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ERDDAP > info > noaacwecnNPPVIIRSSQchlaEastCoast7dayClimatolMinus2019

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 data       graph  M    Chlorophyll, NOAA S-NPP VIIRS, Science Quality, U.S. East Coast 750m, Level 3, 7-day Median
Climatology 2012-2022 (minus 2019)
   ?   F   I   M   background (external link) RSS
NOAA NESDIS Coast...  ?
noaacwecnNPPVIIRSSQchlaEastCoast7dayClimatolMinus2019

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 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 CC0-1.0. 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 Climatological 7-day median chlorophyll-a concentration, 2012-2022, for the U.S. East Coast, from the VIIRS instrument aboard the S-NPP satellite, 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 grids (~840m) using a pixel closest-to-nadir approach. A 7-day median time series is calculated from the daily grids for all years 2012-2022, and then a climatology is calculated for each 7-day period (median), i.e. there are 52 7-day periods each representing a 2012-2022 chlorophyll median for that period. The year 2019 is not included because of high outlier chlorophyll values due to extreme freshwater flow conditions that year. More info: https://eastcoast.coastwatch.noaa.gov/cw_viirs_chl.php
attribute NC_GLOBAL title String Chlorophyll, NOAA S-NPP VIIRS, Science Quality, U.S. East Coast 750m, Level 3, 7-day Median Climatology 2012-2022 (minus 2019)
attribute NC_GLOBAL Westernmost_Easting double -85.07597103632074
dimension sevenDayPeriodOfYear   double nValues=52, evenlySpaced=true, averageSpacing=1.0
attribute sevenDayPeriodOfYear _ChunkSizes uint 1
attribute sevenDayPeriodOfYear actual_range double 1.0, 52.0
attribute sevenDayPeriodOfYear comment String Consecutive 7-day periods of the year. For example, a value of 1 represents days 1-7 of the year.
attribute sevenDayPeriodOfYear ioos_category String Time
attribute sevenDayPeriodOfYear long_name String 7-Day Period of Year
attribute sevenDayPeriodOfYear standard_name String time
attribute sevenDayPeriodOfYear units String count
dimension level   double nValues=1, onlyValue=0.0
attribute level _ChunkSizes uint 1
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 _ChunkSizes uint 3885
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 _ChunkSizes uint 4074
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 sevenDayPeriodOfYear, level, latitude, longitude
attribute chlor_a _ChunkSizes uint 1, 1, 512, 512
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 Climatological 7-day Median Chl, 2012-2022
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.


 

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