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| Row Type | Variable Name | Attribute Name | Data Type | Value |
|---|---|---|---|---|
| attribute | NC_GLOBAL | cdm_data_type | String | Grid |
| attribute | NC_GLOBAL | comment | String | This is science quality data. |
| attribute | NC_GLOBAL | Conventions | String | CF-1.6, COARDS, ACDD-1.3 |
| attribute | NC_GLOBAL | creator_email | String | coastwatch.info at noaa.gov |
| attribute | NC_GLOBAL | creator_name | String | NOAA CoastWatch |
| attribute | NC_GLOBAL | creator_type | String | institution |
| attribute | NC_GLOBAL | creator_url | String | https://coastwatch.noaa.gov
|
| attribute | NC_GLOBAL | Easternmost_Easting | double | 179.98125 |
| attribute | NC_GLOBAL | geospatial_lat_max | double | 89.75625 |
| attribute | NC_GLOBAL | geospatial_lat_min | double | -89.75625 |
| attribute | NC_GLOBAL | geospatial_lat_resolution | double | 0.0375 |
| attribute | NC_GLOBAL | geospatial_lat_units | String | degrees_north |
| attribute | NC_GLOBAL | geospatial_lon_max | double | 179.98125 |
| attribute | NC_GLOBAL | geospatial_lon_min | double | -179.98125 |
| attribute | NC_GLOBAL | geospatial_lon_resolution | double | 0.0375 |
| attribute | NC_GLOBAL | geospatial_lon_units | String | degrees_east |
| attribute | NC_GLOBAL | geospatial_vertical_max | double | 0.0 |
| attribute | NC_GLOBAL | geospatial_vertical_min | double | 0.0 |
| attribute | NC_GLOBAL | geospatial_vertical_positive | String | up |
| attribute | NC_GLOBAL | geospatial_vertical_units | String | m |
| attribute | NC_GLOBAL | grid_mapping_name | String | latitude_longitude |
| attribute | NC_GLOBAL | history | String | /data/data369/hgu/v224/bin/l3mapgen par=/data/data652/coastwatch/oc/L3/scripts/bin/../config/l3mapgen_par_kd_490 ifile=/data/data652/coastwatch/oc/L3/scripts/bin/../temp/Config_bmw/infile_2km_G.nc ofile=/data/data369/viirs/L3/2025/04/30/V2025120_D1_WW00_kd_490.nc Fri May 9 19:16:08 2025\n: /data/data652/coastwatch/oc/L3/scripts/bin/l3cnvtr -r 4 /data/data369/viirs/L3/2025/04/30/V2025120_D1_WW00_kd_490.nc /data/aftp/socd1/mecb/coastwatch/viirs/science/L3/global/kd/daily/WW00/V2025120_D1_WW00_kd490.nc |
| attribute | NC_GLOBAL | id | String | noaacwNPPVIIRSSQkd490Daily |
| attribute | NC_GLOBAL | identifier_product_doi | String | https://dx.doi.org
|
| attribute | NC_GLOBAL | identifier_product_doi_authority | String | https://dx.doi.org
|
| attribute | NC_GLOBAL | infoUrl | String | https://coastwatch.noaa.gov/cw/satellite-data-products/ocean-color/science-quality/viirs-snpp.html
|
| attribute | NC_GLOBAL | institution | String | NOAA NESDIS CoastWatch |
| attribute | NC_GLOBAL | instrument | String | VIIRS |
| attribute | NC_GLOBAL | keywords | String | algorithm, altitude, attenuation, chemistry, chlorophyll, coefficient, color, daily, data, diffuse, diffuse_attenuation_coefficient_of_downwelling_radiative_flux_in_sea_water, downwelling, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, flux, heat, heat flux, image, imager, imager/radiometer, imaging, infrared, kd2, kd_490, L3, latitude, level, level-3, longitude, mapped, national, npp, ocean, oceans, Oceans > Ocean Optics > Ocean Color, optics, orbiting, partnership, polar, polar-orbiting, radiative, radiometer, sea, seawater, smi, standard, star, suite, suite/suomi-npp, suomi, time, VIIRS, viirs, viirs-n, visible, water, ww00 |
| attribute | NC_GLOBAL | keywords_vocabulary | String | GCMD Science Keywords |
| attribute | NC_GLOBAL | l2_flag_names | String | ATMFAIL,LAND,HIGLINT,HILT,HISATZEN,CLOUD,HISOLZEN,LOWLW,CHLFAIL,NAVWARN,CLDSHDSTL,MAXAERITER,CHLWARN,ALGICE,SEAICE,NAVFAIL,FILTER |
| attribute | NC_GLOBAL | license | String | https://science.nasa.gov/earth-science/earth-science-data/data-information-policy/\nThe data may be used and redistributed for free but is not intended\nfor legal use, since it may contain inaccuracies. Neither the data\nContributor, ERD, NOAA, nor the United States Government, nor any\nof their employees or contractors, makes any warranty, express or\nimplied, including warranties of merchantability and fitness for a\nparticular purpose, or assumes any legal liability for the accuracy,\ncompleteness, or usefulness, of this information.
