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Description

This data product contains global daily 1 km resolution surface soil moisture derived from the SMAP L-band radiometer. Specifically, MODIS land surface temperature data is used with the SMAP Enhanced L2radiometer Half-Orbit 9 km EASE-Grid Soil Moisture product in a downscaling algorithm to estimate soil moisture. The data set is validated by in situ soil moisture measurements from dense soil moisture networks representing different global land cover types.

Product Summary

Platforms
SMAP
Instruments
SMAP L-BAND RADIOMETER
Spatial Extent

N: 86 S: -86 E: 180 W: -180

Spatial Resolution
1 Kilometers x 1 Kilometers
Geographic Region
GLOBAL LAND
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2015-04-01 to 2024-06-29
Concept ID
C3177836984-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
3370
Processing Level
3
Science Keywords
Surface Soil Moisture

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

Lakshmi, V., & Fang, B. (2023). SMAP-Derived 1-km Downscaled Surface Soil Moisture Product, Version 1 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/U8QZ2AXE5V7B Date Accessed: 2025-12-14

Documents

USER'S GUIDE

GENERAL DOCUMENTATION