SMAP Data

The following table lists SMAP science data that are available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Related data are also provided on this page.

Standard Data Sets

Title Spatial Coverage Temporal Coverage Spatial Resolution Temporal Resolution Parameter(s)

SMAP L1A Radiometer Time-Ordered Parsed Telemetry, Version 2 (SPL1AP)

N: 86.4, S: -86.4, E: 180, W: -180 2015/03/31 40 km x 40 km 49 minute Instrument Counts

SMAP L1B Radiometer Half-Orbit Time-Ordered Brightness Temperatures, Version 3 (SPL1BTB)

N: 86.4, S: -86.4, E: 180, W: -180 2015/03/31 47 km x 36 km 49 minute Antenna Temperature, Brightness Temperature

SMAP L1C Radiometer Half-Orbit 36 km EASE-Grid Brightness Temperatures, Version 3 (SPL1CTB)

N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 36 km x 36 km 49 minute Brightness Temperature

SMAP L2 Radar Half-Orbit 3 km EASE-Grid Soil Moisture, Version 3 (SPL2SMA)

N: 85.044, S: -85.044, E: 180, W: -180
2015/04/13 to 2015/07/07
3 km x 3 km 49 minute Sigma Nought, Soil Moisture

SMAP L2 Radar/Radiometer Half-Orbit 9 km EASE-Grid Soil Moisture, Version 3 (SPL2SMAP)

N: 85.044, S: -85.044, E: 180, W: -180
2015/04/13 to 2015/07/07
9 km x 9 km 49 minute Brightness Temperature, Sigma Nought, Soil Moisture

SMAP L2 Radiometer Half-Orbit 36 km EASE-Grid Soil Moisture, Version 3 (SPL2SMP)

N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 36 km x 36 km 49 minute Brightness Temperature, Soil Moisture

SMAP L3 Radar Northern Hemisphere Daily 3 km EASE-Grid Freeze/Thaw State, Version 3 (SPL3FTA)

N: 85.044, S: 45, E: 180, W: -180
2015/04/13 to 2015/07/07
3 km x 3 km 1 day Freeze/Thaw State, Sigma Nought, Transition Direction

SMAP L3 Radar Global Daily 3 km EASE-Grid Soil Moisture, Version 3 (SPL3SMA)

N: 85.044, S: -85.044, E: 180, W: -180
2015/04/13 to 2015/07/07
3 km x 3 km 1 day Sigma Nought, Soil Moisture

SMAP L3 Radar/Radiometer Global Daily 9 km EASE-Grid Soil Moisture, Version 3 (SPL3SMAP)

N: 85.044, S: -85.044, E: 180, W: -180
2015/04/13 to 2015/07/07
9 km x 9 km 1 day Brightness Temperature, Sigma Nought, Soil Moisture

SMAP L3 Radiometer Global Daily 36 km EASE-Grid Soil Moisture, Version 3 (SPL3SMP)

N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 36 km x 36 km 1 day Brightness Temperature, Soil Moisture

SMAP L4 Global Daily 9 km Carbon Net Ecosystem Exchange, Version 2 (SPL4CMDL)

N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km x 9 km 1 day Gross Primary Productivity (GPP), Heterotrophic Respiration (Rh), Net Ecosystem CO2 Exchange (NEE), Soil Organic Carbon (SOC)

SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update, Version 2 (SPL4SMAU)

N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km x 9 km 3 hour Root Zone Soil Moisture, Surface Soil Moisture

SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Geophysical Data, Version 2 (SPL4SMGP)

N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km x 9 km 3 hour Root Zone Soil Moisture, Surface Soil Moisture

SMAP L4 9 km EASE-Grid Surface and Root Zone Soil Moisture Land Model Constants, Version 2 (SPL4SMLM)

N: 85.044, S: -85.044, E: 180, W: -180 2015/03/31 9 km x 9 km 3 hour Soil Classification, Soil Depth, Soil Porosity, Soil Texture, Terrain Elevation

Related Data Sets

Title Spatial Coverage Temporal Coverage Spatial Resolution Temporal Resolution Parameter(s)

AMSR-E/Aqua L2B Surface Soil Moisture, Ancillary Parms, & QC EASE-Grids, Version 2 (AE_Land)

N: 89.24, S: -89.24, E: 180, W: -180
2002/06/18 to 2011/10/03
25 km x 25 km 50 minute Soil Moisture/Water Content, Vegetation Water Content

AMSR-E/Aqua Daily L3 Surface Soil Moisture, Interpretive Parameters, & QC EASE-Grids, Version 2 (AE_Land3)

N: 89.24, S: -89.24, E: 180, W: -180
2002/06/19 to 2011/10/03
25 km x 25 km 1 day Brightness Temperature, Microwave Imagery, Soil Moisture/Water Content, Vegetation Water Content

Aquarius L3 Gridded 1-Degree Annual Soil Moisture, Version 4 (AQ3_ANSM)

N: 90, S: -90, E: 180, W: -180
2011/08/25 to 2015/06/07
1 Degree x 1 Degree 12 month Soil Moisture/Water Content

Aquarius L3 Gridded 1-Degree Daily Soil Moisture, Version 4 (AQ3_DYSM)

N: 90, S: -90, E: 180, W: -180
2011/08/25 to 2015/06/07
1 Degree x 1 Degree 1 day Soil Moisture/Water Content

Aquarius L3 Gridded 1-Degree Monthly Soil Moisture, Version 4 (AQ3_MOSM)

N: 90, S: -90, E: 180, W: -180
2011/08/25 to 2015/06/07
1 Degree x 1 Degree 1 month Soil Moisture/Water Content

Aquarius L3 Gridded 1-Degree Seasonal Soil Moisture, Version 4 (AQ3_SNSM)

N: 90, S: -90, E: 180, W: -180
2011/08/25 to 2015/06/07
1 Degree x 1 Degree 3 month Soil Moisture/Water Content

Aquarius L3 Gridded 1-Degree Weekly Soil Moisture, Version 4 (AQ3_WKSM)

N: 90, S: -90, E: 180, W: -180
2011/08/25 to 2015/06/07
1 Degree x 1 Degree 7 day Soil Moisture/Water Content

Related Data Collections

Data Sets and Collections Details and Data
International Soil Moisture Network (ISMN) More Details | Get Data *
Soil Moisture Ocean Salinity (SMOS) Mission More Details | Get Data *
* NSIDC does not archive this data set or collection.