NOAA PolarWatch ERDDAP
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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL cdm_data_type String Grid
attribute NC_GLOBAL contributor_name String NOAA STAR, U.S. National Ice Center
attribute NC_GLOBAL contributor_role String Producer, Publisher, Advisor, Software Developer, Originator
attribute NC_GLOBAL Conventions String CF-1.6, ACCD-1.3, COARDS, ACDD-1.3
attribute NC_GLOBAL creator_email String sean.helfrich@noaa.gov,christopher.jackson@noaa.gov,tyler.ruff@noaa.gov
attribute NC_GLOBAL creator_institution String NOAA/NESDIS/STAR/SOCD
attribute NC_GLOBAL creator_name String NOAA STAR SOCD Water Surface Conditions/SAR Team
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.star.nesdis.noaa.gov/socd/mecb/sar/index.html (external link)
attribute NC_GLOBAL cw_projection String Polar Stereographic
attribute NC_GLOBAL cw_software_name String SAR Operational Product System
attribute NC_GLOBAL cw_software_version String 3
attribute NC_GLOBAL date_created String 2022-12-02T14:00:28Z
attribute NC_GLOBAL frame_count int 418
attribute NC_GLOBAL grid_mapping_false_easting double 0.0
attribute NC_GLOBAL grid_mapping_false_northing double 0.0
attribute NC_GLOBAL grid_mapping_inverse_flattening double 298.257223563
attribute NC_GLOBAL grid_mapping_latitude_of_projection_origin double 90.0
attribute NC_GLOBAL grid_mapping_name String polar_stereographic
attribute NC_GLOBAL grid_mapping_proj4 String +proj=stere +lat_0=90 +lat_ts=60 +lon_0=-45 +k=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs
attribute NC_GLOBAL grid_mapping_semi_major_axis double 6378137.0
attribute NC_GLOBAL grid_mapping_spatial_ref String PROJCS[\"unknown\",GEOGCS[\"unknown\",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\"]]],PROJECTION[\"Polar_Stereographic\"],PARAMETER[\"latitude_of_origin\",60],PARAMETER[\"central_meridian\",-45],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],AXIS[\"Easting\",SOUTH],AXIS[\"Northing\",SOUTH]]
attribute NC_GLOBAL grid_mapping_standard_parallel double 60.0
attribute NC_GLOBAL grid_mapping_straight_vertical_longitude_from_pole double -45.0
attribute NC_GLOBAL grid_mapping_units String m
attribute NC_GLOBAL history String 02 December 2022 14:00Z: NetCDF file generated from file NRCS_Composite_1kmCR_2022335T0000_2022335T2359_N418_4Byte.dat
attribute NC_GLOBAL infoUrl String https://www.star.nesdis.noaa.gov/socd/mecb/sar/index.html (external link)
attribute NC_GLOBAL institution String NOAA/NESDIS/STAR/SOCD
attribute NC_GLOBAL instrument String C-SAR
attribute NC_GLOBAL keywords String active, aperture, arctic, backscatter, backwards, c-sar, coefficient, composite, cross, cryosphere, data, earth, EARTH REMOTE SENSING INSTRUMENTS > ACTIVE REMOTE SENSING > IMAGING RADARS > C-SAR, Earth Science > Cryosphere > Sea Ice > Ice Extent, Earth Science > Spectral/Engineering > Radar > Radar Backscatter, engineering, environmental, extent, geographic, GEOGRAPHIC REGION > ARCTIC, GEOGRAPHIC REGION > NORTHERN HEMISPHERE, GEOGRAPHIC REGION > POLAR, hemisphere, ice, imaging, information, instruments, level, national, nesdis, noaa, normalized, northern, NRCS, polar, radar, radars, region, remote, sar, satellite, scattering, science, sea, section, sensing, service, socd, spectral, star, surface, surface waves, surface_backwards_scattering_coefficient_of_radar_wave, synthetic, time, wave, waves
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String Contains modified Copernicus Sentinel data 2022 (https://sentinel.esa.int/documents/247904/690755/Sentinel_Data_Legal_Notice/). Sentinel data is obtained from https://scihub.copernicus.eu/dhus. RADARSAT Constellation Mission Imagery Copyright Government of Canada 2022. RCM data is obtained from https://www.eodms-sgdot.nrcan-rncan.gc.ca/index-en.html. RADARSAT-2 Data and Products Copyright MDA Geospatial Services Inc. 2022 - All Rights Reserved. RADARSAT is an official mark of the Canadian Space Agency. RADARSAT-2 data is provided by https://mda.space/en/. 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 naming_authority String gov.noaa.ncei
