GHRSST Level 3U Global Subskin Sea Surface Temperature version 8a from the Advanced Microwave Scanning Radiometer 2 on the GCOM-W satellite
Short NameAMSR2-REMSS-L3U-v8a
DescriptionGDS2 Version -The Advanced Microwave Scanning Radiometer 2 (AMSR2) was launched on 18 May 2012, onboard the Golbal Change Observation Mission - Water (GCOM-W) satellite developed by the Japan Aerospace Exploration Agency (JAXA). The GCOM-W mission aims to establish the global and long-term observation system to collect data, which is needed to understand mechanisms of climate and water cycle variations, and demonstrate its utilization. AMSR2 onboard the first generation of the GCOM-W satellite will continue Aqua/AMSR-E observations of water vapor, cloud liquid water, precipitation, SST, sea surface wind speed, sea ice concentration, snow depth, and soil moisture. AMSR2 is a remote sensing instrument for measuring weak microwave emission from the surface and the atmosphere of the Earth. From about 700 km above the Earth, AMSR2 will provide us highly accurate measurements of the intensity of microwave emission and scattering. The antenna of AMSR2 rotates once per 1.5 seconds and obtains data over a 1450 km swath. This conical scan mechanism enables AMSR2 to acquire a set of daytime and nighttime data with more than 99% coverage of the Earth every 2 days. Remote Sensing Systems (RSS, or REMSS), providers of these SST data for the Group for High Resolution Sea Surface Temperature (GHRSST) Project, performs a detailed processing of AMSR-E instrument data in two stages. The first stage produces a near-real-time (NRT) product (identified by "rt" within the file name) which is made as available as soon as possible. This is generally within 3 hours of when the data are recorded. Although suitable for many timely uses the NRT products are not intended to be archive quality. "Final" data (currently identified by "v8" within the file name) are processed when RSS receives the atmospheric mode NCEP FNL analysis. The NCEP wind directions are particularly useful for retrieving more accurate SSTs and wind speeds. The final "v8" products will continue to accumulate new swaths (half orbits) until the maps are full, generally within 2 days.
Dataset TypeACTIVE
Processing Level3U
CoverageNorth Bounding Coordinate: 90 degrees
South Bounding Coordinate: -90 degrees
West Bounding Coordinate: -179 degrees
East Bounding Coordinate: 180 degrees
Time Span: 2012-Jul-02 to Present
Granule Time Span: 2012-Jul-02 to 2020-Oct-25
ResolutionSpatial Resolution: 0.25 degrees (Latitude) x 0.25 degrees (Longitude)
Name: Global Change Observation Mission 1st - Water (SHIZUKU) (GCOM-W1)
Orbit Period: 100.0 minutes
Inclination Angle: 98.19 degrees
Name: Advanced Microwave Scanning Radiometer 2 (AMSR2)
Swath Width: 1450.0 meters
Description: Spacecraft angular distance from orbital plane relative to the Equator.

ProjectGroup for High Resolution Sea Surface Temperature (GHRSST)
Data ProviderPublisher: Remote Sensing Systems
Creator: Remote Sensing Systems
Release Place: Santa Rosa, CA, USA
Release Date: 2017-Nov-30
Keyword(s)GHRSST, sea surface temperature, L3U, SST, surface temperature, REMSS, AMSR, AMSR2, L3U, GDS2
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Citation Remote Sensing Systems. 2017. AMSR2 geolocated L3U SST data set. Ver. 8a. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at

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