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 |
|---|---|---|---|---|---|---|---|
| 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 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update V008 | NOT APPLICABLE, SMAP L-BAND RADIOMETER | 2015-03-31 to Present | N: 85.044 S: -85.044 E: 180 W: -180 | 008 | ACTIVE | HDF5 | Root Zone Soil Moisture, Surface Soil Moisture |
| SMAP/In Situ Core Validation Site Land Surface Parameters Match-Up Data V001 | SOIL MOISTURE PROBE, SOIL TEMPERATURE PROBE, SMAP L-BAND RADAR, SMAP L-BAND RADIOMETER | 2015-04-01 to 2021-03-31 | N: 85.044 S: -85.044 E: 180 W: -180 | 1 | ACTIVE | ASCII | Soil Moisture/Water Content, Soil Temperature |
| SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture V006 | SMAP L-BAND RADIOMETER | 2015-03-31 to Present | N: 90 S: -85.044 E: 180 W: -180 | 006 | ACTIVE | HDF5 | Brightness Temperature, Surface Soil Moisture |
| SMAP L3 Radar Global Daily 3 km EASE-Grid Soil Moisture V003 | SMAP L-BAND RADAR | 2015-04-13 to 2015-07-07 | N: 85.044 S: -85.044 E: 180 W: -180 | 003 | COMPLETE | HDF5 | SIGMA NAUGHT, Soil Moisture/Water Content |
| SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures V006 | SMAP L-BAND RADIOMETER | 2015-03-31 to Present | N: 86.4 S: -86.4 E: 180 W: -180 | 006 | ACTIVE | HDF5 | Brightness Temperature |
| SMAP/SMOS L3 Radiometer 9 km EASE-Grid Soil Moisture V001 | SMAP L-BAND RADIOMETER, SMOS L-BAND RADIOMETER | 2015-05-01 to 2021-12-31 | N: 90 S: -90 E: 180 W: -180 | 1 | COMPLETE | HDF5 | Brightness Temperature, Surface Soil Moisture, Vegetation Optical Depth |
| Soil Moisture Active Passive (SMAP) CPEX | SMAP L-BAND RADAR | 2017-05-24 to 2017-07-16 | N: 41.524 S: 3.866 E: 180 W: -180 | 1 | COMPLETE | Soil Moisture/Water Content | |
| SMAP L3 Radiometer Global and Northern Hemisphere Daily 36 km EASE-Grid Freeze/Thaw State V004 | SMAP L-BAND RADIOMETER | 2015-03-31 to Present | N: 85.044 S: 45 E: 180 W: -180 | 004 | ACTIVE | HDF5 | Transition Direction |
| SMAP Radiometer Twice-Daily rSIR-Enhanced EASE-Grid 2.0 Brightness Temperatures V002 | SMAP L-BAND RADIOMETER | 2015-03-31 to 2022-12-31 | N: 90 S: -90 E: 180 W: -180 | 2 | COMPLETE | netCDF-4 | Brightness Temperature |
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