New IFS cycle brings sea-ice coupling and higher ocean resolution

Buizza, Roberto ; Bidlot, Jean-Raymond ; Janousek, Martin ; Keeley, Sarah ; Mogensen, Kristian ; Richardson, David

Année de publication
On 22 November 2016, ECMWF implemented a new version of its Integrated Forecasting System (IFS Cycle 43r1), which for the first time includes an interactive sea-ice model in the medium-range/monthly ensemble forecast (ENS). Other key features include a four times finer horizontal resolution in the ocean model and the use of a new, higher-resolution ocean ensemble of analyses and reanalyses, ORAS5. IFS Cycle 43r1 also brings changes in the use of observations, data assimilation and modelling, and it introduces a range of new parameters. The various changes and upgrades have led to significant improvements in forecast quality.

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