HDF5 file, superblock version 0
group /
	attribute Conventions = "CF-1.6, COARDS, ACDD-1.3"
	attribute Metadata_Link = "http://nsidc.org/api/metadata?id=g02202"
	attribute acknowledgment = "This project was supported in part by a grant from the NOAA Climate Data Record Program. Production of original NASA Team and Bootstrap algorithm estimates supported by the NASA Polar Distributed Active Archive Center. The sea ice concentration algorithms were developed by Donald J. Cavalieri, Josefino C. Comiso, Claire L. Parkinson, and others at the NASA Goddard Space Flight Center in Greenbelt, MD."
	attribute cdm_data_type = "Grid"
	attribute cdr_variable = "seaice_conc_cdr"
	attribute comment = "none"
	attribute contributor_name = "Walt Meier, Ruth Duerr, Florence Fetterer, Julienne Stroeve, Matt Savoie, Sean Mallory"
	attribute contributor_role = "PrincipalInvestigator,author,author,author,author,author"
	attribute creator_email = "nsidc@nsidc.org"
	attribute creator_url = "http://nsidc.org/"
	attribute date_created = "2017-11-28T19:34:50Z"
	attribute geospatial_lat_max = 90.0
	attribute geospatial_lat_min = 31.35
	attribute geospatial_lat_units = "degrees_north"
	attribute geospatial_lon_max = 180.0
	attribute geospatial_lon_min = -180.0
	attribute geospatial_lon_units = "degrees_east"
	attribute history = "2017-07-03T15:07:45Z: Data file created using software: git@bitbucket.org:nsidc/seaice_cdr.git@9b08592bfdd4ff7d6fdf2b56f7d33c58e974ace0 /n 2018-05-22T14:57:56: Additional metadata was added. Timestamp was converted to seconds since 1970-01-01T00:00:00Z."
	attribute id = "G02202"
	attribute institution = "NSIDC > National Snow and Ice Data Center, NOAA"
	attribute keywords = "EARTH SCIENCE > CRYOSPHERE > SEA ICE > SEA ICE CONCENTRATION, Continent > North America > Canada > Hudson Bay, Geographic Region > Arctic, Geographic Region > Polar, Geographic Region > Northern Hemisphere, Ocean > Arctic Ocean, Ocean > Arctic Ocean > Barents Sea, Ocean > Arctic Ocean > Beaufort Sea, Ocean > Arctic Ocean > Chukchi Sea, CONTINENT > NORTH AMERICA > CANADA > HUDSON BAY, Ocean > Atlantic Ocean > North Atlantic Ocean > Davis Straight, OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF ST LAWRENCE, Ocean > Atlantic Ocean > North Atlantic Ocean > North Sea, Ocean > Atlantic Ocean > North Atlantic Ocean > Norwegian Sea, OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > SVALBARD AND JAN MAYEN, Ocean > Pacific Ocean, Ocean > Pacific Ocean > North Pacific Ocean > Bering Sea, Ocean > Pacific Ocean > North Pacific Ocean > Sea Of Okhotsk, "
	attribute keywords_vocabulary = "NASA Global Change Master Directory (GCMD) Keywords, Version 7.0.0"
	attribute license = "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. Please acknowledge the use of these data with the following statement: \"These data were provided by NOAA's Center for Satellite Applications & Research (STAR) and the CoastWatch program and distributed by NOAA/NMFS/SWFSC/ERD. \" To reference these data as a citation in a paper, please follow the instructions in the license and at this link: https://coastwatch.pfeg.noaa.gov/erddap/information.html#citeDataset"
	attribute naming_authority = "nsidc.org"
	attribute platform = "DMSP 5D-3/F17 > Defense Meteorological Satellite Program-F17"
	attribute processing_level = "NOAA Level 3"
	attribute product_version = "v03r01"
