NOAA PolarWatch ERDDAP
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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL _NCProperties String version=2,netcdf=4.8.1,hdf5=1.10.6
attribute NC_GLOBAL cdm_data_type String Grid
attribute NC_GLOBAL cdr_program String NOAA National Environmental Satellite, Data and Information Service
attribute NC_GLOBAL cdr_variable String fcdr_sea_ice_concentration_percentage
attribute NC_GLOBAL Conventions String CF-1.6, ACDD-1.3, NOAA CDR v1.0, GDS v2.0, COARDS
attribute NC_GLOBAL creator_email String rdworak at ssec.wisc.edu
attribute NC_GLOBAL creator_name String Richard J. Dworak
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String stratus.ssec.wisc.edu
attribute NC_GLOBAL date_created String 2025-04-18
attribute NC_GLOBAL defaultGraphQuery String IceConc[(last)]&.draw=surface
attribute NC_GLOBAL grid_mapping_comment String Data is stored in 1 km EASE2-Grid. Refer to https://nsidc.org/data/user-resources/help-center/guide-ease-grids (external link)
attribute NC_GLOBAL grid_mapping_epsg_code short 6932
attribute NC_GLOBAL grid_mapping_latitude_of_projection_origin String -90.0f
attribute NC_GLOBAL grid_mapping_longitude_of_projection_origin String 0.0f
attribute NC_GLOBAL grid_mapping_name String lambert_azimuthal_equal_area
attribute NC_GLOBAL grid_mapping_proj4text String +proj=laea +lat_0=-90 +lon_0=0 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs +type=crs
attribute NC_GLOBAL grid_mapping_spatial_ref String PROJCS[\"WGS 84 / NSIDC EASE-Grid 2.0 South\",GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4326\"]],PROJECTION[\"Lambert_Azimuthal_Equal_Area\"],PARAMETER[\"latitude_of_center\",-90],PARAMETER[\"longitude_of_center\",0],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],AUTHORITY[\"EPSG\",\"6932\"]]
attribute NC_GLOBAL grid_mapping_srid String urn:ogc:def:crs:EPSG::6932
attribute NC_GLOBAL grid_mappingearth_radius String 6371228.0f
attribute NC_GLOBAL grid_mappingfalse_easting String 0.0f
attribute NC_GLOBAL grid_mappingfalse_northing String 0.0f
attribute NC_GLOBAL id String Polar-AMSR2VIIRSBLEND_j01_v01r00_Shem
attribute NC_GLOBAL infoUrl String https://www.mdpi.com/2072-4292/13/15/2982 (external link)
attribute NC_GLOBAL infourl String https://www.ospo.noaa.gov/Products/Suites/files/atbd/ATBD_IceSurfaceTemperatureIceConcentration_v1.0.pdf (external link) and https://ntrs.nasa.gov/api/citations/20140017491/downloads/20140017491.pdf (external link)
attribute NC_GLOBAL institution String Cooperative Institute for Meteorological Studies, University of Wisconsin at Madison
attribute NC_GLOBAL keywords String amsr2, antarctic, blended, cimss, cols, concentration, cooperative, cryosphere, data, distribution, earth, Earth Science > Blended Product > Amsr2 > Viirs, Earth Science > Cryosphere > Sea Ice > Sea Ice Concentration, ice, ice distribution, IceConc, imager, imager/radiometer, imaging, infrared, institute, madison, meteorological, product, radiometer, rows, science, sea, sea_ice_concentration, studies, suite, time, university, uw-cimss, viirs, visible, wisconsin
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 metadata_link String https://www.star.nesdis.noaa.gov/jpss/documents/ATBD/ATBD_EPS_Cloud_Mask_v1.2.pdf (external link)
attribute NC_GLOBAL nameing_authority String ssec.wisc.edu
attribute NC_GLOBAL platform String NOAA21 and GCOM-W1
attribute NC_GLOBAL processing_level String L3 Mapped
attribute NC_GLOBAL product_version String v1.0
attribute NC_GLOBAL proj4_string String WGS84
attribute NC_GLOBAL proj_crs_code String EPSG:6932
attribute NC_GLOBAL references String https://www.mdpi.com/2072-4292/13/15/2982 (external link)
