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SMMR Data Access and Tools

Data from NASA’s Scanning Multichannel Microwave Radiometer (SMMR) provides foundational measurements of sea surface temperatures, ocean wind speeds, and atmospheric water vapor. Explore SMMR datasets and relevant data tools.

Datasets

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Dataset Temporal Extent Version Data State Processing Level Data Format Science Keywords
MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status V005 1979-01-01 to 2023-12-31 5 COMPLETE 3 HDF5, GIF, GeoTIFF Freeze/Thaw
ABoVE: Passive Microwave-derived Annual Snowpack Main Melt Onset Date Maps, 1988-2023 1988-02-09 to 2023-07-20 1.0 COMPLETE 3 multiple Snow Melt, Snow Melt, Surface Melt, Snow Melt
ISLSCP II Global Sea Ice Concentration 1986-01-01 to 1995-12-31 1 COMPLETE 3 Shapefile Sea Ice Concentration, Sea Ice Concentration, Sea Ice Concentration, Ice Extent
LBA-ECO LC-07 Monthly Inundated Areas, Amazon, Orinoco and Pantanal Basins: 1978-1987 1978-12-01 to 1987-08-31 1 COMPLETE 3 multiple Land Use/Land Cover Classification, Discharge/Flow, Floods, Inundation
LBA-ECO LC-07 Monthly Mean Flooded Wetlands Habitat, Central Amazon Basin: 1979-1996 1979-01-01 to 1996-06-30 1 COMPLETE 3 CSV Land Use Classes, Floods, Inundation, Wetlands
ABoVE: Passive Microwave-derived Annual Snow Melt Duration Date Maps, 1988-2018 1988-02-09 to 2018-07-20 1.1 COMPLETE 3 multiple Snow Cover, Snow Melt, Snow Cover, Snow Melt, Snow Melt
MEaSUREs Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR V001 1978-10-25 to 2025-09-30 1 DEPRECATED 3 netCDF-4 Brightness Temperature
NASA MEASURES Precipitation Ensemble based on SMMR Nimbus-7 NSIDC L1B Tbs 1-orbit L2 Swath 25x25km V1 (PRECIP_SMMR_NIMBUS7) 1979-01-02 to 1987-08-20 1 COMPLETE 2 Precipitation Rate
SMMR/Nimbus-7 Color Images V001 (SMMRN7IM) 1978-10-30 to 1983-11-02 001 COMPLETE 3 Total Precipitable Water, Water Vapor, Sea Ice Concentration, Ice Fraction, Sea Surface Temperature, Surface Winds, Ice Temperature, Sea Ice Concentration, Brightness Temperature
Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS V003 1978-11-01 to 2022-12-31 3 DEPRECATED 3 Binary Sea Ice Concentration
Scanning Multichannel Microwave Radiometer (SMMR) Monthly Mean Integrated Water Vapor (IWV) By Prabhakara 1979-01-01 to 1983-09-30 1 COMPLETE 3 Binary Water Vapor, Humidity
Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data V001 1978-10-26 to 2021-12-31 1 DEPRECATED 3 PNG, Binary Sea Ice Concentration
Scanning Multichannel Microwave Radiometer (SMMR) Monthly Mean Atmospheric Liquid Water (ALW) By Prabhakara 1979-02-01 to 1984-05-31 1 COMPLETE 3 ASCII Water Vapor, Humidity
MEaSUREs Arctic Sea Ice Characterization Daily 25km EASE-Grid 2.0 V001 1979-01-01 to 2012-12-31 1 COMPLETE 3 netCDF-4 Ice Extent, Sea Ice Age, Snow Melt
MEaSUREs Greenland Surface Melt Daily 25km EASE-Grid 2.0 V001 1979-01-02 to 2012-12-31 1 COMPLETE 3 netCDF-4 Snow Melt, Snow Melt
MEaSUREs Northern Hemisphere State of Cryosphere Weekly 100km EASE-Grid 2.0 V001 1979-01-02 to 2012-12-31 1 COMPLETE 3 netCDF-4 Ice Extent, Snow Cover, Snow Melt
MEaSUREs Northern Hemisphere Terrestrial Snow Cover Extent Weekly 100km EASE-Grid 2.0 V001 1966-10-04 to 2012-12-31 1 COMPLETE 3 netCDF-4 Snow Cover, Snow Cover
NIMBUS-7 SMMR GLOBAL AIR-SEA PARAMETERS IN SWATH (Wentz) 1979-11-01 to 1984-09-30 1 COMPLETE 2 RAW Surface Winds
MEaSUREs Global Record of Daily Landscape Freeze/Thaw Status V004 2017-01-01 to 2017-12-31 4 DEPRECATED 3 GIF, HDF5, GeoTIFF Freeze/Thaw
Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS V004 1978-11-01 to 2025-12-31 4 ACTIVE 3 netCDF-4 Sea Ice Concentration
Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data V002 1978-10-26 to 2025-12-31 2 COMPLETE 3 PNG, netCDF-4 Sea Ice Concentration
Nimbus-7 SMMR Pathfinder Daily EASE-Grid Brightness Temperatures V001 1978-10-25 to 1987-08-20 1 COMPLETE 3 Binary Brightness Temperature
Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR V002 1978-10-25 to Present 2 ACTIVE 3 netCDF-4 Brightness Temperature
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