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 data       graph  M    files  public Chlorophyll-a, Aqua MODIS, NPP, L3SMI, Global, 4km, Science Quality, 2003-present (8 Day
Composite)
   ?   F   I   M   background (external link) RSS Subscribe NASA/GSFC OBPG erdMH1chla8day

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL _lastModified String 2022-06-26T01:58:14.000Z
attribute NC_GLOBAL _NCProperties String version=2,netcdf=4.7.3,hdf5=1.12.0,
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 data at oceancolor.gsfc.nasa.gov
attribute NC_GLOBAL creator_name String NASA/GSFC/OBPG
attribute NC_GLOBAL creator_type String group
attribute NC_GLOBAL creator_url String https://oceandata.sci.gsfc.nasa.gov (external link)
attribute NC_GLOBAL date_created String 2022-06-26T01:58:14.000Z
attribute NC_GLOBAL Easternmost_Easting double 179.9792
attribute NC_GLOBAL geospatial_lat_max double 89.97916
attribute NC_GLOBAL geospatial_lat_min double -89.97917
attribute NC_GLOBAL geospatial_lat_resolution double 0.04166666589488307
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_resolution double 0.041666674383609215
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL history String Files downloaded daily from https://oceandata.sci.gsfc.nasa.gov/MODIS-Aqua/L3SMI to NOAA SWFSC ERD (erd.data@noaa.gov)
ERDDAP adds the time dimension.
Direct read of HDF4 file through CDM library
attribute NC_GLOBAL identifier_product_doi String 10.5067/AQUA/MODIS/L3M/CHL/2018
attribute NC_GLOBAL identifier_product_doi_authority String https://dx.doi.org (external link)
attribute NC_GLOBAL infoUrl String https://coastwatch.pfeg.noaa.gov/infog/MH1_chla_las.html (external link)
attribute NC_GLOBAL institution String NASA/GSFC OBPG
attribute NC_GLOBAL instrument String MODIS
attribute NC_GLOBAL keywords String algorithm, biology, center, chemistry, chlor_a, chlorophyll, color, concentration, concentration_of_chlorophyll_in_sea_water, data, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Optics > Ocean Color, flight, goddard, group, gsfc, image, imaging, L3, level, level-3, mapped, moderate, modis, nasa, obpg, ocean, ocean color, oceans, oci, optics, processing, resolution, sea, seawater, smi, space, spectroradiometer, standard, time, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL l2_flag_names String ATMFAIL,LAND,HILT,HISATZEN,STRAYLIGHT,CLDICE,COCCOLITH,LOWLW,CHLWARN,CHLFAIL,NAVWARN,MAXAERITER,ATMWARN,HISOLZEN,NAVFAIL,FILTER,HIGLINT
attribute NC_GLOBAL license String https://science.nasa.gov/earth-science/earth-science-data/data-information-policy/
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 measure String Mean
attribute NC_GLOBAL naming_authority String gov.noaa.pfeg.coastwatch
attribute NC_GLOBAL Northernmost_Northing double 89.97916
attribute NC_GLOBAL platform String Aqua
attribute NC_GLOBAL processing_level String L3 Mapped
attribute NC_GLOBAL processing_version String 2018.1QL
attribute NC_GLOBAL product_name String A20221532022160.L3m_8D_CHL_chlor_a_4km.nc
attribute NC_GLOBAL project String Ocean Biology Processing Group (NASA/GSFC/OBPG)
attribute NC_GLOBAL publisher_email String erd.data at noaa.gov
attribute NC_GLOBAL publisher_name String NOAA NMFS SWFSC ERD
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL publisher_url String https://www.pfeg.noaa.gov (external link)
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double -89.97917
attribute NC_GLOBAL spatialResolution String 4.64 km
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v70
attribute NC_GLOBAL summary String This dataset has Level 3, Standard Mapped Image, 4km, chlorophyll-a concentration data from NASA's Aqua Spacecraft. Measurements are gathered by the Moderate Resolution Imaging Spectroradiometer (MODIS) carried aboard the spacecraft. This is Science Quality data. This is the August 2015 version of this dataset.
attribute NC_GLOBAL temporal_range String 8-day
attribute NC_GLOBAL testOutOfDate String now-90days
attribute NC_GLOBAL time_coverage_end String 2022-06-06T00:00:00Z
attribute NC_GLOBAL time_coverage_start String 2003-01-05T00:00:00Z
attribute NC_GLOBAL title String Chlorophyll-a, Aqua MODIS, NPP, L3SMI, Global, 4km, Science Quality, 2003-present (8 Day Composite)
attribute NC_GLOBAL Westernmost_Easting double -179.9792
dimension time   double nValues=889, evenlySpaced=false, averageSpacing=7 days 23h 40m 32s
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.0417248E9, 1.6544736E9
attribute time axis String T
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=true, averageSpacing=-0.04166666589488307
attribute latitude _CoordinateAxisType String Lat
attribute latitude actual_range float -89.97917, 89.97916
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 float 90.0
attribute latitude valid_min float -90.0
dimension longitude   float nValues=8640, evenlySpaced=true, averageSpacing=0.041666674383609215
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range float -179.9792, 179.9792
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 float 180.0
attribute longitude valid_min float -180.0
variable chlorophyll   float time, latitude, longitude
attribute chlorophyll _FillValue float NaN
attribute chlorophyll colorBarMaximum double 30.0
attribute chlorophyll colorBarMinimum double 0.03
attribute chlorophyll colorBarScale String Log
attribute chlorophyll ioos_category String Ocean Color
attribute chlorophyll long_name String Mean Chlorophyll a Concentration
attribute chlorophyll references String Hu, C., Lee Z., and Franz, B.A. (2012). Chlorophyll-a algorithms for oligotrophic oceans: A novel approach based on three-band reflectance difference, J. Geophys. Res., 117, C01011, doi:10.1029/2011JC007395.
attribute chlorophyll standard_name String concentration_of_chlorophyll_in_sea_water
attribute chlorophyll units String mg m-3
attribute chlorophyll valid_max float 100.0
attribute chlorophyll valid_min float 0.001

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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