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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

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Dataset Instrument Temporal Extent Version Data State Data Format Science Keywords
ABoVE: Active Layer Thickness from Remote Sensing Permafrost Model, Alaska, 2001-2015 MODIS, SMAP L-BAND RADAR 2001-01-01 to 2015-12-31 1 COMPLETE netCDF-4 classic Active Layer, Freeze/Thaw, Permafrost, Soil Depth
JPL SMAP Level 2B CAP Sea Surface Salinity V5.0 Validated Dataset SMAP L-BAND RADIOMETER 2015-03-31 5.0 ACTIVE HDF5 Surface Winds, Salinity
JPL SMAP Level 2B Near Real-time CAP Sea Surface Salinity V5.0 Validated Dataset SMAP L-BAND RADIOMETER 2015-04-01 5.0 ACTIVE HDF5 Salinity
JPL SMAP Level 2B Near Real-time CAP Sea Surface Salinity V5.0 Validated Dataset (2 hour latency) SMAP L-BAND RADIOMETER 2015-04-01 5.0 ACTIVE HDF5 Salinity
JPL SMAP Level 3 CAP Sea Surface Salinity Standard Mapped Image 8-Day Running Mean V5.0 Validated Dataset SMAP L-BAND RADIOMETER 2015-04-30 5.0 ACTIVE netCDF-4 Salinity, Surface Winds
JPL SMAP Level 3 CAP Sea Surface Salinity Standard Mapped Image Monthly V5.0 Validated Dataset SMAP L-BAND RADIOMETER 2015-04-01 5.0 ACTIVE netCDF-4 Surface Winds, Salinity
Multi-Mission Optimally Interpolated Sea Surface Salinity Global Dataset V1 SMAP L-BAND RADIOMETER, AQUARIUS_SCATTEROMETER 2011-08-24 1.0 COMPLETE netCDF-4 Salinity
Multi-Mission Optimally Interpolated Sea Surface Salinity Global Dataset V2 SMAP L-BAND RADIOMETER, AQUARIUS_SCATTEROMETER 2011-08-24 2.0 COMPLETE netCDF-4 Salinity
Multi-Mission Optimally Interpolated Sea Surface Salinity Global Monthly Dataset V1 SMAP L-BAND RADIOMETER, AQUARIUS_SCATTEROMETER 2011-09-01 1.0 COMPLETE netCDF-4 Salinity, Ocean Surface Salinity
Multi-Mission Optimally Interpolated Sea Surface Salinity Global Monthly Dataset V2 SMAP L-BAND RADIOMETER, AQUARIUS_SCATTEROMETER 2011-08-01 2.0 COMPLETE netCDF-4 Salinity, Ocean Surface Salinity
MWOW 6-Hourly Global Ocean Wind Level 3 Version 0.1 ASCAT, SCAT-3, SMAP L-BAND RADIOMETER, KaRIn 2023-01-01 to 2027-08-31 0.1 ACTIVE netCDF-4 Wind Direction, Wind Speed
MWOW 6-Hourly Global Ocean Wind Level 3 Version 0.2 ASCAT, SCAT-3, SMAP L-BAND RADIOMETER, KaRIn 2023-01-01 to 2027-08-31 0.2 ACTIVE netCDF-4 Wind Direction, Wind Speed
MWOW 6-Hourly Global Ocean Wind with Expanded Platform Inputs Level 3 Version 0.1 ASCAT, SCAT-3, SMAP L-BAND RADIOMETER, KaRIn, SCATTEROMETERS 2023-01-01 to 2027-08-31 0.1 ACTIVE netCDF-4 Wind Direction, Wind Speed
MWOW 6-Hourly Global Ocean Wind with Expanded Platform Inputs Level 3 Version 0.2 ASCAT, SCAT-3, SMAP L-BAND RADIOMETER, KaRIn, SCATTEROMETERS 2023-01-01 to 2027-08-31 0.2 ACTIVE netCDF-4 Wind Direction, Wind Speed
MWOW 6-Hourly High Resolution Global Ocean Wind Level 3 Version 0.1 ASCAT, SCAT-3, SMAP L-BAND RADIOMETER, KaRIn 2023-01-01 to 2027-08-31 0.1 ACTIVE netCDF-4 Wind Direction, Wind Speed
MWOW 6-Hourly High Resolution Global Ocean Wind Level 3 Version 0.2 ASCAT, SCAT-3, SMAP L-BAND RADIOMETER, KaRIn 2023-01-01 to 2027-08-31 0.2 ACTIVE netCDF-4 Wind Direction, Wind Speed
MWOW 6-Hourly High Resolution Global Ocean Wind with Expanded Platform Inputs Level 3 Version 0.1 ASCAT, SCAT-3, SMAP L-BAND RADIOMETER, KaRIn, SCATTEROMETERS 2023-01-01 to 2027-08-31 0.1 ACTIVE netCDF-4 Wind Direction, Wind Speed
MWOW 6-Hourly High Resolution Global Ocean Wind with Expanded Platform Inputs Level 3 Version 0.2 ASCAT, SCAT-3, SMAP L-BAND RADIOMETER, KaRIn, SCATTEROMETERS 2023-01-01 to 2027-08-31 0.2 ACTIVE netCDF-4 Wind Direction, Wind Speed
Near Real-time SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures V105 SMAP L-BAND RADIOMETER 2025-06-26 to Present 105 ACTIVE HDF5 ANTENNA TEMPERATURE, Brightness Temperature
Near Real-time SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture V107 SMAP L-BAND RADIOMETER 2025-06-26 to Present 107 ACTIVE HDF5 Brightness Temperature, Surface Soil Moisture
Parametrized Rain Impact Model for SMAP L2 V1.0 SMAP L-BAND RADIOMETER 2015-03-31 to 2021-10-01 1.0 ACTIVE netCDF4 Salinity, Wind Speed, RAIN
Probabilistic Freeze-Thaw Record for the Northern Hemisphere, 2016-2020 SMAP L-BAND RADIOMETER, AMSR2 2016-01-01 to 2020-12-31 1 COMPLETE COG Seasonally Frozen Ground, Seasonally Frozen Ground
RSS SMAP Level 2C Sea Surface Salinity NRT V5.0 Validated Dataset SMAP L-BAND RADIOMETER 2022-07-28 5.0 ACTIVE netCDF-4 Salinity
RSS SMAP Level 2C Sea Surface Salinity NRT V6.0 Validated Dataset SMAP L-BAND RADIOMETER 2022-07-28 6.0 ACTIVE netCDF-4 Salinity
RSS SMAP Level 2C Sea Surface Salinity V6.0 Validated Dataset SMAP L-BAND RADIOMETER 2015-04-01 6.0 ACTIVE netCDF-4 Salinity
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SMAP Data Tools

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Tool 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
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