Annual Report 2025

Key developments included modelling and data assimilation improvements for the Integrated Forecasting System; the operationalisation of the Artificial Intelligence Forecasting System (AIFS); improvements in forecast skill; the opening of the full real-time data catalogue under a permissive licence; and contributions to the European Union’s Copernicus programme and Destination Earth initiative.

The year also marked ECMWF’s 50th anniversary, and the report summarises the events that helped celebrate five decades of scientific innovation, international collaboration and leadership in weather prediction.