	attribute program = "NOAA Climate Data Record Program"
	attribute proj_GeoTransform = "-3850000.0 25000.0 0 5850000.0 0 25000.0"
	attribute proj_false_easting = 0.0
	attribute proj_false_northing = 0.0
	attribute proj_grid_boundary_bottom_projected_y = -5350000.0
	attribute proj_grid_boundary_left_projected_x = -3850000.0
	attribute proj_grid_boundary_right_projected_x = 3750000.0
	attribute proj_grid_boundary_top_projected_y = 5850000.0
	attribute proj_grid_mapping_name = "polar_stereographic"
	attribute proj_latitude_of_projection_origin = 90.0
	attribute proj_longitude_of_projection_origin = -45.0
	attribute proj_parent_grid_cell_column_subset_end = 304.0
	attribute proj_parent_grid_cell_column_subset_start = 0.0
	attribute proj_parent_grid_cell_row_subset_end = 448.0
	attribute proj_parent_grid_cell_row_subset_start = 0.0
	attribute proj_proj4text = "+proj=stere +lat_0=90 +lat_ts=70 +lon_0=-45 +k=1 +x_0=0 +y_0=0 +a=6378273 +b=6356889.449 +units=m +no_defs"
	attribute proj_scaling_factor = 1.0
	attribute proj_semimajor_radius = 6378273.0
	attribute proj_semiminor_radius = 6356889.449
	attribute proj_spatial_ref = "PROJCS[\"NSIDC Sea Ice Polar Stereographic North\",GEOGCS[\"Unspecified datum based upon the Hughes 1980 ellipsoid\",DATUM[\"Not_specified_based_on_Hughes_1980_ellipsoid\",SPHEROID[\"Hughes 1980\",6378273,298.279411123061,AUTHORITY[\"EPSG\",\"7058\"]],AUTHORITY[\"EPSG\",\"6054\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.01745329251994328,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4054\"]],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],PROJECTION[\"Polar_Stereographic\"],PARAMETER[\"latitude_of_origin\",70],PARAMETER[\"central_meridian\",-45],PARAMETER[\"scale_factor\",1],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],AUTHORITY[\"EPSG\",\"3411\"],AXIS[\"X\",UNKNOWN],AXIS[\"Y\",UNKNOWN]]"
	attribute proj_srid = "urn:ogc:def:crs:EPSG::3411"
	attribute proj_standard_parallel = 70.0
	attribute proj_straight_vertical_longitude_from_pole = 135.0
	attribute proj_units = "meters"
	attribute project = "NOAA/NSIDC passive microwave sea ice concentration climate data record"
	attribute projection = "EPSG:3411, https://epsg.io/3411"
	attribute publisher_email = "erd.data@noaa.gov"
	attribute publisher_name = "NOAA NMFS SWFSC ERD"
	attribute publisher_type = "institution"
	attribute publisher_url = "https://coastwatch.pfeg.noaa.gov"
	attribute references = "Comiso, J. C., and F. Nishio. 2008. Trends in the Sea Ice Cover Using Enhanced and Compatible AMSR-E, SSM/I, and SMMR Data. Journal of Geophysical Research 113, C02S07, doi:10.1029/2007JC0043257. ; Comiso, J. C., D. Cavalieri, C. Parkinson, and P. Gloersen. 1997. Passive Microwave Algorithms for Sea Ice Concentrations: A Comparison of Two Techniques. Remote Sensing of the Environment 60(3):357-84. ; Comiso, J. C. 1984. Characteristics of Winter Sea Ice from Satellite Multispectral Microwave Observations. Journal of Geophysical Research 91(C1):975-94. ; Cavalieri, D. J., P. Gloersen, and W. J. Campbell. 1984. Determination of Sea Ice Parameters with the NIMBUS-7 SMMR. Journal of Geophysical Research 89(D4):5355-5369. ; Cavalieri, D. J., C. l. Parkinson, P. Gloersen, J. C. Comiso, and H. J. Zwally. 1999. Deriving Long-term Time Series of Sea Ice Cover from Satellite Passive-Microwave Multisensor Data Sets. Journal of Geophysical Research 104(7):	15,803-15,814."
