A global model: Arpege
This model covers the entire globe with a mesh size ranging from 5 km for Europe to 24 km. It makes it possible to predict large-scale phenomena (depressions, anticyclones, for example) that travel around the globe. Arpege is used for forecasting up to four days ahead over mainland France, overseas territories, maritime domains and areas of interest for France. Beyond three to four days, Météo-France uses the model of the European Centre for Medium-Range Weather Forecasts (ECMWF) based in Reading. This model is developed in partnership with Météo-France and shares common elements with Arpege. It is used for forecasts up to 10-15 days.
Arpege is also available in a "climate" version. Coupled with other models (ocean, sea ice, surfaces, etc), it can be used to simulate climate changes over long periods (month, year, decade).