Minimize Dataset Details
Earth Topics (Applications)
  • Land
  • Topography/Mapping

  • Snow and Ice
  • Sea Ice

  • Ocean and Coast
  • Ocean Currents and Topography

    Ocean Waves

  • Atmosphere
  • Winds

    Instrument type
    Instrument
  • RA2
  • Mission
    Operators:
    ESA
    Date of Launch:
    1 March 2002
    Mission Status:
    Out of service since May 2012 
    Orbit Height:
    800 km 
    Orbit type:
    Sun-synchronous 
    Swath Width:
    5 - 1150 km
    RA-2 Geophysical Data Record
    (ENVISAT.RA2.GDR_2P)
    ENVISAT
    (2108) recent views
    Last update: 05 July 2018

    This is a RA-2 Geophysical Data Record (GDR) Full Mission Reprocessing (FMR) v3 product containing radar range and orbital altitude, wind speed, wave height, water vapour from the MWR and geophysical corrections. This FMR follows the first Envisat Altimetry reprocessing Version (V2.1) completed in 2012.
    The GDR and S-GDR data products were reprocessed for all cycles from 6 to 113 (May 2002 to April 2012) into a homogeneous standard in NetCDF format (close to Sentinel-3).

    For many aspects, the V3.0 reprocessed data are better than the previous dataset:
    - In terms of available and valid data, the coverage is better, notably thanks to a better availability of MWR data at the beginning of the mission
    - In terms of performance at cross-overs, the quality is improved: the annual signal and average of Mean SSH is decreased, as well as the standard deviation
    - The new MWR characteristics were shown to improve largely the global quality of data. As well as the new tide model, the new MSS and the new orbit standard
    - The Global and regional Mean Sea Level trend is very weakly impacted though the effort was put, this time, on the mesoscale restitution, rather than long term drift, as during V2.1 reprocessing

    Please consult the Envisat RA-2/MWR Product Quality Readme file before using the data.

    Data Set Specifications
    Spatial coverage: 90 N, 90 S, 180 W, 180 E
    Temporal coverage: 2002-05-14 - 2012-04-08
    Processing level
    Level 2
    How to access this data

    Data from 14 May 2002 to 8 April 2012 is available online via FTP upon Registration

    Details on the V3.0 datasets can be found in the Envisat RA-2/MWR Products AvailabilityTable.

    Data from the previous reprocessing version (V2.1) are still available for users on the same FTP server for a limited period.

    Related news:

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

    10.5270/EN1-ajb696a

    Resources

    PDF

    RA-2 Product Handbook

    PDF

    Product Specifications

    PDF

    ReadMe file

    PDF

    Envisat Altimetry Error Budget

    HTML

    Further information related to RA2 Products and Quality