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| Grid DAP Data | Sub- set | Table DAP Data | Make A Graph | W M S | Source Data Files | Acces- sible
| Title | Sum- mary | FGDC, ISO, Metadata | Back- ground Info | RSS | E | Institution | Dataset ID | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| data | graph | M | files | public | Primary Productivity, VIIRS NOAA20, Science Quality, Global, 4km, 2017-present, (Monthly Composite) |
| F I M | background
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| productivity_viirs_noaa20_monthly |
| Row Type | Variable Name | Attribute Name | Data Type | Value |
|---|---|---|---|---|
| attribute | NC_GLOBAL | acknowledgement | String | This project was supported by the NOAA Office of Satellite Ground Services to CoastWatch West Coast Node via NOAA SWFSC. |
| attribute | NC_GLOBAL | cdm_data_type | String | Grid |
| attribute | NC_GLOBAL | Conventions | String | CF-1.10, ACDD-1.3, COARDS |
| attribute | NC_GLOBAL | creator_email | String | coastwatch.info at noaa.gov |
| attribute | NC_GLOBAL | creator_name | String | NOAA/STAR/NESDIS/CoastWatch/WestCoastNode |
| attribute | NC_GLOBAL | creator_url | String | https://coastwatch.pfeg.noaa.gov/ |
| attribute | NC_GLOBAL | date_created | String | 2025-07-07T13:21:41Z |
| attribute | NC_GLOBAL | Easternmost_Easting | double | 179.9792 |
| attribute | NC_GLOBAL | easternmost_longitude | float | 180.0 |
| attribute | NC_GLOBAL | geospatial_lat_max | double | 89.97916 |
| attribute | NC_GLOBAL | geospatial_lat_min | double | -89.97917 |
| attribute | NC_GLOBAL | geospatial_lat_units | String | degrees_north |
| attribute | NC_GLOBAL | geospatial_lon_max | double | 179.9792 |
| attribute | NC_GLOBAL | geospatial_lon_min | double | -179.9792 |
| attribute | NC_GLOBAL | geospatial_lon_units | String | degrees_east |
| attribute | NC_GLOBAL | history | String | Chlorophyll a, PAR, and SST satellite data from VIIRS NOAA-20 were applied to the equation of Behrenfeld and Falkowski, 1997 to make daily composite files. The monthly file are means of the daily files. |
| attribute | NC_GLOBAL | id | String | productivity_noaa20_mday |
| attribute | NC_GLOBAL | infoUrl | String | coastwatch-wcn.github.io/primary-productivity |
| attribute | NC_GLOBAL | institution | String | NOAA CoastWatch West Coast Node |
| attribute | NC_GLOBAL | instrument | String | VIIRS |
| attribute | NC_GLOBAL | keywords | String | 2017-present, 2018-present, 4km, active, air, available, biosphere, carbon, chemistry, chla, chlor_a, chlorophyll, chlorophyll-a, coast, coastwatch, color, composite, concentration, data, day, downwelling, dynamics, earth, Earth Science > Biosphere > Ecological Dynamics > Ecosystem Functions > Primary Production, Earth Science > Biosphere > Vegetation > Carbon, Earth Science > Biosphere > Vegetation > Photosynthetically Active Radiation, Earth Science > Oceans > Ocean Chemistry > Carbon, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Chemistry > Pigments > Chlorophyll, Earth Science > Oceans > Ocean Optics > Photosynthetically Available Radiation, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, ecological, ecosystem, flux, functions, global, image, imager, imager/radiometer, imaging, infrared, latitude, longitude, mapped, mass, mass_concentration_of_chlorophyll_in_sea_water, net, net_primary_productivity_of_carbon, noaa, noaa-20, noaa20, node, ocean, ocean color, oceans, optics, par, photon, photosynthetic, photosynthetically, pigments, present, primary, production, productivity, quality, radiation, radiometer, science, science quality, sea, sea_surface_temperature, seawater, smi, sst, standard, suite, surface, surface_downwelling_photosynthetic_photon_flux_in_air, temperature, time, vegetation, viirs, visible, water, west, west coast node |
| attribute | NC_GLOBAL | keywords_vocabulary | String | NASA Global Change Master Directory (GCMD) Science Keywords |
| attribute | NC_GLOBAL | license | String | 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. |
| attribute | NC_GLOBAL | map_projection | String | Equidistant Cylindrical |
| attribute | NC_GLOBAL | naming_authority | String | griddap/erddap/gov.noaa.pfeg.coastwatch |
| attribute | NC_GLOBAL | northernmost_latitude | float | 90.0 |
| attribute | NC_GLOBAL | Northernmost_Northing | double | 89.97916 |
| attribute | NC_GLOBAL | platform | String | NOAA-20 |