	attribute sensor = "SSMI/S > Special Sensor Microwave Imager/Sounder"
	attribute software_version_id = "git@bitbucket.org:nsidc/seaice_cdr.git@a4589e06e58905b081065775582a0a2eb2b2400d"
	attribute source = " Satellite observations"
	attribute sourceUrl = "ftp://sidads.colorado.edu/pub/DATASETS/NOAA/G02202_V3"
	attribute spatial_resolution = "25km"
	attribute standard_name_vocabulary = "CF Standard Name Table (v16, 11 October 2010)"
	attribute summary = "This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. It provides a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through the most recent processing for both the north and south polar regions. In addition, three other sea ice concentration products are included with the CDR that extend the sea ice measurements back to 26 October 1978. However, these three products are not included in the official CDR because processing the older data in a way that follows the standards of a CDR is not currently possible. All data are on a 25 km x 25 km grid. Variables containing standard deviation, quality flags, and projection information are also included."
	attribute time_coverage_duration = "P1D"
	attribute time_coverage_end = "2008-06-24T23:59:59Z"
	attribute time_coverage_resolution = "P1D"
	attribute time_coverage_start = "2008-06-24T00:00:00Z"
	attribute title = "NOAA/NSIDC Science Quality Climate Data Record of Passive Microwave Sea Ice Concentration Version 3, Science Quality, Daily, Arctic"
dataset /goddard_bt_seaice_conc: int8, shape (1, 448, 304)
	attribute _FillValue = -1
	attribute _Unsigned = "true"
	attribute cell_methods = "time: mean (interval: 1 day)"
	attribute coordinates = "longitude latitude time"
	attribute coverage_content_type = "physicalMeasurement"
	attribute datum = "+ellps=urn:ogc:def:crs:EPSG::4326"
	attribute flag_meanings = "pole_hole unused coastal land_mask missing_data"
	attribute flag_values = -5, -4, -3, -2, -1
	attribute grid_mapping = "projection"
	attribute ioos_category = "Ice Distribution"
	attribute long_name = "Passive Microwave Daily Northern Hemisphere Sea Ice Concentration by Bootstrap algorithm with Goddard QC"
	attribute reference = "Documentation available at: http://nsidc.org/data/nsidc-0079.html"
	attribute scale_factor = 0.00999999978
	attribute standard_name = "sea_ice_area_fraction"
	attribute units = "1"
	attribute valid_range = 0, 100
dataset /goddard_merged_seaice_conc: int8, shape (1, 448, 304)
	attribute _FillValue = -1
	attribute _Unsigned = "true"
	attribute cell_methods = "time: mean (interval: 1 day)"
	attribute coordinates = "longitude latitude time"
	attribute coverage_content_type = "physicalMeasurement"
	attribute datum = "+ellps=urn:ogc:def:crs:EPSG::4326"
	attribute flag_meanings = "pole_hole lakes coastal land_mask missing_data"
	attribute flag_values = -5, -4, -3, -2, -1
	attribute grid_mapping = "projection"
	attribute ioos_category = "Ice Distribution"
	attribute long_name = "Goddard Edited Climate Data Record of Passive Microwave Daily Northern Hemisphere Sea Ice Concentration, Goddard Edited"
	attribute reference = "http://nsidc.org/data/nsidc-0051.html http://nsidc.org/data/nsidc-0079.html"
	attribute scale_factor = 0.00999999978
	attribute standard_name = "sea_ice_area_fraction"
	attribute units = "1"
	attribute valid_range = 0, 100
dataset /goddard_nt_seaice_conc: int8, shape (1, 448, 304)
	attribute _FillValue = -1
	attribute _Unsigned = "true"
	attribute cell_methods = "time: mean (interval: 1 day)"
	attribute coordinates = "longitude latitude time"
	attribute coverage_content_type = "physicalMeasurement"
