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The page will be updated as required. It was last changed on 0819.1101.20172018

For a record of changes made to this page please refer to  Document versions.

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We acknowledge the contribution of the Copernicus Climate Change Service (C3S) in the production of SEAS5. C3S provided the computer time for the generation of the re-forecasts for SEAS5 and for the production of the ocean reanalysis (ORAS5), used as initial conditions for the SEAS5 re-forecasts. SEAS5 will be the ECMWF contribution to the C3S multi-model seasonal forecast products, see paragraph 'SEAS5 and Copernicus services'.

Latest news

19.01.2018: Following the successful implementation of the SEAS5 system on 5 Nov. 2017 and the parallel run of the old System 4 for 3 months, we will stop this latter on 8  Feb 2018, with the run based on 1 February 2018. May we remind all users to start using the SEAS5 system before System 4 is terminated.

08.11.2017: We are pleased to confirm that the SEAS5 system was successfully implemented in operations on 5.11.2017. System 4 will keep running for a limited time.

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