X x-coordinate in Cartesian system XDim /HDFEOS/GRIDS/NpPolarGrid25km/XDim Y y-coordinate in Cartesian system YDim /HDFEOS/GRIDS/NpPolarGrid25km/YDim X x-coordinate in Cartesian system XDim /HDFEOS/GRIDS/SpPolarGrid25km/XDim Y y-coordinate in Cartesian system YDim /HDFEOS/GRIDS/SpPolarGrid25km/YDim StructMetadata.0 /HDFEOS INFORMATION/StructMetadata.0 CoreMetadata.0 /HDFEOS INFORMATION/CoreMetadata.0 Center where data are processed Processing_Facility /Processing_Facility Digital object identifier of the dataset DOI /DOI lon lat 36.5 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_36H_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_36H_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 10.7 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_10H_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_10H_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 23.8 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_23V_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_23V_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat Sea ice concentration daily average percent data value meaning: 0 -- Open Water, 110 -- missing/not calculated, 120 -- Land SI_25km_NH_ICECON_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_ICECON_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 10.7 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_10H_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_10H_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 23.8 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_23H_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_23H_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 36.5 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_36H_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_36H_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat Sea ice concentration daily ascending average using the difference between BBA and NT2 algorithms percent data value meaning: 0 -- Open Water, 1 to 100 or -1 to -100 -- Percent difference between algorithms, 120 -- Land, 200 to 300 -- Missing NT2 value (200+BBA), -200 to -300 -- Missing BBA value (-200 - NT2) SI_25km_NH_ICEDIFF_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_ICEDIFF_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 6.9 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_06V_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_06V_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 18.7 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_18V_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_18V_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 18.7 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_18H_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_18H_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat Sea ice concentration daily descending average using the difference between BBA and NT2 algorithms percent data value meaning: 0 -- Open Water, 1 to 100 or -1 to -100 -- Percent difference between algorithms, 120 -- Land, 200 to 300 -- Missing NT2 value (200+BBA), -200 to -300 -- Missing BBA value (-200 - NT2) SI_25km_NH_ICEDIFF_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_ICEDIFF_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 10.7 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_10V_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_10V_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat Sea ice concentration daily descending average percent data value meaning: 0 -- Open Water, 110 -- missing/not calculated, 120 -- Land SI_25km_NH_ICECON_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_ICECON_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 18.7 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_18V_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_18V_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 18.7 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_18H_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_18H_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 6.9 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_06V_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_06V_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 6.9 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_06H_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_06H_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat Sea ice concentration daily ascending average percent data value meaning: 0 -- Open Water, 110 -- missing/not calculated, 120 -- Land SI_25km_NH_ICECON_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_ICECON_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 6.9 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_06H_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_06H_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 23.8 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_23H_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_23H_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 36.5 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_36V_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_36V_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 36.5 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_36V_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_36V_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 36.5 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_36H_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_36H_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 6.9 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_06V_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_06V_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 89.0 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_89V_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_89V_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 18.7 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_18V_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_18V_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 