	attribute datum = "+ellps=urn:ogc:def:crs:EPSG::4326"
	attribute flag_meanings = "pole_hole unused coastal land_mask missing_data"
	attribute flag_values = -5, -4, -3, -2, -1
	attribute grid_mapping = "projection"
	attribute ioos_category = "Ice Distribution"
	attribute long_name = "Passive Microwave Daily Northern Hemisphere Sea Ice Concentration by NASA Team algorithm with Goddard QC"
	attribute reference = "Documentation available at: http://nsidc.org/data/nsidc-0051.html"
	attribute scale_factor = 0.00999999978
	attribute standard_name = "sea_ice_area_fraction"
	attribute units = "1"
	attribute valid_range = 0, 100
dataset /latitude: float64, shape (448, 304)
	attribute _FillValue = -999.0
	attribute coverage_content_type = "coordinate"
	attribute ioos_category = "Location"
	attribute long_name = "latitude"
	attribute standard_name = "latitude"
	attribute units = "degrees_north"
	attribute valid_range = 0.0, 90.0
dataset /longitude: float64, shape (448, 304)
	attribute _FillValue = -999.0
	attribute coverage_content_type = "coordinate"
	attribute ioos_category = "Location"
	attribute long_name = "longitude"
	attribute standard_name = "longitude"
	attribute units = "degrees_east"
	attribute valid_range = -180.0, 180.0
dataset /melt_onset_day_seaice_conc_cdr: int16, shape (1, 448, 304)
	attribute _FillValue = -1
	attribute _Unsigned = "true"
	attribute cell_methods = "time: mean (interval: 1 day)"
	attribute coordinates = "longitude latitude time"
	attribute coverage_content_type = "physicalMeasurement"
	attribute datum = "+ellps=urn:ogc:def:crs:EPSG::4326"
	attribute grid_mapping = "projection"
	attribute ioos_category = "Ice Distribution"
	attribute long_name = "Day of Snow Melt Onset Over Sea Ice"
	attribute missing_value = -1
	attribute units = "1"
	attribute valid_range = 60, 244
dataset /projection: string(1), shape ()
	attribute GeoTransform = "-3850000.0 25000.0 0 5850000.0 0 25000.0"
	attribute false_easting = 0.0
	attribute false_northing = 0.0
	attribute grid_boundary_bottom_projected_y = -5350000.0
	attribute grid_boundary_left_projected_x = -3850000.0
	attribute grid_boundary_right_projected_x = 3750000.0
	attribute grid_boundary_top_projected_y = 5850000.0
	attribute grid_mapping_name = "polar_stereographic"
	attribute latitude_of_projection_origin = 90.0
	attribute longitude_of_projection_origin = -45.0
	attribute parent_grid_cell_column_subset_end = 304.0
	attribute parent_grid_cell_column_subset_start = 0.0
	attribute parent_grid_cell_row_subset_end = 448.0
	attribute parent_grid_cell_row_subset_start = 0.0
	attribute proj4text = "+proj=stere +lat_0=90 +lat_ts=70 +lon_0=-45 +k=1 +x_0=0 +y_0=0 +a=6378273 +b=6356889.449 +units=m +no_defs"
	attribute scaling_factor = 1.0
	attribute semimajor_radius = 6378273.0
	attribute semiminor_radius = 6356889.449
	attribute spatial_ref = "PROJCS[\"NSIDC Sea Ice Polar Stereographic North\",GEOGCS[\"Unspecified datum based upon the Hughes 1980 ellipsoid\",DATUM[\"Not_specified_based_on_Hughes_1980_ellipsoid\",SPHEROID[\"Hughes 1980\",6378273,298.279411123061,AUTHORITY[\"EPSG\",\"7058\"]],AUTHORITY[\"EPSG\",\"6054\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.01745329251994328,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4054\"]],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],PROJECTION[\"Polar_Stereographic\"],PARAMETER[\"latitude_of_origin\",70],PARAMETER[\"central_meridian\",-45],PARAMETER[\"scale_factor\",1],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],AUTHORITY[\"EPSG\",\"3411\"],AXIS[\"X\",UNKNOWN],AXIS[\"Y\",UNKNOWN]]"
	attribute srid = "urn:ogc:def:crs:EPSG::3411"
