HDF5 file, superblock version 0
group /
	attribute Conventions = "CF-1.6, ACCD-1.3"
	attribute cdm_data_type = "Grid"
	attribute contributor_name = "NOAA STAR, U.S. National Ice Center"
	attribute contributor_role = "Producer, Publisher, Advisor, Software Developer, Originator"
	attribute creator_email = "sean.helfrich@noaa.gov,christopher.jackson@noaa.gov,tyler.ruff@noaa.gov"
	attribute creator_institution = "NOAA/NESDIS/STAR/SOCD"
	attribute creator_name = "NOAA STAR SOCD Water Surface Conditions/SAR Team"
	attribute creator_type = "Institution"
	attribute creator_url = "https://www.star.nesdis.noaa.gov/socd/mecb/sar/index.html"
	attribute cw:cwhdf_version = "3.4"
	attribute cw:et_affine = 0.0, 1000.0, 1000.0, 0.0, -5499050.0, -5499050.0
	attribute cw:gctp_datum = 12
	attribute cw:gctp_parm = 0.0, 0.0, 0.0, 0.0, -45000000.0, 60000000.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0
	attribute cw:gctp_sys = 6
	attribute cw:gctp_zone = 0
	attribute cw:pass_date = 19460
	attribute cw:projection = "Polar Stereographic"
	attribute cw:software_name = "SAR Operational Product System"
	attribute cw:software_version = "3"
	attribute cw:start_time = 0.0
	attribute cw:temporal_extent = 86399.0
	attribute date_created = "2023-04-14T14:00:29Z"
	attribute frame_count = 390
	attribute geospatial_lat_max = 90.0
	attribute geospatial_lat_min = 0.0
	attribute geospatial_lat_resolution = "1 km"
	attribute geospatial_lat_units = "degrees_north"
	attribute geospatial_lon_max = 180.0
	attribute geospatial_lon_min = -180.0
	attribute geospatial_lon_resolution = "1 km"
	attribute geospatial_lon_units = "degrees_east"
	attribute history = "14 April 2023 14:00Z: NetCDF file generated from file NRCS_Composite_1kmCR_2023103T0000_2023103T2359_N390_4Byte.dat"
	attribute institution = "NOAA/NESDIS/STAR/SOCD"
	attribute instrument = "C-SAR"
	attribute keywords = "EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE EXTENT, GEOGRAPHIC REGION > ARCTIC, GEOGRAPHIC REGION > POLAR, GEOGRAPHIC REGION > NORTHERN HEMISPHERE, EARTH REMOTE SENSING INSTRUMENTS > ACTIVE REMOTE SENSING > IMAGING RADARS > C-SAR"
	attribute keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Keywords, Version 9.0"
	attribute license = "Contains modified Copernicus Sentinel data 2023 (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 2023. 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. 2023 - 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 naming_authority = "gov.noaa.ncei"
	attribute ncei_template_version = "NCEI_NetCDF_Grid_Template_v2.0"
	attribute platform = "SENTINEL-1A/B,RADARSAT-2,RADARSAT"
	attribute platform_vocabulary = "NASA Global Change Master Directory (GCMD) Keywords, Version 9.0"
	attribute processing_level = "NOAA Level 2"
	attribute product_version = "1"
	attribute project = "SAR Operational Product System"
	attribute publisher_institution = "NOAA STAR"
	attribute publisher_name = "NOAA STAR"
	attribute publisher_type = "Institution"
	attribute publisher_url = "https://www.star.nesdis.noaa.gov/"
	attribute references = "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 source = "SENTINEL-1A/1B, RADARSAT-2, and RADARSAT Contellation Mission SAR imagery"
	attribute standard_name_vocabulary = "CF Standard Name Table (Version 72, 10 March 2020)"
	attribute summary = "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 time_coverage_duration = "P1D"
	attribute time_coverage_end = "2023-04-13T23:59:59Z"
	attribute time_coverage_resolution = "P1D"
	attribute time_coverage_start = "2023-04-13T00:00:00Z"
	attribute title = "SAR Normalized Radar Cross Section Arctic Composite"
dataset /NRCS: float32, shape (1, 1, 10998, 10998)
	attribute _FillValue = -99.0
	attribute comment = "Values of sigma naught (sigma0) in dB"
	attribute grid_mapping = "projection"
	attribute long_name = "Normalized Radar Cross Section"
	attribute missing_value = -99.0
	attribute short_name = "NRCS Sigma0 (dB)"
	attribute standard_name = "surface_backwards_scattering_coefficient_of_radar_wave"
	attribute units = "1"
dataset /level: uint8, shape (1)
	attribute positive = "up"
	attribute standard_name = "height"
	attribute units = "m"
// level: first 0, last 0, count 1
dataset /projection: uint32, shape ()
	attribute false_easting = 0.0
	attribute false_northing = 0.0
	attribute grid_mapping_name = "polar_stereographic"
	attribute inverse_flattening = 298.257223563
	attribute latitude_of_projection_origin = 90.0
	attribute proj4 = "+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 semi_major_axis = 6378137.0
	attribute spatial_ref = "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 standard_parallel = 60.0
	attribute straight_vertical_longitude_from_pole = -45.0
	attribute units = "m"
dataset /time: float64, shape (1)
	attribute CoordinateAxisType = "Time"
	attribute axis = "T"
	attribute standard_name = "time"
	attribute time_origin = "01-JAN-1970 00:00:00"
	attribute units = "seconds since 1970-01-01T00:00:00Z"
// time: first 1681430399.0, last 1681430399.0, count 1
dataset /x: float32, shape (10998)
	attribute axis = "X"
	attribute comment = "x values are the centers of the grid cells"
	attribute long_name = "x coordinate of projection"
	attribute standard_name = "projection_x_coordinate"
	attribute units = "m"
// x: first -5498550.0, last 5498450.0, count 10998
dataset /y: float32, shape (10998)
	attribute axis = "Y"
	attribute comment = "y values are the centers of the grid cells"
	attribute long_name = "y coordinate of projection"
	attribute standard_name = "projection_y_coordinate"
	attribute units = "m"
// y: first -5498550.0, last 5498450.0, count 10998