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Description
This data set contains twice-daily, enhanced-resolution brightness temperature data derived from the SMAP radiometer. Data are available on the Northern Hemisphere, Southern Hemisphere, Temperate, and Mid-Latitude (sub-set of Global) EASE-Grid 2.0 projections and on the 3 km, 3.125 km, 9 km, 25 km, and 36 km resolution grids. This data set applies the same SIR technique used to derive brightness temperatures from the SMMR, AMSR-E, and SSM/I-SSMIS sensors and is a companion product for the MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR data set (DOI: 10.5067/MEASURES/CRYOSPHERE/NSIDC-0630.001).
Version Description
The following changes were made for this update:
-Input data set changed from SPL1BTB V4 to SPL1BTB V7
-Temporal coverage extended to 01 May 2021
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
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Brodzik, M. J., Long, D., & Hardman, M. (2021). SMAP Radiometer Twice-Daily rSIR-Enhanced EASE-Grid 2.0 Brightness Temperatures, Version 2 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/YAMX52BXFL10 Date Accessed: 2026-04-30
Brodzik, Mary Jo, David Long, and Molly Hardman. “SMAP Radiometer Twice-Daily RSIR-Enhanced EASE-Grid 2.0 Brightness Temperatures, Version 2.” NASA National Snow and Ice Data Center Distributed Active Archive Center, 2021. doi:10.5067/YAMX52BXFL10. Date Accessed: 2026-04-30
Brodzik, Mary Jo, et al. SMAP Radiometer Twice-Daily RSIR-Enhanced EASE-Grid 2.0 Brightness Temperatures, Version 2. NASA National Snow and Ice Data Center Distributed Active Archive Center, 2021, doi:10.5067/YAMX52BXFL10. Date Accessed: 2026-04-30