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Dataset Title:  VIIRS Suomi NPP 1-Day 750 m Composite Northwest Atlantic Subscribe RSS
Institution:  University of Delaware   (Dataset ID: VIIRS_NWATL)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      4778    1 day 1h 21m 41s (uneven)
  < slider >
 latitude (degrees_north) ?      4500    0.008 (uneven)
  < slider >
 longitude (degrees_east) ?      5000    0.01 (uneven)
  < slider >
 
Grid Variables (which always also download all of the dimension variables) 
 chl_oc3 (Chlorophyll Concentration, OC3 Algorithm, mg m^-3) ?
 a_410_qaa (Total absorption at 410 nm, QAA algorithm) ?
 a_443_qaa (Total absorption at 443 nm, QAA algorithm) ?
 a_486_qaa (Total absorption at 486 nm, QAA algorithm) ?
 a_551_qaa (Total absorption at 551 nm, QAA algorithm) ?
 a_671_qaa (Total absorption at 671 nm, QAA algorithm) ?
 bb_551_qaa (Total backscattering at 551 nm, QAA algorithm) ?
 aph_443_qaa (Absorption due to phytoplankton at 443 nm, QAA algorithm) ?
 adg_410_qaa (Absorption due to gelbstoff and detrital material at 410 nm, QAA algorithm) ?
 c_551_qaa (Beam attenuation at 551 nm, QAA algorithm) ?
 Rrs_410 (Remote sensing reflectance at 410 nm) ?
 Rrs_443 (Remote sensing reflectance at 443 nm) ?
 Rrs_486 (Remote sensing reflectance at 486 nm) ?
 Rrs_551 (Remote sensing reflectance at 551 nm) ?
 Rrs_671 (Remote sensing reflectance at 671 nm) ?
 Rrs_745 (Remote sensing reflectance at 745 nm) ?
 Rrs_862 (Remote sensing reflectance at 862 nm) ?
 ndvi (Normalized Difference Vegetation Index) ?
 evi (Enhanced Vegetation Index) ?
 pic (Calcite Concentration, Balch and Gordon) ?
 poc (Particulate Organic Carbon, D. Stramski, 2007 (443/555 version)) ?
 sst (Sea Surface Temperature, Celsius) ?
 Kd_490 (Diffuse attenuation coefficient at 490 nm, KD2 algorithm, m^-1) ?
 class_34k_w_owmc (OWMC merged Wards and K_means (34K+W) Classification) ?
 M_WK ?
 M_WK_G ?

