Data Access Form

Dataset Title:	Surface ocean carbon fields
Institution:	LSCE/CEA (Dataset ID: cmems_ocean_carbon_my)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Make a graph

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Dimensions	Size	Spacing
time (UTC)	468	30 days 10h 25m 57s (uneven)

latitude (degrees_north)	713	0.25 (even)

longitude (degrees_east)	1440	0.25 (even)

File type: (more information)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 4.745952e+8, 1.7025984e+9;
    String axis "T";
    String calendar "Gregorian";
    String ioos_category "Time";
    String long_name "Time";
    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";
    Float32 actual_range -88.125, 89.875;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 0.125, 359.875;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  spco2 {
    Float32 _FillValue 9.96921e+36;
    String ioos_category "CO2";
    String long_name "Surface aqueous partial pressure of CO2";
    String standard_name "surface_partial_pressure_of_carbon_dioxide_in_sea_water";
    String units "micro atm";
  }
  spco2_uncertainty {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Uncertainties (standard deviation) of surface aqueous partial pressure of CO2";
    String standard_name "uncertainty_surface_partial_pressure_of_carbon_dioxide_in_sea_water";
    String units "micro atm";
  }
  fgco2 {
    Float32 _FillValue 9.96921e+36;
    String ioos_category "CO2";
    String long_name "Surface downward flux of total CO2";
    String standard_name "surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon";
    String units "molC m-2 yr-1";
  }
  fgco2_uncertainty {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 0.1;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Uncertainties (standard deviation) of surface downward flux of total CO2";
    String standard_name "uncertainty_surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon";
    String units "molC m-2 yr-1";
  }
  ph {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 9.0;
    Float64 colorBarMinimum 7.0;
    String ioos_category "Salinity";
    String long_name "pH on total scale";
    String standard_name "sea_water_ph_reported_on_total_scale";
    String units "1";
  }
  ph_uncertainty {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 0.1;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Uncertainties (standard deviation) of pH on total scale";
    String standard_name "uncertainty_sea_water_ph_reported_on_total_scale";
    String units "1";
  }
  talk {
    Float32 _FillValue 9.96921e+36;
    String ioos_category "CO2";
    String long_name "Total alkalinity in surface seawater";
    String standard_name "total_alkalinity_in_sea_water";
    String units "micro mol kg-1";
  }
  talk_uncertainty {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 0.1;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Uncertainty (standard deviation) of total alkalinity in surface seawater";
    String standard_name "uncertainty_total_alkalinity_in_sea_water";
    String units "micro mol kg-1";
  }
  tco2 {
    Float32 _FillValue 9.96921e+36;
    String ioos_category "CO2";
    String long_name "Surface ocean dissolved inorganic carbon";
    String standard_name "dissolved_inorganic_carbon_in_sea_water";
    String units "micro mol kg-1";
  }
  tco2_uncertainty {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 0.1;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Uncertainty (standard deviation) of surface ocean dissolved inorganic carbon";
    String standard_name "uncertainty_dissolved_inorganic_carbon_in_sea_water";
    String units "micro mol kg-1";
  }
  omega_ca {
    Float32 _FillValue 9.96921e+36;
    String ioos_category "Hydrology";
    String long_name "Saturation state for surface seawater with respect to calcite";
    String standard_name "calcite_saturation_state_in_sea_water";
  }
  omega_ca_uncertainty {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Uncertainty (standard deviation) of saturation state for surface seawater with respect to calcite";
    String standard_name "uncertainty_calcite_saturation_state_in_sea_water";
  }
  omega_ar {
    Float32 _FillValue 9.96921e+36;
    String ioos_category "Hydrology";
