SMAP/Sentinel-1 L2 Radiometer/Radar 30-Second Scene 3 km EASE-Grid Soil Moisture V003

This Level-2 (L2) soil moisture product provides estimates of land surface conditions retrieved by both the Soil Moisture Active Passive (SMAP) radiometer during 6:00 a.m. descending and 6:00 p.m. ascending half-orbit passes and the Sentinel-1A and -1B radar. SMAP L-band brightness temperatures and Copernicus Sentinel-1 C-band backscatter coefficients are used to derive soil moisture data, which are then resampled to an Earth-fixed, cylindrical 3 km Equal-Area Scalable Earth Grid, Version 2.0 (EASE-Grid 2.0). While the 3 km data product has undergone validation, the 1 km product has not and should be used with caution.

Data and Resources

Google Scholar search resultsHTML
Search results for publications that cite this dataset by its DOI.
Explore
- More information
- Go to resource
Download this datasetHTML
Direct download via HTTPS protocol.
Explore
- More information
- Go to resource
Download this dataset through Earthdata SearchHTML
NASA's newest search and order tool for subsetting, reprojecting, and...
Explore
- More information
- Go to resource
Download this datasetHTML
Search and filter data files using a map-based interface
Explore
- More information
- Go to resource
Get a related visualization through WORLDVIEWHTML
This application allows you to interactively browse global satellite imagery...
Explore
- More information
- Go to resource
View documentation related to this datasetHTML
Includes a user's guide, supplemental documents like ATBDs and academic...
Explore
- More information
- Go to resource

Additional Info

Field	Value
Maintainer	NSIDC Services
Last Updated	July 17, 2025, 15:53 (UTC)
Created	March 31, 2025, 19:37 (UTC)
accessLevel	public
bureauCode	{026:00}
catalog_@context	https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id	https://data.nasa.gov/data.json
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy	https://project-open-data.cio.gov/v1.1/schema/catalog.json
citation	SMAP/Sentinel-1 L2 Radiometer/Radar 30-Second Scene 3 km EASE-Grid Soil Moisture V003. Version 003. Archived by National Aeronautics and Space Administration, U.S. Government, NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ASB0EQO2LYJV.
graphic-preview-description	This application allows you to interactively browse global satellite imagery within hours of it being acquired. You can also save it, share it, and download the underlying data.
graphic-preview-file	https://worldview.earthdata.nasa.gov/?v=-198,-80,167,89&l=SMAP_Sentinel-1_L2_Active_Passive_Soil_Moisture,Coastlines_15m,MODIS_Terra_CorrectedReflectance_TrueColor
harvest_object_id	bc051fb4-00f4-4828-80ec-d3743d67ef00
harvest_source_id	61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title	DNG Legacy Data
identifier	C1931663473-NSIDC_ECS
issued	2015-03-31
landingPage	https://doi.org/10.5067/ASB0EQO2LYJV
language	{en-US}
metadata_type	geospatial
modified	2025-03-17
programCode	{026:001}
publisher	NASA NSIDC DAAC
resource-type	Dataset
source_datajson_identifier	true
source_hash	47b5db1f0bdc2e0f9ae21c0bc2d9e9b73ed5182ebacddadd054011fccf0ca952
source_schema_version	1.1
spatial	-180.0 -60.0 180.0 60.0
temporal	2015-03-31T00:00:00Z/2025-03-24T00:00:00Z
theme	{geospatial}