Multiple SMAP Validation data sets are now available at NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). These data sets contain soil moisture, soil temperature

Soil Moisture Active Passive Data (SMAP)
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Data Announcements
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The SMAPVEX19-21 Massachusetts and Millbrook Temporary Soil Moisture Network, Version 1 data sets, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center
The SMAPVEX19-21 Massachusetts Vegetation Optical Depth, Version 1 data set is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The goal of
The SMAP/In Situ Core Validation Site Land Surface Parameters Match-Up Data, Version 1 data set, accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC
The SMAPVEX19-21 Massachusetts and Millbrook Temporary Soil Moisture Network, Version 1 data sets, are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center