National Oceanic and Atmospheric Administration ERDDAP at NOAA CoastWatch
Easier access to scientific data
NOAA CoastWatch
Central Operations
NOAA CoastWatch OceanWatch PolarWatch

ERDDAP > info > noaacwecnNPPVIIRSSQchlaEastCoastAnnual

Grid
DAP
Data
Sub-
set
Table
DAP
Data
Make
A
Graph
W
M
S
Source
Data
Files
Title Sum-
mary
FGDC,
ISO,
Metadata
Back-
ground
Info
RSS Institution Dataset ID
 data       graph  M    files  Chlorophyll, NOAA S-NPP VIIRS, Science Quality, U.S. East Coast 750m, Level 3, 2012-present,
Annual
   ?   F   I   M   background (external link) RSS
NOAA NESDIS Coast...  ?
noaacwecnNPPVIIRSSQchlaEastCoastAnnual

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
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 ronald.vogel at noaa.gov
attribute NC_GLOBAL creator_name String NOAA CoastWatch East Coast Node
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://eastcoast.coastwatch.noaa.gov (external link)
attribute NC_GLOBAL cw:pass_type String day
attribute NC_GLOBAL cw:polygon_latitude double 46.0659239654323, 46.0659239654323, 46.0659239654323, 46.0659239654323, 46.0659239654323, 40.07622512311245, 34.0865262807926, 28.096827438472747, 22.107128596152897, 22.107128596152897, 22.107128596152897, 22.107128596152897, 22.107128596152897, 28.096827438472747, 34.0865262807926, 40.07622512311245, 46.0659239654323
attribute NC_GLOBAL cw:polygon_longitude double -85.07597103632074, -78.7948064161434, -72.51364179596608, -66.23247717578874, -59.95131255561142, -59.95131255561142, -59.95131255561142, -59.95131255561142, -59.95131255561142, -66.23247717578874, -72.51364179596608, -78.7948064161434, -85.07597103632074, -85.07597103632074, -85.07597103632074, -85.07597103632074, -85.07597103632074
attribute NC_GLOBAL Easternmost_Easting double -59.95131255561142
attribute NC_GLOBAL geospatial_lat_max double 46.0659239654323
attribute NC_GLOBAL geospatial_lat_min double 22.107128596152897
attribute NC_GLOBAL geospatial_lat_resolution double 0.006168587891163594
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -59.95131255561142
attribute NC_GLOBAL geospatial_lon_min double -85.07597103632074
attribute NC_GLOBAL geospatial_lon_resolution double 0.006168587891163593
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://eastcoast.coastwatch.noaa.gov/cw_viirs_chl.php (external link)
attribute NC_GLOBAL institution String NOAA NESDIS CoastWatch East Coast Node
attribute NC_GLOBAL instrument String Visible Infrared Imaging Radiometer Suite (VIIRS)
attribute NC_GLOBAL keywords String chemistry, chl-a, chla, chlor, chlor-a, chlor_a, chlorophyll, chlorophyll-a, color, concentration, data, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Optics > Ocean Color, image, imager, imager/radiometer, L3, level 3, level-3, mapped, ocean, ocean color, oceans, optical, polar-orbiting, radiance, radiometer, remote sensing, s-npp, satellite, sea, seasonal, seawater, snpp, VIIRS, viirs, visible, water, water quality
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, CoastWatch, NOAA, nor the US Government, nor any of their employees or contractors, make 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 Northernmost_Northing double 46.0659239654323
attribute NC_GLOBAL satellite String Suomi National Polar-orbiting Partnership (S-NPP)
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 22.107128596152897
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v29
attribute NC_GLOBAL summary String Annual average chlorophyll-a concentration for the U.S. East Coast from the VIIRS instrument aboard the S-NPP satellite, 2012-present, is produced using the blue-green reflectance ratio empirical approach of O'Reilly et al. (1998), adjusting the algorithm for the VIIRS spectral bands. Specifically, the algorithm is a 3-band algorithm (OC3V) whose inputs are the water-leaving radiance at wavelengths of 443, 486, and 551 nm (NOAA VIIRS ATBD, 2017). Atmospheric correction uses the near-infrared (NIR) approach of Jiang and Wang (2014), referred to as the BMW atmospheric correction. The individual overpasses are composited into daily mean grids (~840m), then the daily mean grids are averaged into annual gridded chlorophyll-a. More info: https://eastcoast.coastwatch.noaa.gov/cw_viirs_chl.php
attribute NC_GLOBAL time_coverage_end String 2020-07-02T06:30:49Z
attribute NC_GLOBAL time_coverage_start String 2012-07-02T21:24:32Z
attribute NC_GLOBAL title String Chlorophyll, NOAA S-NPP VIIRS, Science Quality, U.S. East Coast 750m, Level 3, 2012-present, Annual
attribute NC_GLOBAL Westernmost_Easting double -85.07597103632074
dimension time   double nValues=9, evenlySpaced=false, averageSpacing=365 days 4h 8m 17s
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.34126427241E9, 1.593671449542E9
attribute time axis String T
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 level   double nValues=1, onlyValue=0.0
attribute level actual_range double 0.0, 0.0
attribute level ioos_category String Location
attribute level long_name String Altitude
attribute level positive String up
attribute level standard_name String altitude
attribute level units String m
dimension latitude   double nValues=3885, evenlySpaced=true, averageSpacing=-0.006168587891163594
attribute latitude _CoordinateAxisType String Lat
attribute latitude actual_range double 22.107128596152897, 46.0659239654323
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
dimension longitude   double nValues=4074, evenlySpaced=true, averageSpacing=0.006168587891163593
attribute longitude _CoordinateAxisType String Lon
attribute longitude actual_range double -85.07597103632074, -59.95131255561142
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
variable chlor_a   float time, level, latitude, longitude
attribute chlor_a _ChunkSizes int 1, 1, 512, 512
attribute chlor_a _FillValue float NaN
attribute chlor_a cell_methods String area: mean
attribute chlor_a colorBarMaximum double 65.0
attribute chlor_a colorBarMinimum double 0.01
attribute chlor_a colorBarPalette String Rainbow
attribute chlor_a colorBarScale String Log
attribute chlor_a grid_mapping String coord_ref
attribute chlor_a ioos_category String Ocean Color
attribute chlor_a long_name String Chlorophyll Concentration, Default Algorithm
attribute chlor_a missing_value float NaN
attribute chlor_a standard_name String mass_concentration_of_chlorophyll_a_in_sea_water
attribute chlor_a units String mg m^-3

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.


 

ERDDAP, Version 2.12
Disclaimers

Privacy | Customer Survey | Contact Us
Information Quality FOIA Disclaimer
USA.gov Department of Commerce
National Oceanic & Atmospheric Administration
Center for Satellite Applications and Research
Satellite Oceanography & Climatology Division