	attribute standard_parallel = 70.0
	attribute straight_vertical_longitude_from_pole = 135.0
	attribute units = "meters"
dataset /qa_of_seaice_conc_cdr: int8, shape (1, 448, 304)
	attribute _FillValue = 0
	attribute _Unsigned = "true"
	attribute coordinates = "longitude latitude time"
	attribute coverage_content_type = "qualityInformation"
	attribute datum = "+ellps=urn:ogc:def:crs:EPSG::4326"
	attribute flag_masks = 1, 2, 4, 8, 32, -128
	attribute flag_meanings = "BT_source_for_CDR NT_source_for_CDR no_ice_allowed_per_climatology grid_cell_near_to_coast concentration_below_fifty_percent melt_start_detected"
	attribute grid_mapping = "projection"
	attribute ioos_category = "Quality"
	attribute long_name = "Passive Microwave Daily Northern Hemisphere Sea Ice Concentration QC flags"
	attribute missing_value = 0
	attribute standard_name = "sea_ice_area_fraction status_flag"
	attribute valid_range = 1, 255
dataset /seaice_conc_cdr: int8, shape (1, 448, 304)
	attribute _FillValue = -1
	attribute _Unsigned = "true"
	attribute ancillary_variables = "stdev_of_seaice_conc_cdr qa_of_seaice_conc_cdr"
	attribute cell_methods = "time: mean (interval: 1 day)"
	attribute coordinates = "longitude latitude time"
	attribute coverage_content_type = "physicalMeasurement"
	attribute datum = "+ellps=urn:ogc:def:crs:EPSG::4326"
	attribute flag_meanings = "pole_hole lakes coastal land_mask missing_data"
	attribute flag_values = -5, -4, -3, -2, -1
	attribute grid_mapping = "projection"
	attribute ioos_category = "Ice Distribution"
	attribute long_name = "NOAA/NSIDC Climate Data Record of Passive Microwave Daily Northern Hemisphere Sea Ice Concentration"
	attribute reference = "http://nsidc.org/api/metadata?id=g02202"
	attribute scale_factor = 0.00999999978
	attribute standard_name = "sea_ice_area_fraction"
	attribute units = "1"
	attribute valid_range = 0, 100
dataset /stdev_of_seaice_conc_cdr: float32, shape (1, 448, 304)
	attribute _FillValue = -1.0
	attribute coordinates = "longitude latitude time"
	attribute coverage_content_type = "qualityInformation"
	attribute datum = "+ellps=urn:ogc:def:crs:EPSG::4326"
	attribute grid_mapping = "projection"
	attribute ioos_category = "Quality"
	attribute long_name = "Passive Microwave Daily Northern Hemisphere Sea Ice Concentration Source Estimated Standard Deviation"
	attribute missing_value = -1.0
	attribute valid_range = 0.0, 1.0
dataset /time: float64, shape (1)
	attribute _CoordinateAxisType = "Time"
	attribute axis = "T"
	attribute calendar = "gregorian"
	attribute coverage_content_type = "coordinate"
	attribute ioos_category = "Time"
	attribute long_name = "Centered Time"
	attribute standard_name = "time"
	attribute units = "seconds since 1970-01-01T00:00:00Z"
dataset /xgrid: float32, shape (304)
	attribute _CoordinateAxisType = "GeoX"
	attribute axis = "X"
	attribute comment = " xgrid values are the centers of the grid cells"
	attribute coverage_content_type = "coordinate"
	attribute ioos_category = "Location"
	attribute long_name = "projection_grid_x_centers"
	attribute standard_name = "projection_x_coordinate"
	attribute units = "meters"
	attribute valid_range = -3850000.0, 3750000.0
dataset /ygrid: float32, shape (448)
	attribute _CoordinateAxisType = "GeoY"
	attribute axis = "Y"
	attribute comment = " xgrid values are the centers of the grid cells"
	attribute coverage_content_type = "coordinate"
	attribute ioos_category = "Location"
	attribute long_name = "projection_grid_y_centers"
	attribute standard_name = "projection_y_coordinate"
	attribute units = "meters"
	attribute valid_range = -5350000.0, 5850000.0