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ERDDAP
Easier access to scientific data |
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Brought to you by NOAA NMFS SWFSC ERD |
| Dataset Title: | VIIRS ocean color and sst calculation by SeaDas; Regridded to Mercator lon/lat projection. Processed at the University of Delaware 
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| Institution: | University of Delaware (Dataset ID: viirs_1km_1day) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Files
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Attributes {
time {
UInt32 _ChunkSizes 1;
String _CoordinateAxisType "Time";
Float64 actual_range 1.325635199e+9, 1.749686399e+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;
String units "m^-1";
}
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;
String units "m^-1";
}
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;
String units "m^-1";
}
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;
String units "m^-1";
}
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;
String units "m^-1";
}
a_745_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 745 nm, QAA algorithm";
Float32 missing_value -999.0;
String units "m^-1";
}
a_862_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 862 nm, QAA algorithm";
Float32 missing_value -999.0;
String units "m^-1";
}
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;
String units "m^-1";
}
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;
String units "m^-1";
}
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;
String units "m^-1";
}
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;
String units "m^-1";
}
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;
String units "sr^-1";
}
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;
String units "sr^-1";
}
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;
String units "sr^-1";
}
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;
String units "sr^-1";
}
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;
String units "sr^-1";
}
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;
String units "sr^-1";
}
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;
String units "sr^-1";
}
ndvi {
UInt32 _ChunkSizes 1, 718, 798;
Float32 _FillValue -999.0;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum -10.0;
String ioos_category "Biology";
String long_name "Normalized Difference Vegetation Index";
Float32 missing_value -999.0;
String standard_name "normalized_difference_vegetation_index";
}
evi {
UInt32 _ChunkSizes 1, 718, 798;
Float32 _FillValue -999.0;
String ioos_category "Biology";
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;
String units "mol m^-3";
}
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;
String units "mg m^-3";
}
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;
}
Kd_490 {
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum -10.0;
String ioos_category "Optical Properties";
}
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 "degree_C";
}
M_WK {
String ioos_category "Unknown";
}
M_WK_G {
String ioos_category "Unknown";
}
NC_GLOBAL {
String cdm_data_type "Grid";
String Conventions "CF-1.10, COARDS, ACDD-1.3";
String createAgency "NASA";
String creator_email "moliver@udel.edu";
String creator_name "Matthew Oliver";
String creator_type "person";
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
2025-09-11T11:50:35Z (local files)
2025-09-11T11:50:35Z http://ocean-data.ceoe.udel.edu/erddap/griddap/viirs_1km_1day.das";
String infoUrl "http://orb.ceoe.udel.edu/";
String institution "University of Delaware";
String keywords "34k+w, 443/555, a_410_qaa, a_443_qaa, a_486_qaa, a_551_qaa, a_671_qaa, a_745_qaa, a_862_qaa, absorption, across, adg_410_qaa, after, algorithm, aph_443_qaa, attenuation, backscattering, balch, bb_551_qaa, beam, biology, biosphere, c_551_qaa, calcite, calculation, carbon, chemistry, chl_oc3, chlorophyll, class_34k_w_owmc, classification, classifications, clustering, coefficient, color, concentration, concentration_of_chlorophyll_in_sea_water, data, delaware, detrital, difference, diffuse, due, earth, Earth Science > Biosphere > Vegetation > Vegetation Index, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, enhanced, evi, gelbstoff, gordon, gradient, imager, imager/radiometer, imaging, index, infrared, irwin, kd2, Kd_490, kmeans, M_WK, M_WK_G, mass, material, means, mercator, merged, ndvi, normalized, normalized_difference_vegetation_index, oc3, ocean, ocean color, oceans, oliver, optical, optical properties, organic, owmc, particulate, phytoplankton, pic, poc, processed, projection, properties, qaa, quality, radiometer, reflectance, regridded, remote, Rrs_410, Rrs_443, Rrs_486, Rrs_551, Rrs_671, Rrs_745, Rrs_862, science, sea, sea_surface_temperature, seadas, seawater, sensing, sst, stramski, strengths, suite, surface, temperature, time, total, university, using, vegetation, version, viirs, visible, wards, 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,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 v70";
String summary "Visible and Infrared Imager/Radiometer Suite (VIIRS) ocean color and sst calculation by SeaDas; Regridded to Mercator lon/lat projection. Processed at the University of Delaware";
String time_coverage_end "2025-06-11T23:59:59Z";
String time_coverage_start "2012-01-03T23:59:59Z";
String title "VIIRS ocean color and sst calculation by SeaDas; Regridded to Mercator lon/lat projection. Processed at the University of Delaware";
String url "http://orb.ceoe.udel.edu/";
Float64 Westernmost_Easting -100.0;
}
}
Data Access Protocol (DAP) and its
projection constraints.
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.