|
| attribute | NC_GLOBAL | map_projection | String | geographic |
| attribute | NC_GLOBAL | measure | String | Mean |
| attribute | NC_GLOBAL | naming_authority | String | gov.noaa.coastwatch |
| attribute | NC_GLOBAL | Northernmost_Northing | double | 89.75625 |
| attribute | NC_GLOBAL | platform | String | Suomi-NPP |
| attribute | NC_GLOBAL | processing_level | String | L3 Mapped |
| attribute | NC_GLOBAL | processing_version | String | Unspecified |
| attribute | NC_GLOBAL | product_name | String | NOAA S-NPP VIIRS ocean color products from CoastWatch |
| attribute | NC_GLOBAL | project | String | Ocean Color Science Team (NOAA/NESDIS/STAR/OCST) |
| attribute | NC_GLOBAL | publisher_email | String | coastwatch.info at noaa.gov |
| attribute | NC_GLOBAL | publisher_name | String | NOAA CoastWatch Central |
| attribute | NC_GLOBAL | publisher_type | String | group |
| attribute | NC_GLOBAL | publisher_url | String | https://coastwatch.noaa.gov/erddap/
|
| attribute | NC_GLOBAL | references | String | Wang, M., S. Son, and L. W. Harding, Jr. (2009), Retrieval of diffuse attenuation coefficient in the Chesapeake Bay and turbid ocean regions for satellite ocean color applications, J. Geoph ys. Res. Oceans, 114, C10011 |
| attribute | NC_GLOBAL | Satellite | String | Suomi-NPP |
| attribute | NC_GLOBAL | Sensor | String | VIIRS |
| attribute | NC_GLOBAL | source | String | Satellite observations from VIIRS ocean color sensor |
| attribute | NC_GLOBAL | sourceUrl | String | (local files) |
| attribute | NC_GLOBAL | Southernmost_Northing | double | -89.75625 |
| attribute | NC_GLOBAL | spatialResolution | String | 4.17 km |
| attribute | NC_GLOBAL | standard_name_vocabulary | String | CF Standard Name Table v29 |
| attribute | NC_GLOBAL | summary | String | Level-3 Standard Mapped Image (SMI), Global, 4km, Kd490, Daily composite data from the Visible and Infrared Imager/Radiometer Suite (VIIRS). These are science quality data with a 15-day latency. The data, processed by the NOAA/STAR Ocean Color Team, are produced from MSL12 v1.2 using OC-SDR v04 and were release by CoastWatch as of 2017-08-07. VIIRS is a multi-disciplinary instrument that flies on the Suomi-NPP (National Polar-orbiting Partnership) satellite and is the successor to MODIS. Suomi-NPP is the initial spacecraft in the JPSS (Joint Polar Satellite Systems) series of spacecraft. JPSS is our Nation's next generation polar-orbiting operational environmental satellite system. JPSS is a collaborative program between NOAA and its acquisition agent NASA. |
| attribute | NC_GLOBAL | temporal_range | String | day |
| attribute | NC_GLOBAL | testOutOfDate | String | now-2days |
| attribute | NC_GLOBAL | time_coverage_end | String | 2025-04-30T12:00:00Z |
| attribute | NC_GLOBAL | time_coverage_resolution | String | PD1 |
| attribute | NC_GLOBAL | time_coverage_start | String | 2012-01-02T12:00:00Z |
| attribute | NC_GLOBAL | title | String | Kd490, NOAA S-NPP VIIRS, Science Quality, Global 4km, Level 3, 2012-present, Daily |
| attribute | NC_GLOBAL | Westernmost_Easting | double | -179.98125 |
| dimension | time | double | nValues=4823, evenlySpaced=false, averageSpacing=1 day 0h 13m 26s | |
| attribute | time | _CoordinateAxisType | String | Time |
| attribute | time | actual_range | double | 1.3255056E9, 1.7460144E9 |
| attribute | time | axis | String | T |
| attribute | time | calendar | String | gregorian |
| attribute | time | coverage_content_type | String | coordinate |
| attribute | time | ioos_category | String | Time |
| attribute | time | long_name | String | Centered Time |
