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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

Product Summary

Platforms
SMAP
Instruments
SMAP L-BAND RADIOMETER
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Spatial Reference System(s)
WGS 84 / NSIDC EASE-Grid 2.0 Global (EPSG:6933)
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2015-03-31 to 2022-12-31
Temporal Resolution
12 Hour
Concept ID
C3177836675-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
248670
Processing Level
3
Published
Science Keywords
Brightness Temperature

Citation

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.

Copy Citation

Brodzik, M. J., Long, D., & Hardman, M. (2021). SMAP Radiometer Twice-Daily rSIR-Enhanced EASE-Grid 2.0 Brightness Temperatures, Version 2 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/YAMX52BXFL10 Date Accessed: 2026-10-06

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Publications Citing This Dataset

Filters
Title Authors Year Referenced Datasets
Evaluation of wet snow dielectric mixing models for L-band radiometric measurement of liquid water content in Greenland's percolation zone
  • Hossan, Alamgir, Colliander, Andreas, Schlegel, Nicole-Jeanne, Harper, Joel, Andrews, Lauren, Kolassa, Jana, Miller, Julie Z., Cullather, Richard
Buried depth of retained meltwater in polar ice sheets detected by multi-source microwave remote sensing observations
  • Shang, Xin-Yi, Zheng, Lei, Liang, Qi, Li, Teng, Cheng, Xiao
Validation of the effective resolution of SMAP enhanced resolution backscatter products
  • Long, David G., Miller, Julie Z.
Evaluating the effective resolution of enhanced resolution SMAP brightness temperature image products
  • Long, David G., Brodzik, Mary J., Hardman, Molly
Assessment of Soil Moisture Retrievals over a Mexican Agricultural Area Using Brightness Temperature of RSIR Products
  • Hernandez-Sanchez, Juan Carlos, Monsivais-Huertero, Alejandro, Judge, Jasmeet
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