SMAP Ancillary Data

The following table lists the ancillary data sets that are used by SMAP algorithms to produce the SMAP science data products. The Level 1-3 ancillary data sets are used to create the SMAP L1, L2, and L3 products; the Level 4 ancillary data sets are used to create the SMAP L4 products. These ancillary data sets are made available as part of NSIDC DAAC’s mandate to preserve all SMAP data and related information for future research, per the NASA Earth Science Data Preservation Content Specification. Several of these ancillary data sets are produced by external organizations, such as NOAA, the NASA Global Modeling and Assimilation Office (GMAO), and NASA Land Data Assimilation Systems (LDAS). For more information about the creation and development of these data sets, users should refer to the originating institution.

Level 1-Level 3

Title Parameter(s)
Soil Moisture Active Passive (SMAP) L1-L3 Ancillary GEOS Data, Version 1 Precipitation, Surface Air Temperature
Soil Moisture Active Passive (SMAP) L1-L3 Ancillary NOAA Data, Version 1 ICE FRACTION, SEA SURFACE TEMPERATURE, SIGNIFICANT WAVE HEIGHT, SNOW COVER, SOLAR RADIO WAVE EMISSIONS
Soil Moisture Active Passive (SMAP) L1-L3 Ancillary Satellite Data, Version 1 ATTITUDE CHARACTERISTICS, ORBITAL CHARACTERISTICS
Soil Moisture Active Passive (SMAP) L1-L3 Ancillary Static Data, Version 1 DIGITAL ELEVATION/TERRAIN MODEL (DEM), Land Cover Classification, NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI), SOIL CLASSIFICATION, SOIL TEXTURE, SURFACE ROUGHNESS

Level 4

Title Parameter(s)
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary Biome Parameter Look Up Table, Version 1 Land Cover Classification, Respiration, Temperature, VAPOR PRESSURE
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary FPAR Climatology, Version 1 FRACTION OF ABSORBED PHOTOSYNTHETICALLY ACTIVE RADIATION (FAPAR), LEAF AREA INDEX (LAI)
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary Meteorology Preprocessor Output Log Files, Version 1 MODEL LOGS
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary Meteorology Preprocessor Run Time Input Parameters, Version 1 MODEL LOGS
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary Model Output Log Files, Version 1 MODEL LOGS
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary Model Run Time Input Parameters, Version 1 MODEL LOGS
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary MODIS FPAR Preprocessor Output Log Files, Version 1 MODEL LOGS
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary MODIS Preprocessor Run Time Input Parameters, Version 1 MODEL LOGS
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary Parameters, Version 1 Land Cover
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary Soil Organic Carbon Restart File, Version 1 Soil Organic Carbon (SOC)
Soil Moisture Active Passive (SMAP) L4 Carbon Ancillary Surface Meteorological Forcing Data, Version 1 24 HOUR MINIMUM TEMPERATURE, Shortwave Radiation, VAPOR PRESSURE
Soil Moisture Active Passive (SMAP) L4 Soil Moisture Ancillary Catchment Model Tile Space, Version 1 GEOLOCATION
Soil Moisture Active Passive (SMAP) L4 Soil Moisture Ancillary Climatology Files, Version 1 SOIL MOISTURE
Soil Moisture Active Passive (SMAP) L4 Soil Moisture Ancillary LDAS Parameters Files, Version 1 BRIGHTNESS TEMPERATURE, SOIL TEXTURE
Soil Moisture Active Passive (SMAP) L4 Soil Moisture Ancillary Output Log Files, Version 1 MODEL LOGS
Soil Moisture Active Passive (SMAP) L4 Soil Moisture Ancillary Restart Files, Version 1 SNOW, SOIL MOISTURE, SOIL TEMPERATURE
Soil Moisture Active Passive (SMAP) L4 Soil Moisture Ancillary Run Time Input Parameters, Version 1 MODEL LOGS