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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
RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image Monthly V4.0 Validated Dataset SMAP L-BAND RADIOMETER 2015-04-01 4.0 ACTIVE netCDF-4 Salinity
RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image Monthly V5.0 Validated Dataset SMAP L-BAND RADIOMETER 2015-04-01 5.0 ACTIVE netCDF-4 Salinity
RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image Monthly V5.3 Evaluation Dataset SMAP L-BAND RADIOMETER 2015-04-01 to 2024-01-01 5.3 COMPLETE netCDF-4 Salinity
RSS SMAP Level 3 Sea Surface Salinity Standard Mapped Image Monthly V6.0 Validated Dataset SMAP L-BAND RADIOMETER 2015-04-01 6.0 ACTIVE netCDF-4 Salinity
SMAP Enhanced L1C Radiometer Half-Orbit 9 km EASE-Grid Brightness Temperatures V004 SMAP L-BAND RADIOMETER 2015-03-31 to Present 004 ACTIVE HDF5 Brightness Temperature
SMAP Enhanced L2 Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture V006 SMAP L-BAND RADIOMETER 2015-03-31 to Present 006 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 004 ACTIVE HDF5 Transition Direction
SMAP Enhanced L3 Radiometer Global and Polar Grid Daily 9 km EASE-Grid Soil Moisture V006 SMAP L-BAND RADIOMETER 2015-03-31 to Present 006 ACTIVE HDF5 Brightness Temperature, Surface Soil Moisture
SMAP L1A Radiometer Time-Ordered Parsed Telemetry V002 SMAP L-BAND RADIOMETER 2015-03-31 to Present 002 ACTIVE HDF5 Sensor Counts
SMAP L1B Radiometer Half-Orbit Radio Frequency Interference and Calibration Data V006 SMAP L-BAND RADIOMETER 2015-03-31 to Present 006 ACTIVE HDF5 ANTENNA TEMPERATURE
SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures V006 SMAP L-BAND RADIOMETER 2015-03-31 to Present 006 ACTIVE HDF5 Brightness Temperature
SMAP L1C Radiometer Half-Orbit 36 km EASE-Grid Brightness Temperatures V006 SMAP L-BAND RADIOMETER 2015-03-31 to Present 006 ACTIVE HDF5 Brightness Temperature
SMAP L2 Radar Half-Orbit 3 km EASE-Grid Soil Moisture V003 SMAP L-BAND RADAR 2015-04-13 to 2015-07-07 003 COMPLETE HDF5 SIGMA NAUGHT, Soil Moisture/Water Content
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 2015-07-07 003 COMPLETE HDF5 Brightness Temperature, SIGMA NAUGHT, Soil Moisture/Water Content
SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture V009 SMAP L-BAND RADIOMETER 2015-03-31 to Present 009 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 2015-07-07 003 COMPLETE HDF5 SIGMA NAUGHT, Soil Moisture/Water Content
SMAP L3 Radar Northern Hemisphere Daily 3 km EASE-Grid Freeze/Thaw State V003 SMAP L-BAND RADAR 2015-04-13 to 2015-07-07 003 COMPLETE HDF5 Freeze/Thaw, SIGMA NAUGHT, Transition Direction
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 2015-07-07 003 COMPLETE HDF5 Brightness Temperature, SIGMA NAUGHT, 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 004 ACTIVE HDF5 Transition Direction
SMAP L3 Radiometer Global Daily 36 km EASE-Grid Soil Moisture V009 SMAP L-BAND RADIOMETER 2015-03-31 to Present 009 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 008 ACTIVE HDF5 Root Zone Soil Moisture, Surface Soil Moisture
SMAP L4 Global 3-hourly 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data V008 NOT APPLICABLE, SMAP L-BAND RADIOMETER 2015-03-31 to Present 008 ACTIVE HDF5 Root Zone Soil Moisture, Surface Soil Moisture
SMAP L4 Global 9 km EASE-Grid Surface and Root Zone Soil Moisture Land Model Constants V008 NOT APPLICABLE, SMAP L-BAND RADIOMETER 2015-03-31 to Present 008 ACTIVE HDF5 Soil Classification, Soil Depth, Soil Porosity, Soil Texture, Terrain Elevation
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 008 ACTIVE HDF5 Gross Primary Production (gpp), Heterotrophic Respiration (rh), NET ECOSYSTEM CO2 EXCHANGE (NEE), Soil Organic Carbon (SOC)
SMAP Level 1A Radar Telemetry Product (Version 1) SAR 2015-02-12 to 2021-11-04 1 COMPLETE Soil Moisture/Water Content, ORBITAL CHARACTERISTICS, RADAR IMAGERY, SIGMA NAUGHT
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