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Dataset Title:  MODIS Aqua, Level-3 R2022 NRT, Global, 4km, Particulate Organic Carbon, 2003-
present (1 Day Composite)
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Institution:  NASA/GSFC OBPG   (Dataset ID: erdMPOC1day_R2022NRT)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (Centered Time, UTC) ?      257    1 day 1h 18m 45s (uneven)
  < slider >
 latitude (degrees_north) ?      4320    -0.04166667 (even)
  < slider >
 longitude (degrees_east) ?      8640    0.04166667 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables) 
 poc (Particulate Organic Carbon, D. Stramski, 2007 (443/555 version), mg m-3) ?

File type: (more information)

(Documentation / Bypass this form) ?
 
(Please be patient. It may take a while to get the data.)


 

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.646136e+9, 1.669464e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Centered 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 _FillValue NaN;
    Float32 actual_range -89.97917, 89.97916;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
    Float32 valid_max 90.0;
    Float32 valid_min -90.0;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 _FillValue NaN;
    Float32 actual_range -179.9792, 179.9792;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
    Float32 valid_max 180.0;
    Float32 valid_min -180.0;
  }
  poc {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 1500.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Ocean Color";
    String long_name "Particulate Organic Carbon, D. Stramski, 2007 (443/555 version)";
    String references "Stramski, D., et al. \"Relationships between the surface concentration of particulate organic carbon and optical properties in the eastern South Pacific and eastern Atlantic Oceans.\" Biogeosciences 5.1 (2008): 171-201.";
    String units "mg m-3";
    Float32 valid_max 1000.0;
    Float32 valid_min 0.0;
  }
  NC_GLOBAL {
    String _lastModified "2022-11-26T04:58:57.000Z";
    String cdm_data_type "Grid";
    String Conventions "CF-1.6 ACDD-1.3, COARDS";
    String creator_email "data@oceancolor.gsfc.nasa.gov";
    String creator_name "NASA/GSFC/OBPG";
    String creator_type "group";
    String creator_url "https://oceandata.sci.gsfc.nasa.gov";
    String date_created "2022-11-26T04:58:57.000Z";
    Float64 Easternmost_Easting 179.9792;
    Float64 geospatial_lat_max 89.97916;
    Float64 geospatial_lat_min -89.97917;
    Float64 geospatial_lat_resolution 0.04166666589488307;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.9792;
    Float64 geospatial_lon_min -179.9792;
    Float64 geospatial_lon_resolution 0.041666674383609215;
    String geospatial_lon_units "degrees_east";
    String history 
"Files downloaded daily from https://oceandata.sci.gsfc.nasa.gov/directdataaccess/Level-3%20Mapped/Aqua-MODIS to NOAA SWFSC ERD (erd.data@noaa.gov) ERDDAP adds the time dimension
2022-11-28T12:20:01Z (local files)
2022-11-28T12:20:01Z http://coastwatch.pfeg.noaa.gov/erddap/griddap/erdMPOC1day_R2022NRT.das";
    String id "R2022.0/L3/AQUA_MODIS.20221125.L3b.DAY.POC.NRT.nc";
    String identifier_product_doi "10.5067/AQUA/MODIS/L3M/POC/2022";
    String identifier_product_doi_authority "https://dx.doi.org";
    String infoUrl "https://oceandata.sci.gsfc.nasa.gov";
    String institution "NASA/GSFC OBPG";
    String instrument "MODIS";
    String keywords "443/555, aqua, biology, carbon, center, chemistry, color, data, earth, Earth Science > Oceans > Ocean Chemistry > Organic Carbon, flight, goddard, group, gsfc, image, imaging, L3, level, level-3, mapped, moderate, modis, modisa, nasa, obpg, ocean, ocean color, oceans, organic, particulate, poc, processing, resolution, science, smi, space, spectroradiometer, standard, stramski, version";
    String keywords_vocabulary "GCMD Science Keywords";
    String l2_flag_names "ATMFAIL,LAND,HILT,HISATZEN,STRAYLIGHT,CLDICE,COCCOLITH,LOWLW,CHLWARN,CHLFAIL,NAVWARN,MAXAERITER,ATMWARN,HISOLZEN,NAVFAIL,FILTER,HIGLINT";
    String license "https://science.nasa.gov/earth-science/earth-science-data/data-information-policy/";
    String map_projection "Equidistant Cylindrical";
    String measure "Mean";
    String naming_authority "gov.nasa.gsfc.sci.oceandata";
    Float64 Northernmost_Northing 89.97916;
    String platform "Aqua";
    String processing_level "L3 Mapped";
    String processing_version "R2022.0";
    String product_name "AQUA_MODIS.20221125.L3m.DAY.POC.poc.4km.NRT.nc";
    String project "Ocean Biology Processing Group (NASA/GSFC/OBPG)";
    String publisher_email "erd.data@noaa.gov";
    String publisher_name "NOAA NMFS SWFSC ERD";
    String publisher_type "institution";
    String publisher_url "https://www.pfeg.noaa.gov";
    String source "satellite observations from MODIS-Aqua";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -89.97917;
    String spatialResolution "4.638312 km";
    String standard_name_vocabulary "CF Standard Name Table v36";
    String summary "Moderate Resolution Imaging Spectroradiometer on Aqua (MODISA) Level-3 Standard Mapped Image";
    String temporal_range "day";
    String time_coverage_end "2022-11-26T12:00:00Z";
    String time_coverage_start "2022-03-01T12:00:00Z";
    String title "MODIS Aqua, Level-3 R2022 NRT, Global, 4km, Particulate Organic Carbon, 2003-present (1 Day Composite)";
    Float64 Westernmost_Easting -179.9792;
  }
}

 

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link) 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.

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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