AMSR-E/AMSR2 Unified L3 Daily 25 km Brightness Temperatures & Sea Ice Concentration Polar Grids V001

Published by NASA NSIDC DAAC | National Aeronautics and Space Administration | Metadata Last Checked: June 28, 2025 | Last Modified: 2025-03-31

This data set reports average daily horizontally and vertically polarized brightness temperatures and sea ice concentrations on 25 km resolution north and south polar stereographic grids. The data are derived from observations acquired by the Advanced Microwave Scanning Radiometer (AMSR) for EOS (AMSR-E) and AMSR2 instruments that have been spatially resampled by the Japan Aerospace Exploration Agency (JAXA) to unify the AMSR-E and AMSR2 missions. Brightness temperatures are available at 6.9 GHz, 10.7 GHz, 18.7 GHz, 23.8 GHz, 36.5 GHz and 89.0 GHz for ascending and descending orbits, and as a single daily average. Sea ice concentrations are generated with the Enhanced NASA Team (NT2) algorithm; a separate variable reports the daily sea ice concentration difference between the legacy AMSR Basic Bootstrap Algorithm (ABA) and the NT2.

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Complete Metadata

bureauCode	[ "026:00" ]
identifier	C1542606320-NSIDC_ECS
issued	2002-06-01
landingPage	https://doi.org/10.5067/TRUIAL3WPAUP
language	[ "en-US" ]
programCode	[ "026:001" ]
spatial	-180.0 30.98 180.0 89.24
temporal	2002-06-01T00:00:00Z/2025-03-24T00:00:00Z
theme	[ "geospatial" ]