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osisafFor complementing its Central Facilities capability in Darmstadt and taking more benefit from specialized expertise in Member States, EUMETSAT created Satellite Application Facilities (SAFs), based on co-operation between several institutes and hosted by a National Meteorological Service. The Ocean and Sea Ice Satellite Application Facility (OSI SAF) is an answer to the common requirements of meteorology and oceanography for a comprehensive information on the ocean-atmosphere interface. One of the objectives of the OSI SAF is to produce, control and distribute operationally in near real-time OSI SAF products using available satellite data with the necessary Users Support activities. CERSAT is the dissemination center for OSI SAF sea surface temperature and radiative fluxes products.

CERSAT is a partner of O&SI SAF together with the Centre de Meteorologie Spatiale of Meteo-France (CMS), MetNo, DMI and KNMI. Its role is to distribute in near-real time the sea surface temperature and radiative fluxes products generated by CMS to the user community. This includes products generated both from polar orbiting and geostationary satellites.

All data are accessible through various ways :

  • FTP
  • OpenDAP
  • Naiad for finer selection. Check also this useful command line tool to select your files of interest with respect to a chosen area and time frame of interest.

The complete catalogue of OSI SAF products available at CERSAT can be browsed here. Product description and access details are provided for each item.


  Access to OSI SAF products is free and unrestricted. However users must be registered in order to track product usage. Registration is to be requested to OSI SAF help desk, a login and password is then provided to you for FTP access.

These data are freely available on FTP ( However (simple!) registration is required to keep track of the usage of these products.
To get immediate access, please Click here

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