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Description

This Level-3 (L3) soil moisture product provides a composite of daily estimates of global land surface conditions retrieved by the Soil Moisture Active Passive (SMAP) passive microwave radiometer. SMAP L-band soil moisture data are resampled to a global, cylindrical 36 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0).

Version Description

Changes to this version include: (1) Transitioned to Validated-Stage 2. (2) Uses updated SPL2SMP V3 Validated data as input version.

Product Summary

Platforms
SMAP
Instruments
SMAP L-BAND RADAR
Spatial Extent

N: 85.044 S: -85.044 E: 180 W: -180

Spatial Resolution
36 Kilometers x 36 Kilometers
Location
GLOBAL LAND
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2015-03-31 to 2016-12-06
Temporal Resolution
1 Day
Concept ID
C4112448279-NSIDC_CPRD
Data State
DEPRECATED
Number of Files/Granules
0
Processing Level
3
Published
Science Keywords
Brightness Temperature ,
Soil Moisture/Water Content

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

ONeill, P., Chan, S., Njoku, E., Jackson, T., & Bindlish, R. (2016). SMAP L3 Radiometer Global Daily 36 km EASE-Grid Soil Moisture, Version 3 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/7MINGFDCZTES Date Accessed: 2026-08-02

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
Partitioning of Historical Precipitation Into Evaporation and Runoff Akbar, Ruzbeh, Short Gianotti, Daniel J., Salvucci, Guido D., Entekhabi, Dara Brightness Temperature, Soil Moisture/Water Content
Effect of structural uncertainty in passive microwave soil moisture retrieval algorithm Karthikeyan, Lanka, Pan, Ming, Nagesh Kumar, Dasika, Wood, Eric F. Land Use/Land Cover Classification, Vegetation Index, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), Brightness Temperature, Soil Moisture/Water Content
SMAP radar receiver measures land surface freeze/thaw state through capture of forward-scattered L-band signals Chew, Clara, Lowe, Stephen, Parazoo, Nicholas, Esterhuizen, Stephan, Oveisgharan, Shadi, Podest, Erika, Zuffada, Cinzia, Freedman, Adam Freeze/Thaw, SIGMA NAUGHT, Transition Direction, Brightness Temperature, Soil Moisture/Water Content, Root Zone Soil Moisture, Surface Soil Moisture
SMAP observes flooding from land to sea: The Texas event of 2015 Fournier, S., Reager, J. T., Lee, T., VazquezCuervo, J., David, C. H., Gierach, M. M. Brightness Temperature, Soil Moisture/Water Content
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