File type: (more information)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    UInt32 _ChunkSizes 1;
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.325635199e+9, 1.761782399e+9;
    String axis "T";
    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";
    Float64 actual_range 16.007999420166016, 52.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -100.0, -50.0099983215332;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  chl_oc3 {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String ioos_category "Ocean Color";
    String long_name "Chlorophyll Concentration, OC3 Algorithm";
    Float32 missing_value -999.0;
    String standard_name "concentration_of_chlorophyll_in_sea_water";
    String units "mg m^-3";
  }
  a_410_qaa {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Total absorption at 410 nm, QAA algorithm";
    Float32 missing_value -999.0;
  }
  a_443_qaa {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Total absorption at 443 nm, QAA algorithm";
    Float32 missing_value -999.0;
  }
  a_486_qaa {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Total absorption at 486 nm, QAA algorithm";
    Float32 missing_value -999.0;
  }
  a_551_qaa {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Total absorption at 551 nm, QAA algorithm";
    Float32 missing_value -999.0;
  }
  a_671_qaa {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Total absorption at 671 nm, QAA algorithm";
    Float32 missing_value -999.0;
  }
  bb_551_qaa {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Total backscattering at 551 nm, QAA algorithm";
    Float32 missing_value -999.0;
  }
  aph_443_qaa {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Absorption due to phytoplankton at 443 nm, QAA algorithm";
    Float32 missing_value -999.0;
  }
  adg_410_qaa {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Absorption due to gelbstoff and detrital material at 410 nm, QAA algorithm";
    Float32 missing_value -999.0;
  }
  c_551_qaa {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "Beam attenuation at 551 nm, QAA algorithm";
    Float32 missing_value -999.0;
  }
  Rrs_410 {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Optical Properties";
    String long_name "Remote sensing reflectance at 410 nm";
    Float32 missing_value -999.0;
  }
  Rrs_443 {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Optical Properties";
    String long_name "Remote sensing reflectance at 443 nm";
    Float32 missing_value -999.0;
  }
  Rrs_486 {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Optical Properties";
    String long_name "Remote sensing reflectance at 486 nm";
    Float32 missing_value -999.0;
  }
  Rrs_551 {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Optical Properties";
    String long_name "Remote sensing reflectance at 551 nm";
    Float32 missing_value -999.0;
  }
  Rrs_671 {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Optical Properties";
    String long_name "Remote sensing reflectance at 671 nm";
    Float32 missing_value -999.0;
  }
  Rrs_745 {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Optical Properties";
    String long_name "Remote sensing reflectance at 745 nm";
    Float32 missing_value -999.0;
  }
  Rrs_862 {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Optical Properties";
    String long_name "Remote sensing reflectance at 862 nm";
    Float32 missing_value -999.0;
  }
  ndvi {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Unknown";
    String long_name "Normalized Difference Vegetation Index";
    Float32 missing_value -999.0;
  }
  evi {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Unknown";
    String long_name "Enhanced Vegetation Index";
    Float32 missing_value -999.0;
  }
  pic {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Ocean Color";
    String long_name "Calcite Concentration, Balch and Gordon";
    Float32 missing_value -999.0;
  }
  poc {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Ocean Color";
    String long_name "Particulate Organic Carbon, D. Stramski, 2007 (443/555 version)";
    Float32 missing_value -999.0;
  }
  sst {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Temperature";
    String long_name "Sea Surface Temperature";
    String standard_name "sea_surface_temperature";
    String units "Celsius";
  }
  Kd_490 {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum -10.0;
    String ioos_category "Optical Properties";
    String long_name "Diffuse attenuation coefficient at 490 nm, KD2 algorithm";
    Float32 missing_value -999.0;
    String units "m^-1";
  }
  class_34k_w_owmc {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Unknown";
    String long_name "OWMC merged Wards and K_means (34K+W) Classification";
    Float32 missing_value -999.0;
  }
  M_WK {
    UInt32 _ChunkSizes 1, 718, 798;
    Int32 _FillValue -999;
    String ioos_category "Unknown";
    String long_name "Water Mass Classifications using Wards and Kmeans clustering after Oliver and Irwin 2008";
    Int32 missing_value -999;
  }
  M_WK_G {
    UInt32 _ChunkSizes 1, 718, 798;
    Float32 _FillValue -999.0;
    String ioos_category "Unknown";
    String long_name "Gradient Strengths Across Water Mass Classifications using Wards and Kmeans clustering after Oliver and Irwin 2008";
    Float32 missing_value -999.0;
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String createAgency "NASA";
    String creator_email "moliver@udel.edu";
    String creator_name "Matthew Oliver";
    String creator_url "https://www.udel.edu/";
    Float64 Easternmost_Easting -50.0099983215332;
    Float64 geospatial_lat_max 52.0;
    Float64 geospatial_lat_min 16.007999420166016;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -50.0099983215332;
    Float64 geospatial_lon_min -100.0;
    String geospatial_lon_units "degrees_east";
    String groundstation "University of Delaware, Newark, Center for Remote Sensing";
    String history 
"satellite observation NASA MODIS-Aqua instrument
2025-10-31T06:50:48Z (local files)
2025-10-31T06:50:48Z http://basin.ceoe.udel.edu/erddap/griddap/VIIRS_NWATL.das";
    String infoUrl "https://jointmission.gsfc.nasa.gov/viirs.html/";
    String institution "University of Delaware";
    String keywords "a_410_qaa, a_443_qaa, a_486_qaa, a_551_qaa, a_671_qaa, adg_410_qaa, algorithm, aph_443_qaa, bb_551_qaa, c_551_qaa, calculation, chemistry, chl_oc3, chlorophyll, color, concentration, concentration_of_chlorophyll_in_sea_water, data, delaware, difference, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, evi, imager, imager/radiometer, imaging, index, infrared, ndvi, normalized, oc3, ocean, ocean color, oceans, optical, optical properties, pic, poc, properties, quality, radiometer, regridded, Rrs_410, Rrs_443, Rrs_486, Rrs_551, Rrs_671, Rrs_745, Rrs_862, sea, sea_surface_temperature, seadas, seawater, sst, suite, surface, temperature, time, university, vegetation, 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 52.0;
    String product_list "chl_oc3,a_410_qaa,a_443_qaa,a_486_qaa,a_551_qaa,a_671_qaa,a_745_qaa,a_862_qaa,bb_551_qaa,aph_443_qaa,adg_410_qaa,c_551_qaa,Rrs_410,Rrs_443,Rrs_486,Rrs_551,Rrs_671,Rrs_745,Rrs_862,ndvi,evi,pic,poc,class_34k_w_owmc,Kd_490,sst";
    String software "SeaDas";
    String source "satellite observation NASA MODIS-Aqua instrument";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 16.007999420166016;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "Visible and Infrared Imager/Radiometer Suite (VIIRS) 1-Day ocean color and sst calculation by SeaDas; Regridded to Mercator lon/lat projection. Processed at the University of Delaware. Computed for the Mid-Atlantic Regional Association Coastal Ocean Observing System.";
    String time_coverage_end "2025-10-29T23:59:59Z";
    String time_coverage_start "2012-01-03T23:59:59Z";
    String title "VIIRS Suomi NPP 1-Day 750 m Composite Northwest Atlantic";
    String url "http://orb.ceoe.udel.edu/";
    Float64 Westernmost_Easting -100.0;
  }
}

 

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