IFS cycle 43r3 brings model and assimilation updates

Buizza, Roberto ; Bechtold, Peter ; Bonavita, Massimo ; Bormann, Niels ; Bozzo, Alessio ; Haiden, Thomas ; Hogan, Robin ; Holm, Elias ; Radnoti, Gabor ; Richardson, David ; Sleigh, Michael

Année de publication
On 11 July 2017, ECMWF implemented a substantial upgrade of its Integrated Forecasting System. IFS Cycle 43r3 includes changes in the model; in the way observations are used; in software infrastructure; and in the assimilation procedure used to generate the initial conditions for forecasts. The upgrade has had a broadly positive impact on forecast skill in medium-range and monthly forecasts. It follows the implementation of IFS Cycle 43r1 in November 2016, which for the first time included an interactive sea-ice model in the medium-range/monthly ensemble (Buizza et al., 2017).

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