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{\textquoteright}s Copernicus programme and Destination Earth initiative.
The year also marked ECMWF{\textquoteright}s 50th anniversary, and the report summarises the events that helped celebrate five decades of scientific innovation, international collaboration and leadership in weather prediction.
Also available in Italian.
}, year = {2026}, journal = {ECMWF Annual Report}, month = {06/2026}, url = {\ }, }