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Description

The SMAP L1B Radiometer Half-Orbit Radio Frequency Interference and Calibration Data (SPL1BTB_RFICAL) product is an intermediate Level 1B radiometer data product generated by NASA’s Soil Moisture Active Passive (SMAP) mission. SPL1BTB_RFICAL provides unaveraged, time-ordered antenna temperature measurements along with associated radio frequency interference (RFI) diagnostics, calibration parameters, and geolocation information. Data are provided in half-orbit granules and represent radiometer measurements prior to RFI mitigation and spatial averaging. This product is intended for users performing instrument
calibration assessment, RFI characterization, and algorithm development. It is not intended for direct geophysical analysis.

Version Description

Initial release

Product Summary

Platforms
SMAP
Instruments
SMAP L-BAND RADIOMETER
Spatial Extent

N: 86.4 S: -86.4 E: 180 W: -180

Spatial Resolution
11 Kilometers x 28 Kilometers
Spatial Reference System(s)
WGS 84 (EPSG:4326)
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2015-03-31 to Present
Temporal Resolution
49 Minute
Concept ID
C4139310917-NSIDC_CPRD
Data State
ACTIVE
Number of Files/Granules
32137
Processing Level
1B
Published
Science Keywords
ANTENNA 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

Piepmier, J. R., Mohammed-Tano, P. N., Peng, J., Kim, E. J., de Amici, G., & Ruf, C. (2026). SMAP L1B Radiometer Half-Orbit Radio Frequency Interference and Calibration Data, Version 6 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/Q2K1EIRKY7SI Date Accessed: 2026-09-12

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