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ERDDAP > info > noaa_snpp_kd490_daily

Title Sum-
Institution Dataset ID
 data       graph  M    Kd490, NPP VIIRS - CoastWatch - Daily, 2012-present    ?   F   I   M   background (external link) RSS Subscribe STAR noaa_snpp_kd490_daily

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL _lastModified String 2023-12-03T19:15:49.000Z
attribute NC_GLOBAL cdm_data_type String Grid
attribute NC_GLOBAL Conventions String CF-1.6, COARDS, ACDD-1.3
attribute NC_GLOBAL creator_email String at
attribute NC_GLOBAL creator_name String NOAA CoastWatch
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String (external link)
attribute NC_GLOBAL date_created String 2019-04-05T15:59:00Z
attribute NC_GLOBAL Easternmost_Easting double 359.98125000000005
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 359.98125000000005
attribute NC_GLOBAL geospatial_lon_min double 0.01875000000001137
attribute NC_GLOBAL geospatial_lon_resolution double 0.037500000000000006
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 Mon Dec 4 07:50:49 2023: ncatted -O -a sw_point_longitude,global,o,f,0.01875
Mon Dec 4 07:50:49 2023: ncatted -O -a geospatial_lon_min,global,o,f,0.0
Mon Dec 4 07:50:49 2023: ncatted -O -a geospatial_lon_max,global,o,f,360.0
Mon Dec 4 07:50:49 2023: ncatted -O -a easternmost_longitude,global,o,f,360.0
Mon Dec 4 07:50:49 2023: ncatted -O -a westernmost_longitude,global,o,f,0.0
Mon Dec 4 07:50:49 2023: ncatted -O -a valid_max,lon,o,f,360.0
Mon Dec 4 07:50:49 2023: ncatted -O -a valid_min,lon,o,f,0.0
Mon Dec 4 07:50:48 2023: ncap2 -O -s where(lon<0) lon=lon+360
Mon Dec 4 07:50:46 2023: ncks -O --msa_usr_rdr -d lon,0.0,180.0 -d lon,-180.0,0.0
/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/ ofile=/data/data369/viirs/L3/2023/11/24/ Sun Dec 3 19:15:52 2023
: /data/data652/coastwatch/oc/L3/scripts/bin/l3cnvtr -r 4 /data/data369/viirs/L3/2023/11/24/ /data/aftp/socd1/mecb/coastwatch/viirs/science/L3/global/kd/daily/WW00/
attribute NC_GLOBAL id String L3/2km/
attribute NC_GLOBAL identifier_product_doi String (external link)
attribute NC_GLOBAL identifier_product_doi_authority String (external link)
attribute NC_GLOBAL infoUrl String (external link)
attribute NC_GLOBAL institution String STAR
attribute NC_GLOBAL instrument String VIIRS
attribute NC_GLOBAL keywords String algorithm, altitude, attenuation, chemistry, chlorophyll, coefficient, color, data, diffuse, diffuse_attenuation_coefficient_of_downwelling_radiative_flux_in_sea_water, downwelling, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Optics > Ocean Color, flux, heat, heat flux, image, imager, imager/radiometer, imaging, infrared, kd2, kd_490, L3, level, level-3, mapped, national, npp, ocean, oceans, optics, orbiting, partnership, polar, polar-orbiting, radiative, radiometer, sea, seawater, smi, standard, star, suite, suite/suomi-npp, suomi, time, viirs, viirs-n, viirsn, visible, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String These data may be redistributed and used without restriction.
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 NCO String netCDF Operators version 4.7.5 (Homepage =, Code =
attribute NC_GLOBAL nco_openmp_thread_number int 1
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
attribute NC_GLOBAL project String Ocean Color Science Team (NOAA/NESDIS/STAR/OCST)
attribute NC_GLOBAL publisher_email String;
attribute NC_GLOBAL publisher_name String NOAA CoastWatch;National Centers for Environmental Information (NCEI)
attribute NC_GLOBAL publisher_type String group
attribute NC_GLOBAL publisher_url String; (external link)
attribute NC_GLOBAL Satellite String Suomi-NPP
attribute NC_GLOBAL Sensor String VIIRS
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 Visible and Infrared Imager/Radiometer Suite/Suomi-NPP (VIIRSN) produced by NOAA/STAR Ocean Color Team through NOAA Multi-Sensor Level 1 to Level 2 processing system (MSL12) using the Ocean Color improved satellite data record. This is daily Diffuse attenuation coefficient at 490 nm data, 4-km resolution. More info:
attribute NC_GLOBAL temporal_range String day
attribute NC_GLOBAL testOutOfDate String now-36days
attribute NC_GLOBAL time_coverage_end String 2023-11-24T12:00:00Z
attribute NC_GLOBAL time_coverage_start String 2012-01-02T12:00:00Z
attribute NC_GLOBAL title String Kd490, NPP VIIRS - CoastWatch - Daily, 2012-present
attribute NC_GLOBAL Westernmost_Easting double 0.01875000000001137
dimension time   double nValues=4327, evenlySpaced=false, averageSpacing=1 day 0h 6m 0s
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.3255056E9, 1.7008272E9
attribute time axis String T
attribute time calendar String gregorian
attribute time ioos_category String Time
attribute time long_name String 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 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 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=0.037500000000000006
attribute longitude _ChunkSizes uint 9600
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range double 0.01875000000001137, 359.98125000000005
attribute longitude axis String X
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 360.0
attribute longitude valid_min double 0.0
variable kd_490   float time, altitude, latitude, longitude
attribute kd_490 _FillValue float NaN
attribute kd_490 colorBarMaximum double 5.0
attribute kd_490 colorBarMinimum double 0.01
attribute kd_490 colorBarScale String Log
attribute kd_490 grid_mapping String coord_ref
attribute kd_490 ioos_category String Heat Flux
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

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.

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