National Oceanic and Atmospheric Administration, United States Department of Commerce

Search - JASON-ANC

Data Description

    Ocean Surface Topography Mission (OSTM)/Jason-2 and -3: Ancillary Files, 2008-present (NODC Accession 0044982 and 0122596) - The Ocean Surface Topography Mission (OSTM)/JASON-2 and JASON-3 are follow-on missions continuing the TOPEX/Poseidon and JASON-1, and were designed to ensure continuity of high quality measurements for ocean science and to provide operational products for assimilation and forecasting applications. The missions are joint effort by National Oceanic and Atmospheric Administration (NOAA), European Organization for the Exploitation of Meteorological Satellites (EUMETSAT), France’s Centre National d’Études Spatiales (CNES) and National Aeronautics and Space Administration (NASA). OSTM/Jason-2 was launched on 20 June 2008 and reached its nominal repetitive orbit on 4 July 2008. The start of cycle 1 occurred on 12 July 2008. The development of the JASON-3 mission, and related Ground Segment, is based on a recurrent JASON satellite and ground system with a similar partnership scheme to JASON-2. JASON-3 features the Poseidon-3B altimeter, developed by Thales Alenia Space in Toulouse. The JASON-3 satellite is planned to be launched in 2016. The satellite will be placed in the same orbit as JASON-2. The Jason-2/3 Ancillary data files are used to generate Level-2 products. They include both static tabular data files and dynamic files which change/grow over time. They are mission specific files used in the production of Level-2 products. All members of the Jason-2 Ancillary data family (J2-ANC) were made unrestricted on 15 December, 2008. Jason-2 Ancillary data are archived at the NOAA National Centers for Environmental Information (NCEI) as NODC accession number 0044982 ( Jason-3 Ancillary data will be archived at the NOAA National Centers for Environmental Information (NCEI) as NODC accession number 0122596 (

Details - Metadata, Documentation



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Jason AMR BT Average Coefficient Ancillary File
Jason AMR Main Beam BT Coefficient Ancillary File
Jason Char P3 Ancillary File From Primary Altimeter
Jason COR IONO GIM Aux File
Jason DORIS USO Drift Ancillary File From Primary Altimeter
Jason LTM Ancillary File From Primary Altimeter


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