| attribute | NC_GLOBAL | processing_level | String | L3 Mapped |
| attribute | NC_GLOBAL | product_name | String | VIIRS NOAA-20 Primary Productivity |
| attribute | NC_GLOBAL | project | String | CoastWatch Primary Productivity Project |
| attribute | NC_GLOBAL | publisher_email | String | erd.data at noaa.gov |
| attribute | NC_GLOBAL | publisher_name | String | NOAA/NMFS/SWFSC/ITDS/ERD, NOAA/NESDIS/STAR/CoastWatch/West Coast |
| attribute | NC_GLOBAL | publisher_url | String | https://coastwatch.pfeg.noaa.gov/ |
| attribute | NC_GLOBAL | reference | String | M.J. Behrenfeld and P. G. Falkowski, Photosynthetic rates derived from satellite-based chlorophyll concentration, Limnol. Oceanogr. 42(l), 1997. 1-20 |
| attribute | NC_GLOBAL | source | String | satellite observations from VIIRS NOAA-20 |
| attribute | NC_GLOBAL | sourceUrl | String | (local files) |
| attribute | NC_GLOBAL | southernmost_latitude | float | -90.0 |
| attribute | NC_GLOBAL | Southernmost_Northing | double | -89.97917 |
| attribute | NC_GLOBAL | spatialResolution | String | 4.638312 km |
| attribute | NC_GLOBAL | standard_name_vocabulary | String | CF Standard Name Table v36 |
| attribute | NC_GLOBAL | summary | String | The VIIRS NOAA-20 Primary Productivity product estimates net carbon fixation by phytoplankton in oceanic waters using the algorithm of Behrenfeld and P. G. Falkowski (1997). Data sources used as in the algorithm are chlorophyll a, SST and PAR values from VIIRS NOAA-20. The chlorophyll a, SST, and PAR data used as inputs to the algorithm are included in the dataset. Data are mapped to a NASA 4km Standard Mapped Image. The monthly data are means of the daily composites |
| attribute | NC_GLOBAL | sw_point_latitude | float | -89.97916 |
| attribute | NC_GLOBAL | sw_point_longitude | float | -179.9792 |
| attribute | NC_GLOBAL | temporal_range | String | month |
| attribute | NC_GLOBAL | testOutOfDate | String | now-116days |
| attribute | NC_GLOBAL | time_coverage_end | String | 2025-06-16T07:00:00Z |
| attribute | NC_GLOBAL | time_coverage_resolution | String | P1M |
| attribute | NC_GLOBAL | time_coverage_start | String | 2018-02-16T08:00:00Z |
| attribute | NC_GLOBAL | title | String | Primary Productivity, VIIRS NOAA20, Science Quality, Global, 4km, 2017-present, (Monthly Composite) |
| attribute | NC_GLOBAL | Westernmost_Easting | double | -179.9792 |
| attribute | NC_GLOBAL | westernmost_longitude | float | -180.0 |
| dimension | time | double | nValues=89, evenlySpaced=false, averageSpacing=30 days 10h 4m 46s | |
| attribute | time | _CoordinateAxisType | String | Time |
| attribute | time | actual_range | double | 1.518768E9, 1.7500572E9 |
| 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 | latitude | float | nValues=4320, evenlySpaced=false, averageSpacing=-0.04166666589488307 | |
| attribute | latitude | _CoordinateAxisType | String | Lat |
| attribute | latitude | actual_range | float | -89.97917, 89.97916 |
| attribute | latitude | axis | String | Y |
| 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 | float | 90.0 |
| attribute | latitude | valid_min | float | -90.0 |
| dimension | longitude | float | nValues=8640, evenlySpaced=false, averageSpacing=0.041666674383609215 | |
| attribute | longitude | _CoordinateAxisType | String | Lon |
| attribute | longitude | actual_range | float | -179.9792, 179.9792 |
| attribute | longitude | axis | String | X |
| 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 | float | 180.0 |
| attribute | longitude | valid_min | float | -180.0 |
| variable | productivity | float | time, latitude, longitude | |
| attribute | productivity | _FillValue | float | -999.0 |
| attribute | productivity | cell_methods | String | time:mean |
| attribute | productivity | colorBarMaximum | double | 2000.0 |
| attribute | productivity | colorBarMinimum | double | 20.0 |
| attribute | productivity | colorBarScale | String | Log |
| attribute | productivity | coverage_content_type | String | physicalMeasurement |
| attribute | productivity | ioos_category | String | Productivity |
| attribute | productivity | long_name | String | Net Primary Productivity Of Carbon |
| attribute | productivity | missing_value | float | -999.0 |
| attribute | productivity | standard_name | String | net_primary_productivity_of_carbon |
| attribute | productivity | units | String | mg C m-2 day-1 |
The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.