attribute NC_GLOBAL platform String SENTINEL-1A/B,RADARSAT-2,RADARSAT
attribute NC_GLOBAL platform_vocabulary String NASA Global Change Master Directory (GCMD) Keywords, Version 9.0
attribute NC_GLOBAL processing_level String NOAA Level 2
attribute NC_GLOBAL product_version String 1
attribute NC_GLOBAL project String SAR Operational Product System
attribute NC_GLOBAL publisher_institution String NOAA STAR
attribute NC_GLOBAL publisher_name String NOAA STAR
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL publisher_url String https://www.star.nesdis.noaa.gov/ (external link)
attribute NC_GLOBAL references String Synthetic Aperture Radar Marine Users Manual. Ed C.R Jackson and J.R. Apel: NOAA: Washington, DC, USA, 2004. ISBN 0-16-073214-X
attribute NC_GLOBAL source String SENTINEL-1A/1B, RADARSAT-2, and RADARSAT Contellation Mission SAR imagery
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v70
attribute NC_GLOBAL summary String This file contains a composite of Synthetic Aperture Radar (SAR) Normalized Radar Cross Section (NRCS) images covering the Arctic for a period of one day. The files are produced in SAROPS (SAR Operational Product System) by the Water Surface Conditions/Sea Surface Roughness group within the NOAA STAR Satellite Oceanography and Climatology Division. Data from the following C-Band SAR systems are included: Sentinel-1A/B, RADARSAT-2, and RADARSAT Constellation Mission. NRCS values have been calibrated with values given by the SAR data provider. Daily coverage may vary due to limitations in data availability.
attribute NC_GLOBAL testOutOfDate String now-3days
attribute NC_GLOBAL time_coverage_duration String P1D
attribute NC_GLOBAL time_coverage_end String 2022-12-01T23:59:59Z
attribute NC_GLOBAL time_coverage_resolution String P1D
attribute NC_GLOBAL time_coverage_start String 2022-03-05T23:59:59Z
attribute NC_GLOBAL title String Normalized Radar Cross Section, SAR Composite, Near Real-Time, 1km, North Pole, Daily
dimension time double nValues=269, evenlySpaced=false, averageSpacing=1 day 0h 16m 7s
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.646524799E9, 1.669939199E9
attribute time axis String T
attribute time CoordinateAxisType String Time
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 byte nValues=1, onlyValue=0.0
attribute level actual_range byte 0, 0
attribute level axis String Z
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 y float nValues=10998, evenlySpaced=true, averageSpacing=1000.0
attribute y actual_range float -5498550.0, 5498450.0
attribute y axis String Y
attribute y comment String y values are the centers of the grid cells
attribute y ioos_category String Location
attribute y long_name String y coordinate of projection
attribute y standard_name String projection_y_coordinate
attribute y units String m
dimension x float nValues=10998, evenlySpaced=true, averageSpacing=1000.0
attribute x actual_range float -5498550.0, 5498450.0
attribute x axis String X
attribute x comment String x values are the centers of the grid cells
attribute x ioos_category String Location
attribute x long_name String x coordinate of projection
attribute x standard_name String projection_x_coordinate
attribute x units String m
variable NRCS float time, level, y, x
attribute NRCS _FillValue float NaN
attribute NRCS comment String Values of sigma naught (sigma0) in dB
attribute NRCS ioos_category String Unknown
attribute NRCS long_name String Normalized Radar Cross Section
attribute NRCS missing_value float NaN
attribute NRCS short_name String NRCS Sigma0 (dB)
attribute NRCS standard_name String surface_backwards_scattering_coefficient_of_radar_wave
attribute NRCS units String 1

 
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