SMAP L2 Radar/Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture, Version 3
This Level-2 (L2) soil moisture product provides estimates of global land surface conditions retrieved by both the Soil Moisture Active Passive (SMAP) radar and radiometer during 6:00 a.m. descending half-orbit passes. SMAP L-band backscatter and brightness temperatures are used to derive soil moisture data, which are then resampled to an Earth-fixed, global, cylindrical 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0).
This is the most recent version of these data.
Changes to this version include:
- Transitioned to Validated-Stage 2
- Uses SPL2SMA V3 Validated and SPL2SMP V3 Validated as input
- Snapshot beta parameter estimation
- Updated soil texture files (renormalized cases where sand+clay > 100%)
- Updated default beta parameter
For the full major and minor version history, go to https://nsidc.org/data/smap/data_versions.
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Data: Data integrity and usability verified; data customization services available for select data
Documentation: Key metadata and comprehensive user guide available
User Support: Assistance with data access and usage; guidance on use of data in tools and data customization services
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As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.
Entekhabi, D., N. Das, E. G. Njoku, J. T. Johnson, and J. Shi. 2016. SMAP L2 Radar/Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture, Version 3. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/8YTYSV6JGBK2. [Date Accessed].