attribute NC_GLOBAL sensor String Visible Infrared Imaging Radiometer Suite (VIIRS) and The Advanced Microwave Scanning Radiometer 2 (AMSR2)
attribute NC_GLOBAL source String AMSR2 and VIIRS
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL spatial_resolution String 1 km
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v36
attribute NC_GLOBAL summary String This is a Blended Sea Ice Concentration product that combines clear-sky Visible and Infrared Imager/Radiometer Suite (VIIRS) ice concentration from NOAA-20 with that comes from the AMSR2 NASA Team-2 10 km product. The output is remapped into 1-km EASE2 grid cells with a nominal resolution of at least 5-km. The NDE cloud mask is used to screen out cloudy VIIRS pixels. When the cloud mask for a data point is determined to be confidently clear, the output concentration in the blended product is 100% VIIRS. Otherwise, the Best Linear Unbiased Estimator equation is used to determine the output concentration (see https://www.sciencedirect.com/topics/mathematics/linear-unbiased-estimator#:~:text=Under%20assumptions%20V%20and%20VI (external link),(Gauss%E2%80%93Markov%20theorem for more information on method).
attribute NC_GLOBAL time_coverage_duration String P1D
attribute NC_GLOBAL time_coverage_end String 2025-04-17T12:00:00Z
attribute NC_GLOBAL time_coverage_resolution String P1D
attribute NC_GLOBAL time_coverage_start String 2023-12-19T12:00:00Z
attribute NC_GLOBAL title String Sea Ice Concentration, AMSR2/VIIRS, Antarctic, 1km, Blended, UW-CIMSS, 2023-present, Daily
dimension time double nValues=448, evenlySpaced=false, averageSpacing=1 day 2h 2m 25s
attribute time _ChunkSizes uint 524288
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.7029872E9, 1.7448912E9
attribute time axis String T
attribute time coverage_content_type String coordinate
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 cols int nValues=8024, evenlySpaced=true, averageSpacing=1000.0
attribute cols _ChunkSizes uint 8024
attribute cols _CoordinateAxisType String GeoX
attribute cols actual_range int -4012000, 4011000
attribute cols axis String X
attribute cols ioos_category String Location
attribute cols long_name String Projection Grid X Coordinates
attribute cols standard_name String projection_x_coordinate
attribute cols units String meters
dimension rows int nValues=8024, evenlySpaced=true, averageSpacing=1000.0
attribute rows _ChunkSizes uint 8024
attribute rows _CoordinateAxisType String GeoY
attribute rows actual_range int -4012000, 4011000
attribute rows axis String Y
attribute rows ioos_category String Location
attribute rows long_name String Projection Grid Y Coordinates
attribute rows standard_name String projection_y_coordinate
attribute rows units String meters
variable IceConc short time, cols, rows
attribute IceConc _ChunkSizes uint 1, 1003, 1003
attribute IceConc _FillValue short 999
attribute IceConc colorBarMaximum double 100.0
attribute IceConc colorBarMinimum double 0.0
attribute IceConc colorBarPalette String KT_ice
attribute IceConc comment String UW-CIMSS Experimental Blended Sea Ice Concentration derived from AMSR2 (NASA TEAM-2) and VIIRS (NDE)
attribute IceConc coordinates String time rows cols
attribute IceConc coverage_content_type String physicalMeasurement
attribute IceConc grid_mapping String crs
attribute IceConc ioos_category String Ice Distribution
attribute IceConc long_name String Sea Ice Concentration, Blended AMSR2 and VIIRS
attribute IceConc standard_name String sea_ice_concentration
attribute IceConc units String percent
attribute IceConc valid_range short 0, 100

 
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