New versions of the following SMAP Level-1, Level-2, and Level-3 Data Sets are available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Noteworthy changes to the L1 data include a new land/water mask and algorithm modifications to reduce radio frequency interference. The L2 and L3 products are updated on the basis of this new source data. More detailed descriptions of the changes are available in the data set documentation. Note that coverage is currently available from 04 Dec 2023 onward. Data since 31 March 2015 will become available as they are reprocessed. Coverage will be continuous after reprocessing is complete.
SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures, Version 6
SMAP L1C Radiometer Half-Orbit 36 km EASE-Grid Brightness Temperatures, Version 6
SMAP Enhanced L1C Radiometer Half-Orbit 9 km EASE-Grid Brightness Temperatures, Version 4
SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture, Version 9
SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture, Version 6
SMAP L3 Radiometer Global Daily 36 km EASE-Grid Soil Moisture, Version 9
SMAP Enhanced L3 Radiometer Global and Polar Grid Daily 9 km EASE-Grid Soil Moisture, Version 6
SMAP L3 Radiometer Global and Northern Hemisphere Daily 36 km EASE-Grid Freeze/Thaw State, Version 4
SMAP Enhanced L3 Radiometer Global and Northern Hemisphere Daily 9 km EASE-Grid Freeze/Thaw State, Version 4