SMAP L1A Radiometer Time-Ordered Parsed Telemetry, Version 2
Each Level-1A (L1A) granule incorporates all radiometer data downlinked from the Soil Moisture Active Passive (SMAP) spacecraft for one specific half orbit. The data are scaled instrument counts of the following:
- The first four raw moments of the fullband channel for both vertical and horizontal polarizations
- The complex cross-correlations of the fullband channel
- The 16 subband channels for both vertical and horizontal polarizations
This is the most recent version of these data.
Changes to this version include:
- Transitioned to Validated-Stage 2
- Calibration parameters were adjusted to reduce calibration jumps and drift previously present in the Beta-release; as a result, calibration now meets its less than 0.4 K/month stability back to 31 March 2015
- Additional bit-error checking was performed on Level-0 instrument telemetry
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
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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.
Piepmeier, J. R., E. J. Kim, P. Mohammed, J. Peng, and C. Ruf. 2015. SMAP L1A Radiometer Time-Ordered Parsed Telemetry, Version 2. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/JGV8EY3FGAH1. [Date Accessed].