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",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4054"]], PROJECTION["Polar_Stereographic"], PARAMETER["latitude_of_origin",70], PARAMETER["central_meridian",-45], PARAMETER["scale_factor",1], PARAMETER["false_easting",0], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["X",EAST], AXIS["Y",NORTH], AUTHORITY["EPSG","3411"]]