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Earth Topics (Applications)
  • Agriculture
  • Forestry

  • Snow and Ice
  • Sea Ice

  • Natural Disasters
  • Fire


  • Ocean and Coast
  • Sea Surface Temperature

  • Atmosphere
  • Clouds/Precipitation

    Instrument type
    Date of Launch:
    ERS-1 - 17 July 1991
    ERS-2 - 21 April 1995
    Mission Status:
    ERS-1 ended on March 2000 and ERS-2 September 2011 
    Orbit Height:
    782 to 785 km
    Orbit type:
    Near-circular, polar, Sun-synchronous
    Swath Width:
    5 km
    ATSR Averaged Surface Temperature
    (3091) recent views
    Last update: 4 December 2013

    The Averaged Surface Temperature Product (AST) contains averaged geophysical data at two different resolutions, and with respect to two different averaging schemes: measurement data sets at resolutions of 0.5 by 0.5 degrees and 10 by 10 arcmin with respect to a latitude/longitude grid; other data sets contain data averaged over equal area cells of 50 by 50 km and 17 by 17 km aligned with the satellite ground track.

    Both top-of-atmosphere and surface data sets are provided. The surface temperature data sets provide, for sea cells, nadir and dual view sea surface temperatures, and for land cells, land surface temperature (currently 11 micron BT) and NDVI. Cloud data is also included. No ADS are included in the AST product; auxiliary data is contained within the MDS. The data sets of the AST product are arranged by surface type and resolution.

    The 3rd reprocessing of ATSR data has been performed; the processing updates that have been put in place and the expected scientific improvements are outlined in full in the User Note for the Third ERS ATSR Reprocessing.

    Data Set Specifications
    Spatial coverage: 90 N, 90 S, 180 W, 180 E
    Temporal coverage: 1991-08-01 - 1997-12-17 (ATSR-1)
    Temporal coverage: 1995-06-01 - 2003-06-22 (ATSR-2)
    Processing level
    Level 2
    How to access this data

    Reprocessed data
    The complete ERS ATSR-1 and ERS ATSR-2 3rd reprocessing archive is available online (FTP access) upon registration.

    See related news on the ERS-1/2 ATSR 3rd reprocessing of 13 December 2013.

    Terms & Conditions applicable
    Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions


    The ATSR Project at the Rutherford Appleton Laboratory


    More ATSR Documents