ECMWF is planning to introduce the new upgrade of the CAMS (Copernicus Atmosphere Monitoring Service) global real-time data assimilation and forecasting system on 12 May 2026. On the day, the first forecast cycle of CAMS to be generated using IFS cycle 50r1 will be the 12UTC forecast cycle.
The affected datasets are
The main updates include:
- Change in the assimilated observations.
- Changes to the aerosol and reactive gases modeling.
- Prescribed emissions have been updated to more recent versions.
- Hourly data for a subset of model levels forecast parameters of the CAMS global atmospheric composition forecast dataset.
All users of CAMS global forecast products are encouraged to view the details provided in the CAMS 50r1 Implementation page and test the data as per instructions: Accessing CAMS global forecast 50r1 test data
Users can watch the recording of the webinars on the upgrade details from the ECMWF IFS Model Cycle Updates playlist: https://www.youtube.com/playlist?list=PLwv2rZ5UPWUHNOeVBsR4A3h6w_GkpnEEl
For any questions or to report any issues with this model upgrade and your tests, please contact us using our ECMWF Support Portal.
ECMWF Support