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The meteorological changes can be found on the ECMWF IFS CY47R2 page.
The main change which impacts CAMS is the switch to running the forecasts (but not the analysis) using single-precision arithmetic for increased computational efficiency.
Atmospheric composition content of the new cycle
Assimilation
- Update to TROPOMI SO2 assimilation
Observations
- No other changes compared to 47R1
Observations
Emissions
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- the observations used in 47r1.
Emissions
- Reduced volcanic outgassing SO2 from certain volcanoes based on recent observations.
- Implemented cap on anthropogenic primary OM emissions to reduce excesses in highly polluted regions.
- Increased numerical precision in prescribed emission fields to remove artefacts.
Other model changes
- Numerical improvements to the aerosol and chemistry schemes to accommodate running the forecasts in single precision as noted above.
Impact of the new cycle
Technical details of the new cycle
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