| attribute | time | standard_name | String | time |
| attribute | time | time_origin | String | 01-JAN-1970 00:00:00 |
| attribute | time | units | String | seconds since 1970-01-01T00:00:00Z |
| dimension | altitude | double | nValues=1, onlyValue=0.0 | |
| attribute | altitude | _CoordinateAxisType | String | Height |
| attribute | altitude | _CoordinateZisPositive | String | up |
| attribute | altitude | actual_range | double | 0.0, 0.0 |
| attribute | altitude | axis | String | Z |
| attribute | altitude | coverage_content_type | String | coordinate |
| attribute | altitude | ioos_category | String | Location |
| attribute | altitude | long_name | String | Altitude |
| attribute | altitude | positive | String | up |
| attribute | altitude | standard_name | String | altitude |
| attribute | altitude | units | String | m |
| dimension | latitude | double | nValues=4788, evenlySpaced=true, averageSpacing=-0.0375 | |
| attribute | latitude | _CoordinateAxisType | String | Lat |
| attribute | latitude | actual_range | double | -89.75625, 89.75625 |
| attribute | latitude | axis | String | Y |
| attribute | latitude | comment | String | The latitude values are the centers of the grid cells. |
| attribute | latitude | coverage_content_type | String | coordinate |
| attribute | latitude | ioos_category | String | Location |
| attribute | latitude | long_name | String | Latitude |
| attribute | latitude | standard_name | String | latitude |
| attribute | latitude | units | String | degrees_north |
| attribute | latitude | valid_max | double | 90.0 |
| attribute | latitude | valid_min | double | -90.0 |
| dimension | longitude | double | nValues=9600, evenlySpaced=true, averageSpacing=0.0375 | |
| attribute | longitude | _CoordinateAxisType | String | Lon |
| attribute | longitude | actual_range | double | -179.98125, 179.98125 |
| attribute | longitude | axis | String | X |
| attribute | longitude | comment | String | The longitude values are the centers of the grid cells. |
| attribute | longitude | coverage_content_type | String | coordinate |
| attribute | longitude | ioos_category | String | Location |
| attribute | longitude | long_name | String | Longitude |
| attribute | longitude | standard_name | String | longitude |
| attribute | longitude | units | String | degrees_east |
| attribute | longitude | valid_max | double | 180.0 |
| attribute | longitude | valid_min | double | -180.0 |
| variable | kd_490 | float | time, altitude, latitude, longitude | |
| attribute | kd_490 | _FillValue | float | -6.5534 |
| attribute | kd_490 | cell_methods | String | time:mean(interval:1 day) |
| attribute | kd_490 | colorBarMaximum | double | 4.0 |
| attribute | kd_490 | colorBarMinimum | double | 0.0 |
| attribute | kd_490 | coverage_content_type | String | physicalMeasurement |
| attribute | kd_490 | display_scale | String | log |
| attribute | kd_490 | grid_mapping | String | coord_ref |
| attribute | kd_490 | ioos_category | String | Optical Properties |
| attribute | kd_490 | long_name | String | Diffuse attenuation coefficient at 490 nm, kd2 algorithm |
| attribute | kd_490 | references | String | Wang, M., S. Son, and L. W. Harding, Jr. (2009), Retrieval of diffuse attenuation coefficient in the Chesapeake Bay and turbid ocean regions for satellite ocean color applications, J. Geoph ys. Res. Oceans, 114, C10011 |
| attribute | kd_490 | standard_name | String | diffuse_attenuation_coefficient_of_downwelling_radiative_flux_in_sea_water |
| attribute | kd_490 | units | String | m^-1 |
| attribute | kd_490 | valid_max | float | 6.0 |
| attribute | kd_490 | valid_min | float | 0.01 |