We are in the process of migrating all NASA Earth science data sites into Earthdata from now until end of 2026. Not all NASA Earth science data and resources will appear here until then. Thank you for your patience as we make this transition.
Read about the Web Unification Project
SMAP Data Access and Tools
NASA's Soil Moisture Active Passive (SMAP) data products include information about soil moisture and freeze thaw state. Additional Level 4 value-added products are available. Data tools such as Vertex and Earthdata Search enable users to discover and download data.
Datasets
| Dataset | Instruments | Temporal Extent | Spatial Extent | Version | Data State | Data Format | Related Topics |
|---|---|---|---|---|---|---|---|
| SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture V009 | SMAP L-BAND RADIOMETER | 2015-03-31 to Present | N: 85.044 S: -85.044 E: 180 W: -180 | 009 | ACTIVE | HDF5 | Brightness Temperature, Surface Soil Moisture |
| SMAP Enhanced L3 Radiometer Global and Northern Hemisphere Daily 9 km EASE-Grid Freeze/Thaw State V004 | SMAP L-BAND RADIOMETER | 2015-03-31 to Present | N: 85.044 S: -85.044 E: 180 W: -180 | 004 | ACTIVE | HDF5 | Transition Direction |
| SMAP/CYGNSS EASE-Grid Soil Moisture V001 | DDMI, SMAP L-BAND RADIOMETER | 2017-04-01 to 2023-12-31 | N: 40 S: -40 E: 180 W: -180 | 1 | COMPLETE | HDF5 | Brightness Temperature, Surface Soil Moisture |
| SMAP L3 Radar/Radiometer Global Daily 9 km EASE-Grid Soil Moisture V003 | SMAP L-BAND RADAR, SMAP L-BAND RADIOMETER | 2015-04-13 to 2015-07-07 | N: 85.044 S: -85.044 E: 180 W: -180 | 003 | COMPLETE | HDF5 | Brightness Temperature, SIGMA NAUGHT, Soil Moisture/Water Content |
| SMAP Radar Twice-Daily SAR and SIR-Enhanced Scatterometer EASE-Grid 2.0 Radar Backscatter V001 | SMAP L-BAND RADAR | 2015-04-13 to 2015-07-12 | N: 90 S: -90 E: 180 W: -180 | 1 | COMPLETE | netCDF-4 | SIGMA NAUGHT |
| Soil Moisture Active Passive (SMAP) L1-L3 Ancillary Satellite Data V001 | NOT APPLICABLE | 2015-01-31 to Present | N: 86.4 S: -86.4 E: 180 W: -180 | 1 | ACTIVE | Binary | Attitude Characteristics, ORBITAL CHARACTERISTICS |
| SMAP L1A Radiometer Time-Ordered Parsed Telemetry V002 | SMAP L-BAND RADIOMETER | 2015-03-31 to Present | N: 86.4 S: -86.4 E: 180 W: -180 | 002 | ACTIVE | HDF5 | Sensor Counts |
| Near Real-time SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture V107 | SMAP L-BAND RADIOMETER | 2025-06-26 to Present | N: 85.044 S: -85.044 E: 180 W: -180 | 107 | ACTIVE | HDF5 | Brightness Temperature, Surface Soil Moisture |
| SMAP L4 Global Daily 9 km EASE-Grid Carbon Net Ecosystem Exchange V008 | MODIS, NOT APPLICABLE, SMAP L-BAND RADIOMETER, VIIRS | 2015-03-31 to Present | N: 85.044 S: -85.044 E: 180 W: -180 | 008 | ACTIVE | HDF5 | Gross Primary Production (gpp), Heterotrophic Respiration (rh), NET ECOSYSTEM CO2 EXCHANGE (NEE), SOIL ORGANIC CARBON (SOC) |
| SMAP L2 Radar/Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture V003 | SMAP L-BAND RADAR, SMAP L-BAND RADIOMETER | 2015-04-13 to 2015-07-07 | N: 85.044 S: -85.044 E: 180 W: -180 | 003 | COMPLETE | HDF5 | Brightness Temperature, SIGMA NAUGHT, Soil Moisture/Water Content |
SHOWING 10 OF 90
SMAP Data Tools
| Tool Sort descending | Description | Services | |
|---|---|---|---|
| HiTIDE | Use HiTIDE to subset and download popular Level 2 (swath) datasets. | Search and Discovery, Subsetting, Downloading | |
| SOTO | State of the Ocean (SOTO) is an interactive web-based tool that generates informative maps, animations, and plots that communicate and prove the discovery and analysis of the state of the oceans. | Analysis, Search and Discovery, Visualization | |
| Worldview | Worldview offers the capability to interactively browse over 1,200 global, full-resolution satellite imagery layers and download the underlying data. | Analysis, Search and Discovery, Visualization, Access, Comparison, Monitoring Natural Events |
SHOWING 3 OF 3
Frequently Asked Questions
Earthdata Forum
Our online forum provides a space for users to browse thousands of FAQs about research needs, data, and data applications. You can also submit new questions for our experts to answer.
Submit Questions to Earthdata Forumand View Expert Responses