SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data V008

OpenL4Data productPassive microwaveSoilsHydrology

Surface and root-zone soil moisture estimates from assimilation of SMAP brightness temperatures into a land-surface model, posted every three hours to a 9 km grid. This is an analysis product rather than a direct root-zone measurement or a weather forecast. Grid spacing is distinct from the instrument footprint; quality and uncertainty information apply.

SMAP

Access

Open data, retrieved directly from the source under its licence.

Access endpoints

https
https://search.earthdata.nasa.gov/
Preferred NASA publisher discovery. Public metadata does not bypass Earthdata authentication for data downloads.
stac-api
https://cmr.earthdata.nasa.gov/stac/NSIDC_CPRD
SPL4SMGP_008 · Verified native publisher collection on 2026-10-02. Native metadata license: CC0-1.0. Product-specific licensing, citation and quality requirements apply. Granule footprints identify artifacts, not every observation location within assets. Follow continuation pages for the complete requested search.

Licence

Provider terms of use

Free access under the provider's own terms of use; check them for redistribution and commercial use.

open: falseattribution: truecommercial use: false

Harmonized Landsat Sentinel-2 (HLS v2)MODIS Terra Daily Surface Reflectance (MOD09GA)VIIRS Black Marble Night Lights (VNP46)FIRMS Active Fire Detections GEDI L2A Elevation and Height Metrics ICESat-2 ATL03 Geolocated Photons

Machine view

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SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data V008

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Machine view