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Description

This Level-3 (L3) soil moisture product provides a daily composite of global land surface conditions retrieved by both the Soil Moisture Active Passive (SMAP) radar and radiometer. SMAP L-band soil moisture data are resampled to an Earth-fixed, global, cylindrical 9 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0).

Version Description

Changes to this version include:
  • Transitioned to Validated-Stage 2
  • Using SPL2SMAP V3 Validated data as input
For the full major and minor version history, go to https://nsidc.org/data/smap/version-history

Product Summary

Platforms
SMAP
Instruments
SMAP L-BAND RADAR ,
SMAP L-BAND RADIOMETER
Spatial Extent

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

Spatial Resolution
9 Kilometers x 9 Kilometers
Spatial Reference System(s)
WGS 84 / NSIDC EASE-Grid 2.0 Global (EPSG:6933)
Location
GLOBAL LAND
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2015-04-13 to 2015-07-07
Temporal Resolution
1 Day
Concept ID
C2872767144-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
84
Processing Level
3
Published
Science Keywords
Brightness Temperature ,
SIGMA NAUGHT ,
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

Entekhabi, D., Das, N., Njoku, E., Johnson, J., & Shi, J. (2016). SMAP L3 Radar/Radiometer Global Daily 9 km EASE-Grid Soil Moisture, Version 3 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/7KKNQ5UURM2W Date Accessed: 2026-08-31

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
Effects of meteorological forcings and land surface model on soil moisture simulation over China Zeng, Junhan, Yuan, Xing, Ji, Peng, Shi, Chunxiang Soil Moisture
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