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Dataset Title:  Experimental NRT Global Weekly Cumulative field from NPP VIIRS created from
Daily NPP VIIRS. Data provided by NOAA/NESDIS Center for Satellite Applications
and Research)
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Institution:  USDOC/NOAA/OAR/AOML/PHOD   (Dataset ID: VIIRS_OC_NRT_7D)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (Reference Time, UTC) ?      1554    1 day 1h 35m 30s (uneven)
  < slider >
 latitude (degrees_north) ?      4800    0.0375 (even)
  < slider >
 longitude (degrees_east) ?      9600    0.0375 (even)
  < slider >
Grid Variables (which always also download all of the dimension variables) 
 chlor_a (Chlorophyll Concentration, OC3 Algorithm, 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 1.5780096e+9, 1.721088e+9;
    String axis "T";
    String calendar "Gregorian";
    String CoordinateAxisType "Time";
    String ioos_category "Time";
    String long_name "Reference 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";
    Float64 actual_range -89.98125, 89.98125;
    String axis "Y";
    String CoordinateAxisType "Lat";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -179.98125, 179.98125;
    String axis "X";
    String CoordinateAxisType "Lon";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  chlor_a {
    Float32 _FillValue NaN;
    Float32 actual_range 0.001, 326.967;
    Float32 colorBarMaximum 10.0;
    Float32 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Ocean Color";
    String long_name "Chlorophyll Concentration, OC3 Algorithm";
    String references "NOAA/NESDIS Center for Satellite Applications and Research:";
    String standard_name "concentration_of_chlorophyll_in_sea_water";
    String units "mg m^-3";
    String variable_info "Experimental NRT Global Weekly Cumulative field from NPP VIIRS";
    String cdm_data_type "Grid";
    String comment "Global Weekly Cumulative chlor_a from VIIRS";
    String contact "";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "";
    String creator_name "NOAA/AOML/Atlantic OceanWatch";
    String creator_type "institution";
    String creator_url "";
    String data_source "USDOC/NOAA/OAR/AOML/PHOD";
    Float64 Easternmost_Easting 179.98125;
    Float64 geospatial_lat_max 89.98125;
    Float64 geospatial_lat_min -89.98125;
    Float64 geospatial_lat_resolution 0.0375;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.98125;
    Float64 geospatial_lon_min -179.98125;
    Float64 geospatial_lon_resolution 0.0375;
    String geospatial_lon_units "degrees_east";
    String history 
    String infoUrl "";
    String institution "USDOC/NOAA/OAR/AOML/PHOD";
    String keywords "algorithm, aoml, applications, aqua, atlantic, atmospheric, center, chemistry, chlor_a, chlorophyll, color, commerce, composite, concentration, concentration_of_chlorophyll_in_sea_water, created, data, department, division, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, environmental, experimental, global, imager, imager/radiometer, imaging, information, infrared, laboratory, meteorological, moderate, modis, national, near, near_real_time, nesdis, noaa, npp, nrt, oar, oc3, ocean, ocean color, oceanic, oceanographic, oceanography, oceans, office, orbiting, partnership, phod, physical, polar, polar-orbiting, provided, radiometer, real, research, resolution, satellite, sea, seawater, service, spectroradiometer, states, suite, swath, time, united, unprojected, usdoc, viirs, visible, water";
    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 89.98125;
    String origin "USDOC/NOAA/OAR/AOML/PHOD";
    String source_data "NOAA/NESDIS Center for Satellite Applications and Research";
    String sourceUrl "";
    Float64 Southernmost_Northing -89.98125;
    String spatial_resolution "0.0375 degree";
    String standard_name_vocabulary "CF Standard Name Table v32";
    String summary "Global Weekly chlor_a from Visible and Infrared Imager/Radiometer Suite (VIIRS)";
    String time_coverage_end "2024-07-16T00:00:00Z";
    String time_coverage_start "2020-01-03T00:00:00Z";
    String title "Experimental NRT Global Weekly Cumulative field from NPP VIIRS created from Daily NPP VIIRS. Data provided by NOAA/NESDIS Center for Satellite Applications and Research)";
    Float64 Westernmost_Easting -179.98125;


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{?query}
For example,[(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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