Data set update: AMSR-E/AMSR2 Unified L2B Half-Orbit 25 km EASE-Grid Surface Soil Moisture, Version 1

The AMSR-E/AMSR2 Unified L2B Half-Orbit 25 km EASE-Grid Surface Soil Moisture, Version 1 data set, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated. This update includes the addition of the AMSR-E derived data, with temporal coverage of the data set now spanning June 2002 - present (with a gap in data from October 2011 - July 2012, between the end of the AMSR-E mission and the beginning of AMSR2).

This Level-2B product contains surface soil moisture at 25 km resolution, estimated from AMSR-E and AMSR2 brightness temperature (Tb) observations using two different approaches: the Normalized Polarization Difference (NPD) algorithm and the Single Channel Algorithm (SCA). Soil moisture estimates are derived from AMSR-E and AMSR2 data which have been spatially resampled by the Japan Aerospace Exploration Agency (JAXA) to intercalibrate, or “unify,” the two sensors.

Data set DOI: https://doi.org/10.5067/IKQ0G7ODMLC7