    String long_name "Saturation state for surface seawater with respect to aragonite";
    String standard_name "aragonite_saturation_state_in_sea_water";
  }
  omega_ar_uncertainty {
    Float32 _FillValue 9.96921e+36;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "Uncertainty (standard deviation) of saturation state for surface seawater with respect to aragonite";
    String standard_name "uncertainty_aragonite_saturation_state_in_sea_wate";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "CF-1.10, COARDS, ACDD-1.3";
    String creator_name "LSCE/CEA";
    String creator_type "institution";
    String description "MULTIOBS Surface carbon fields";
    String domain_name "GLO";
    Float64 Easternmost_Easting 359.875;
    Float64 geospatial_lat_max 89.875;
    Float64 geospatial_lat_min -88.125;
    Float64 geospatial_lat_resolution 0.25;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 359.875;
    Float64 geospatial_lon_min 0.125;
    Float64 geospatial_lon_resolution 0.25;
    String geospatial_lon_units "degrees_east";
    String history 
"2025-04-25T20:07:19Z (local files)
2025-04-25T20:07:19Z https://erddap.marine.usf.edu/erddap/griddap/cmems_ocean_carbon_my.das";
    String infoUrl "???";
    String institution "LSCE/CEA";
    String keywords "alkalinity, aqueous, aragonite, aragonite_saturation_state_in_sea_water, atmosphere, atmospheric, calcite, calcite_saturation_state_in_sea_water, carbon, carbon dioxide, cea, chemistry, co2, compounds, data, deviation, dioxide, dissolved, dissolved_inorganic_carbon_in_sea_water, downward, earth, Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds, Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Carbon Dioxide, Earth Science > Oceans > Ocean Chemistry > Carbon, Earth Science > Oceans > Ocean Chemistry > Carbon Dioxide, Earth Science > Oceans > Ocean Chemistry > pH, expressed, fgco2, fgco2_uncertainty, fields, flux, hydrocarbon, hydrology, inorganic, latitude, longitude, lsce, mass, ocean, oceans, omega_ar, omega_ar_uncertainty, omega_ca, omega_ca_uncertainty, partial, ph_uncertainty, pressure, reported, respect, salinity, saturation, scale, science, sea, sea_water_ph_reported_on_total_scale, seawater, spco2, spco2_uncertainty, standard, state, statistics, surface, surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon, surface_partial_pressure_of_carbon_dioxide_in_sea_water, talk, talk_uncertainty, tco2, tco2_uncertainty, time, total, total_alkalinity_in_sea_water, uncertainties, uncertainty, uncertainty_aragonite_saturation_state_in_sea_wate, uncertainty_calcite_saturation_state_in_sea_water, uncertainty_dissolved_inorganic_carbon_in_sea_water, uncertainty_sea_water_ph_reported_on_total_scale, uncertainty_surface_downward_mass_flux_of_carbon_dioxide_expressed_as_carbon, uncertainty_surface_partial_pressure_of_carbon_dioxide_in_sea_water, uncertainty_total_alkalinity_in_sea_water, wate, water, with";
    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.";
    Float64 Northernmost_Northing 89.875;
    String references 
"Chau, T. T. T., Gehlen, M., and Chevallier, F.: A seamless ensemble-based reconstruction of surface ocean pCO2 and air–sea CO2 fluxes over the global coastal and open oceans, Biogeosciences, 19, 1087–1109, https://doi.org/10.5194/bg-19-1087-2022, 2022. 
 Chau, T. T. T., Gehlen, M., Metzl N., and Chevallier, F.: CMEMS-LSCE: A global 0.25-degree, monthly reconstruction of the surface ocean carbonate system, Earth System Data Dissc., DOI: 10.5194/essd-2023-146, 2023.";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -88.125;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "MULTIOBS Surface carbon fields";
    String time_coverage_end "2023-12-15T00:00:00Z";
    String time_coverage_start "1985-01-15T00:00:00Z";
    String title "Surface ocean carbon fields";
    Float64 Westernmost_Easting 0.125;
  }
}

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Data Access Protocol (DAP) (external link)

and its projection 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.

(easy) You can get data by using the dataset's Data Access Form. It makes the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.

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