_name "sea_water_ph_reported_on_total_scale";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CF14N56/";
    String units "dimensionless";
  }
  total_alkalinity {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 1946.353, 2295.237;
    Float64 colorBarMaximum 2296.0;
    Float64 colorBarMinimum 1946.0;
    String colorBarPalette "YellowRed";
    String description "Total alkalinity measured by potentiometric titration.";
    String ioos_category "Other";
    String long_name "Total alkalinity";
    String name "total_alkalinity";
    String original_name "Total Alkalinity (µmol/Kg)";
    String standard_name "sea_water_alkalinity_per_unit_mass_expressed_as_mole_equivalent";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/TZPEWAT3/";
    String standard_name_nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MDMAP014/";
    String standard_nerc_name "total_alkalinity_per_unit_mass_of_the_water_body";
    String units "μmol kg-1";
  }
  DIC {
    Float32 _FillValue 1.0e+36;
    Float32 actual_range 1741.002, 3288.063;
    Float64 colorBarMaximum 3289.0;
    Float64 colorBarMinimum 1741.0;
    String colorBarPalette "YellowRed";
    String description "Dissolved inorganic carbon measured by a DIC analyzer.";
    String ioos_category "Dissolved Nutrients";
    String long_name "Dissolved inorganic carbon concentration";
    String name "DIC";
    String original_name "Dissolved Inorganic Carbon (µmol/Kg)";
    String standard_name "mole_concentration_of_dissolved_inorganic_carbon_in_sea_water";
    String standard_name_identifier "https://vocab.nerc.ac.uk/collection/P07/current/CF14N27/";
    String units "μmol kg-1";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "time";
    String contributor_institution "(1 - 3) Institut des sciences de la mer";
    String contributor_name "(1) Johanna Vega-Sequeda, (2) Gwénaëlle Chaillou, (3) Fanny Noisette";
    String contributor_role "(1) author, Metadata custodian, Data Owner, Point of contact ; (2) co-author, (3) co-author, Data Owner, Point of contact";
    String contributor_type "person";
    String Conventions "CF-1.11 COARDS ACDD-1.3, NCCSV-1.2";
    String creator_identifier "https://orcid.org/0000-0003-2507-8560";
    String creator_name "Johanna Vega-Sequeda";
    String creator_type "person";
    String defaultDataQuery "&time>=min(time)";
    String defaultGraphQuery "&time>=min(time)&.draw=linesAndMarkers&.bgColor=0xffffffff";
    Float64 Easternmost_Easting -68.47045;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 48.51805;
    Float64 geospatial_lat_min 48.51805;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -68.47045;
    Float64 geospatial_lon_min -68.47045;
    String geospatial_lon_units "degrees_east";
    String grid_mapping_epsg_code "EPSG:4326";
    String grid_mapping_epsg_code_url "https://epsg.io/4326";
    String grid_mapping_geographic_crs_name "WGS 84";
    String grid_mapping_inverse_flattening "298.2572236";
    String grid_mapping_name "latitude_longitude";
    String grid_mapping_prime_meridian_name "Greenwich";
    String grid_mapping_semi_major_axis "6378137";
    String history 
"2026-08-18T00:47:02Z (local files)
2026-08-18T00:47:02Z http://erddap.cioos.ca/tabledap/ismerCarbonateChemistryPointeAuPereDS.das";
    String infoUrl "https://doi.org/10.26071/80865272-7dcf-4dc4";
    String institution "Institut des sciences de la mer";
    String keywords "carbonate system parameter, coastal zone, inorganic carbon, pH, physical chemical";
    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 marine_region "St. Lawrence Estuary";
    String marine_region_identifier "http://marineregions.org/mrgid/23554";
    Float64 Northernmost_Northing 48.51805;
    String platform "diver";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 48.51805;
    String standard_name_nerc_vocabulary "The NERC Vocabulary Server (NVS)";
    String standard_name_vocabulary "CF Standard Name Table v90";
    String summary "This dataset includes all physicochemical parameters measured during the ice-free months: from July 3 to September 26, 2023, and from May 10 to October 22, 2024, at a maximum depth of 5.5 m at high tide. During these periods, high-frequency measurements were taken every 15 minutes using an autonomous logger (HOBO®) attached to a mooring to record pH, practical salinity, light, temperature, and water level. Note that in 2024, data are missing from May 15 to 21 due to partial burial caused by a significant episode of sediment resuspension.";
    String time_coverage_end "2024-10-22T14:45:00Z";
    String time_coverage_start "2023-07-03T18:45:00Z";
    String title "Physico-Chemical and Carbonate Chemistry Parameters in the Shallow Coastal Zone of Pointe-au-Père (St. Lawrence Estuary) : Discrete Water Samples";
    Float64 Westernmost_Easting -68.47045;
  }
}

 

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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