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Dataset Title:  Kd490, SeaWIFS - 8-Day, 1997-2010. v.2018.0 Subscribe RSS
Institution:  NASA/GSFC OBPG   (Dataset ID: sw_kd490_8d_2018_0)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (Centered Time, UTC) ?      584    8 days 7h 44m 21s (uneven)
  < slider >
 latitude (degrees_north) ?      2160    -0.08333334 (uneven)
  < slider >
 longitude (degrees_east) ?      4320    0.08333333 (uneven)
  < slider >
 
Grid Variables (which always also download all of the dimension variables) 
 Kd_490 (Diffuse attenuation coefficient at 490 nm, KD2 algorithm, m-1) ?

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 8.72856e+8, 1.2920688e+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 -89.95834, 89.95834;
    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 0.04166667, 359.9583;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
    Float32 valid_max 360.0;
    Float32 valid_min 0.0;
  }
  Kd_490 {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum 0.01;
    String colorBarScale "Log";
    String ioos_category "Heat Flux";
    String long_name "Diffuse attenuation coefficient at 490 nm, KD2 algorithm";
    String standard_name "diffuse_attenuation_coefficient_of_downwelling_radiative_flux_in_sea_water";
    String units "m-1";
    Float32 valid_max 6.0;
    Float32 valid_min 0.01;
  }
  NC_GLOBAL {
    String _lastModified "2018-01-31T04:47:12.000Z";
    String _NCProperties "version=1|netcdflibversion=4.4.1.1|hdf5libversion=1.8.18";
    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 "2018-01-31T04:59:29Z";
    Float64 Easternmost_Easting 359.9583;
    Float64 geospatial_lat_max 89.95834;
    Float64 geospatial_lat_min -89.95834;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 359.9583;
    Float64 geospatial_lon_min 0.04166667;
    String geospatial_lon_units "degrees_east";
    String grid_mapping_name "latitude_longitude";
    String history 
"Sat Mar  9 10:55:08 2019: ncatted -O -a sw_point_longitude,global,o,f,0.04166667 S20103452010352.L3m_8D_KD490_Kd_490_9km-0-360.nc
Sat Mar  9 10:55:08 2019: ncatted -O -a geospatial_lon_min,global,o,f,0.0 S20103452010352.L3m_8D_KD490_Kd_490_9km-0-360.nc
Sat Mar  9 10:55:08 2019: ncatted -O -a geospatial_lon_max,global,o,f,360.0 S20103452010352.L3m_8D_KD490_Kd_490_9km-0-360.nc
Sat Mar  9 10:55:08 2019: ncatted -O -a easternmost_longitude,global,o,f,360.0 S20103452010352.L3m_8D_KD490_Kd_490_9km-0-360.nc
Sat Mar  9 10:55:08 2019: ncatted -O -a westernmost_longitude,global,o,f,0.0 S20103452010352.L3m_8D_KD490_Kd_490_9km-0-360.nc
Sat Mar  9 10:55:08 2019: ncatted -O -a valid_max,lon,o,f,360.0 S20103452010352.L3m_8D_KD490_Kd_490_9km-0-360.nc
Sat Mar  9 10:55:08 2019: ncatted -O -a valid_min,lon,o,f,0.0 S20103452010352.L3m_8D_KD490_Kd_490_9km-0-360.nc
Sat Mar  9 10:55:08 2019: ncap2 -O -s where(lon<0) lon=lon+360 S20103452010352.L3m_8D_KD490_Kd_490_9km-0-360.nc S20103452010352.L3m_8D_KD490_Kd_490_9km-0-360.nc
Sat Mar  9 10:55:07 2019: ncks -O --msa_usr_rdr -d lon,0.0,180.0 -d lon,-180.0,0.0 S20103452010352.L3m_8D_KD490_Kd_490_9km.nc S20103452010352.L3m_8D_KD490_Kd_490_9km-0-360.nc
l3mapgen par=S20103452010352.L3m_8D_KD490_Kd_490_9km.nc.param 
2024-04-23T12:03:26Z (local files)
2024-04-23T12:03:26Z https://oceanwatch.pifsc.noaa.gov/erddap/griddap/sw_kd490_8d_2018_0.das";
    String id "S20103452010352.L3b_8D_KD490.nc/L3/S20103452010352.L3b_8D_KD490.nc";
    String identifier_product_doi "10.5067/ORBVIEW-2/SEAWIFS/L3M/KD490/2018";
    String identifier_product_doi_authority "https://dx.doi.org";
    String infoUrl "https://oceandata.sci.gsfc.nasa.gov";
    String institution "NASA/GSFC OBPG";
    String instrument "SeaWiFS";
    String keywords "algorithm, attenuation, biology, center, coefficient, color, data, diffuse, diffuse_attenuation_coefficient_of_downwelling_radiative_flux_in_sea_water, downwelling, field, field-of-view, flight, flux, goddard, group, gsfc, heat, heat flux, image, kd2, Kd_490, L3, level, level-3, mapped, nasa, obpg, ocean, palette, processing, radiative, sea, sea-wide, seawater, seawifs, sensor, smi, space, standard, view, water, wide";
    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";
    String NCO "4.3.7";
    Int32 nco_openmp_thread_number 1;
    Float64 Northernmost_Northing 89.95834;
    String platform "Orbview-2";
    String processing_level "L3 Mapped";
    String processing_version "2018.0";
    String product_name "S20103452010352.L3m_8D_KD490_Kd_490_9km.nc";
    String project "Ocean Biology Processing Group (NASA/GSFC/OBPG)";
    String publisher_email "data@oceancolor.gsfc.nasa.gov";
    String publisher_name "NASA/GSFC/OBPG";
    String publisher_type "group";
    String publisher_url "https://oceandata.sci.gsfc.nasa.gov";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -89.95834;
    String spatialResolution "9.28 km";
    String standard_name_vocabulary "CF Standard Name Table v36";
    String summary "Sea-Wide Field-of-View Sensor (SeaWiFS) - 8-Day Ocean Color. Diffuse attenuation coefficient at 490 nm, KD2 algorithm. 1997 - 2010. spatial resolution = 9.28km";
    String temporal_range "10-hour";
    String time_coverage_end "2010-12-11T12:00:00Z";
    String time_coverage_start "1997-08-29T12:00:00Z";
    String title "Kd490, SeaWIFS - 8-Day, 1997-2010. v.2018.0";
    Float64 Westernmost_Easting 0.04166667;
  }
}

 

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[(2015-06-09T09:00:00Z)][(-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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