36.5 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_36V_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_36V_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 89.0 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_89H_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_89H_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 89.0 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_89H_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_89H_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 23.8 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_23V_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_23V_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 6.9 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_06H_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_06H_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 10.7 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_10V_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_10V_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 89.0 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_89H_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_89H_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 89.0 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_89V_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_89V_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 23.8 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_23H_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_23H_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat Sea ice concentration daily average using the difference between BBA and NT2 algorithms percent data value meaning: 0 -- Open Water, 1 to 100 or -1 to -100 -- Percent difference between algorithms, 120 -- Land, 200 to 300 -- Missing NT2 value (200+BBA), -200 to -300 -- Missing BBA value (-200 - NT2) SI_25km_NH_ICEDIFF_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_ICEDIFF_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 23.8 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_23V_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_23V_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 10.7 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_10V_DAY /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_10V_DAY NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 89.0 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_89V_ASC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_89V_ASC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 10.7 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_10H_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_10H_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 18.7 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_NH_18H_DSC /HDFEOS/GRIDS/NpPolarGrid25km/Data Fields/SI_25km_NH_18H_DSC NpPolarGrid25km_YDim NpPolarGrid25km_XDim Longitude degrees_east longitude lon /HDFEOS/GRIDS/NpPolarGrid25km/lon NpPolarGrid25km_YDim NpPolarGrid25km_XDim Latitude degrees_north latitude lat /HDFEOS/GRIDS/NpPolarGrid25km/lat NpPolarGrid25km_YDim NpPolarGrid25km_XDim lon lat 89.0 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_89H_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_89H_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 6.9 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_06H_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_06H_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 89.0 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_89V_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_89V_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat Sea ice concentration daily descending average using the difference between BBA and NT2 algorithms percent data value meaning: 0 -- Open Water, 1 to 100 or -1 to -100 -- Percent difference between algorithms, 120 -- Land, 200 to 300 -- Missing NT2 value (200+BBA), -200 to -300 -- Missing BBA value (-200 - NT2) SI_25km_SH_ICEDIFF_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_ICEDIFF_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat Sea ice concentration daily average percent data value meaning: 0 -- Open Water, 110 -- missing/not calculated, 120 -- Land SI_25km_SH_ICECON_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_ICECON_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 23.8 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_23V_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_23V_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 18.7 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_18H_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_18H_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 10.7 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_10H_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_10H_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 10.7 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_10V_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_10V_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 18.7 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_18H_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_18H_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat Sea ice concentration daily ascending average percent data value meaning: 0 -- Open Water, 110 -- missing/not calculated, 120 -- Land SI_25km_SH_ICECON_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_ICECON_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 18.7 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_18V_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_18V_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 36.5 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_36H_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_36H_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 6.9 