ECMWF is planning to introduce a new upgrade of the CAMS (Copernicus Atmosphere Monitoring Service) global real-time data assimilation and forecasting system on 27 June 2023.
Key elements are:
- Addition of full stratospheric chemistry,
- Changes to the modelling of dust aerosol resulting in a redistribution of aerosol particles towards larger sizes and therefore a significant increase in global dust mass burden
- Addition of two new aerosol species (anthropogenic and biogenic secondary organic aerosol).
- Four new species have been added to the tropospheric chemistry scheme,
- Prescribed emissions have been updated to more recent versions.
In terms of technical changes, there is an important change to the GRIB encoding. This is the introduction of the Golomb-Rice coding compression method, as defined in the CCSDS recommended standard and implemented by the Adaptive Entropy Coding Library (AEC), as the default packing type for all gridded model output in GRIB 2 format.
All users of CAMS global forecast products are strongly advised to take note of the details provided in the CAMS 48r1 Implementation page and test their processing chains as early as possible with the test data provided.
For any questions or to report any issues with this model upgrade and your tests, please contact us using our ECMWF Support Portal.
Regards,
ECMWF Support
