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Description

This Level-1B (L1B) product provides calibrated estimates of time-ordered geolocated brightness temperatures measured by the Soil Moisture Active Passive (SMAP) passive microwave radiometer. Brightness temperatures are referenced to the Earth's surface with undesired and erroneous radiometric sources removed. Sources of contamination include Faraday rotation, energy detected from antenna sidelobes and spillover, atmospheric effects, solar radiation, lunar radiation, cosmic microwave background, and galactic emission.

Version Description

Changes to this version include: (1) Transitioned to Validated-Stage 1. (2) Using SPL1BTB V2 data as input, inherited all changes and improvements of the new version.

Product Summary

Platforms
SMAP
Instruments
SMAP L-BAND RADAR
Spatial Extent

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

Spatial Resolution
36 Kilometers x 47 Kilometers
Location
GLOBAL LAND
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2015-03-31 to 2016-04-21
Temporal Resolution
49 Minute
Concept ID
C4100772276-NSIDC_CPRD
Data State
DEPRECATED
Number of Files/Granules
0
Processing Level
1B
Published
Updated
Science Keywords
ANTENNA TEMPERATURE ,
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

Piepmeier, J., Mohammed, P., Peng, J., Kim, E., De Amici, G., & Ruf, C. (2015). SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures, Version 2 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/VIQYQV0AJATI Date Accessed: 2026-09-13

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