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_06H_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_06H_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 89.0 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_89V_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_89V_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 89.0 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_89H_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_89H_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 89.0 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_89V_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_89V_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 36.5 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_36V_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_36V_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 23.8 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_23H_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_23H_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 10.7 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_10H_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_10H_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 10.7 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_10H_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_10H_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 10.7 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_10V_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_10V_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 23.8 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_23H_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_23H_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 23.8 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_23H_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_23H_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 6.9 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_06H_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_06H_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat Sea ice concentration daily average using the difference between BBA and NT2 algorithms percent data value meaning: 0 -- Open Water, 1 to 100 or -1 to -100 -- Percent difference between algorithms, 120 -- Land, 200 to 300 -- Missing NT2 value (200+BBA), -200 to -300 -- Missing BBA value (-200 - NT2) SI_25km_SH_ICEDIFF_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_ICEDIFF_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat Sea ice concentration daily ascending average using the difference between BBA and NT2 algorithms percent data value meaning: 0 -- Open Water, 1 to 100 or -1 to -100 -- Percent difference between algorithms, 120 -- Land, 200 to 300 -- Missing NT2 value (200+BBA), -200 to -300 -- Missing BBA value (-200 - NT2) SI_25km_SH_ICEDIFF_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_ICEDIFF_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat Sea ice concentration daily descending average percent data value meaning: 0 -- Open Water, 110 -- missing/not calculated, 120 -- Land SI_25km_SH_ICECON_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_ICECON_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 18.7 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_18V_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_18V_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 36.5 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_36V_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_36V_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 6.9 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_06V_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_06V_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 18.7 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_18H_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_18H_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 6.9 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_06V_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_06V_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 23.8 GHz vertical daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_23V_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_23V_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 89.0 GHz horizontal daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_89H_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_89H_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 23.8 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_23V_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_23V_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 36.5 GHz horizontal daily average Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_36H_DAY /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_36H_DAY SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 6.9 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_06V_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_06V_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 18.7 GHz vertical daily average ascending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_18V_ASC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_18V_ASC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 36.5 GHz horizontal daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_36H_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_36H_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 10.7 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_10V_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_10V_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim lon lat 36.5 GHz vertical daily average descending Tbs 0.000000000 0 0.1000000015 netCDF brightness_temperature unpacked = scale_factor x packed + add_offset degree_kelvin SI_25km_SH_36V_DSC /HDFEOS/GRIDS/SpPolarGrid25km/Data Fields/SI_25km_SH_36V_DSC SpPolarGrid25km_YDim SpPolarGrid25km_XDim Longitude longitude degrees_east lon /HDFEOS/GRIDS/SpPolarGrid25km/lon SpPolarGrid25km_YDim SpPolarGrid25km_XDim Latitude degrees_north latitude lat /HDFEOS/GRIDS/SpPolarGrid25km/lat SpPolarGrid25km_YDim SpPolarGrid25km_XDim GROUP = INVENTORYMETADATA GROUPTYPE = MASTERGROUP GROUP = ECSDATAGRANULE OBJECT = LOCALGRANULEID NUM_VAL = 1 VALUE = "AMSR_U2_L3_SeaIce25km_B04_20181008.he5" END_OBJECT = LOCALGRANULEID OBJECT = PRODUCTIONDATETIME NUM_VAL = 1 VALUE = "2025-03-02T13:26:18Z" END_OBJECT = PRODUCTIONDATETIME END_GROUP = ECSDATAGRANULE GROUP = MEASUREDPARAMETER OBJECT = MEASUREDPARAMETERCONTAINER CLASS = "1" OBJECT = PARAMETERNAME NUM_VAL = 1 CLASS = "1" VALUE = "Sea Ice Parameters" END_OBJECT = PARAMETERNAME GROUP = QAFLAGS CLASS = "1" OBJECT = AUTOMATICQUALITYFLAG NUM_VAL = 1 CLASS = "1" VALUE = "Passed" END_OBJECT = AUTOMATICQUALITYFLAG OBJECT = AUTOMATICQUALITYFLAGEXPLANATION NUM_VAL = 1 CLASS = "1" VALUE = "Program Execution Completed" END_OBJECT = AUTOMATICQUALITYFLAGEXPLANATION OBJECT = OPERATIONALQUALITYFLAG NUM_VAL = 1 CLASS = "1" VALUE = "Not Investigated" END_OBJECT = OPERATIONALQUALITYFLAG OBJECT = OPERATIONALQUALITYFLAGEXPLANATION NUM_VAL = 1 CLASS = "1" VALUE = "Currently not used" END_OBJECT = OPERATIONALQUALITYFLAGEXPLANATION OBJECT = SCIENCEQUALITYFLAG NUM_VAL = 1 CLASS = "1" VALUE = "Passed" END_OBJECT = SCIENCEQUALITYFLAG OBJECT = SCIENCEQUALITYFLAGEXPLANATION NUM_VAL = 1 CLASS = "1" VALUE = "Mask files are recent" END_OBJECT = SCIENCEQUALITYFLAGEXPLANATION END_GROUP = QAFLAGS GROUP = QASTATS CLASS = "1" OBJECT = QAPERCENTMISSINGDATA NUM_VAL = 1 CLASS = "1" VALUE = 0 END_OBJECT = QAPERCENTMISSINGDATA END_GROUP = QASTATS END_OBJECT = MEASUREDPARAMETERCONTAINER END_GROUP = MEASUREDPARAMETER GROUP = COLLECTIONDESCRIPTIONCLASS OBJECT = SHORTNAME NUM_VAL = 1 VALUE = "AU_SI25" END_OBJECT = SHORTNAME OBJECT = VERSIONID NUM_VAL = 1 VALUE = 1 END_OBJECT = VERSIONID END_GROUP = COLLECTIONDESCRIPTIONCLASS GROUP = INPUTGRANULE OBJECT = INPUTPOINTER NUM_VAL = 29 VALUE = ("GW1AM2_201810080008_175A_L1SGRTBR_2220220.h5", "GW1AM2_201810080057_191D_L1SGRTBR_2220220.h5", "GW1AM2_201810080147_191A_L1SGRTBR_2220220.h5", "GW1AM2_201810080236_207D_L1SGRTBR_2220220.h5", "GW1AM2_201810080325_207A_L1SGRTBR_2220220.h5", "GW1AM2_201810080415_223D_L1SGRTBR_2220220.h5", "GW1AM2_201810080504_223A_L1SGRTBR_2220220.h5", "GW1AM2_201810080554_006D_L1SGRTBR_2220220.h5", "GW1AM2_201810080643_006A_L1SGRTBR_2220220.h5", "GW1AM2_201810080733_022D_L1SGRTBR_2220220.h5", "GW1AM2_201810080822_022A_L1SGRTBR_2220220.h5", "GW1AM2_201810080912_038D_L1SGRTBR_2220220.h5", "GW1AM2_201810081001_038A_L1SGRTBR_2220220.h5", "GW1AM2_201810081050_054D_L1SGRTBR_2220220.h5", "GW1AM2_201810081140_054A_L1SGRTBR_2220220.h5", "GW1AM2_201810081229_070D_L1SGRTBR_2220220.h5", "GW1AM2_201810081319_070A_L1SGRTBR_2220220.h5", "GW1AM2_201810081408_086D_L1SGRTBR_2220220.h5", "GW1AM2_201810081458_086A_L1SGRTBR_2220220.h5", "GW1AM2_201810081547_102D_L1SGRTBR_2220220.h5", "GW1AM2_201810081636_102A_L1SGRTBR_2220220.h5", "GW1AM2_201810081726_118D_L1SGRTBR_2220220.h5", "GW1AM2_201810081815_118A_L1SGRTBR_2220220.h5", "GW1AM2_201810081905_134D_L1SGRTBR_2220220.h5", "GW1AM2_201810081954_134A_L1SGRTBR_2220220.h5", "GW1AM2_201810082044_150D_L1SGRTBR_2220220.h5", "GW1AM2_201810082133_150A_L1SGRTBR_2220220.h5", "GW1AM2_201810082223_166D_L1SGRTBR_2220220.h5", "GW1AM2_201810082312_166A_L1SGRTBR_2220220.h5") END_OBJECT = INPUTPOINTER END_GROUP = INPUTGRANULE GROUP = SPATIALDOMAINCONTAINER GROUP = HORIZONTALSPATIALDOMAINCONTAINER GROUP = BOUNDINGRECTANGLE OBJECT = WESTBOUNDINGCOORDINATE NUM_VAL = 1 VALUE = -180.0 END_OBJECT = WESTBOUNDINGCOORDINATE OBJECT = NORTHBOUNDINGCOORDINATE NUM_VAL = 1 VALUE = 89.24 END_OBJECT = NORTHBOUNDINGCOORDINATE OBJECT = EASTBOUNDINGCOORDINATE NUM_VAL = 1 VALUE = 180.0 END_OBJECT = EASTBOUNDINGCOORDINATE OBJECT = SOUTHBOUNDINGCOORDINATE NUM_VAL = 1 VALUE = -89.24 END_OBJECT = SOUTHBOUNDINGCOORDINATE END_GROUP = BOUNDINGRECTANGLE END_GROUP = HORIZONTALSPATIALDOMAINCONTAINER END_GROUP = SPATIALDOMAINCONTAINER GROUP = RANGEDATETIME OBJECT = RANGEBEGINNINGDATE NUM_VAL = 1 VALUE = "2018-10-08" END_OBJECT = RANGEBEGINNINGDATE OBJECT = RANGEBEGINNINGTIME NUM_VAL = 1 VALUE = "00:08:10.677Z" END_OBJECT = RANGEBEGINNINGTIME OBJECT = RANGEENDINGDATE NUM_VAL = 1 VALUE = "2018-10-09" END_OBJECT = RANGEENDINGDATE OBJECT = RANGEENDINGTIME NUM_VAL = 1 VALUE = "00:01:57.970Z" END_OBJECT = RANGEENDINGTIME END_GROUP = RANGEDATETIME GROUP = PGEVERSIONCLASS OBJECT = PGEVERSION NUM_VAL = 1 VALUE = "04" END_OBJECT = PGEVERSION END_GROUP = PGEVERSIONCLASS GROUP = ADDITIONALATTRIBUTES OBJECT = ADDITIONALATTRIBUTESCONTAINER CLASS = "1" OBJECT = ADDITIONALATTRIBUTENAME CLASS = "1" NUM_VAL = 1 VALUE = "identifier_product_doi" END_OBJECT = ADDITIONALATTRIBUTENAME GROUP = INFORMATIONCONTENT CLASS = "1" OBJECT = PARAMETERVALUE NUM_VAL = 1 CLASS = "1" VALUE = "10.5067/TRUIAL3WPAUP" END_OBJECT = PARAMETERVALUE END_GROUP = INFORMATIONCONTENT END_OBJECT = ADDITIONALATTRIBUTESCONTAINER OBJECT = ADDITIONALATTRIBUTESCONTAINER CLASS = "2" OBJECT = ADDITIONALATTRIBUTENAME CLASS = "2" NUM_VAL = 1 VALUE = "identifier_product_doi_authority" END_OBJECT = ADDITIONALATTRIBUTENAME GROUP = INFORMATIONCONTENT CLASS = "2" OBJECT = PARAMETERVALUE NUM_VAL = 1 CLASS = "2" VALUE = "http://dx.doi.org" END_OBJECT = PARAMETERVALUE END_GROUP = INFORMATIONCONTENT END_OBJECT = ADDITIONALATTRIBUTESCONTAINER END_GROUP = ADDITIONALATTRIBUTES END_GROUP = INVENTORYMETADATA END CF-1.6 AMSR-E/AMSR2 Unified L3 Daily 25 km Brightness Temperatures & Sea Ice Concentration Polar Grids Please cite these data as: Markus, T., J. C. Comiso, and W. N. Meier. 2018. AMSR-E/AMSR2 Unified L3 Daily 25 km Brightness Temperatures & Sea Ice Concentration Polar Grids, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/TRUIAL3WPAUP. satellite observation NASA's AMSR Science Investigator-led Processing System (SIPS) This version of the Sea Ice processing code contains updates provided by the science team on September 16, 2019. For details on these updates, see the release notes provided in the DAP. HDFEOS_5.1.16 /HDFEOS INFORMATION