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- Hybrid Linear Ozone (HLO) scheme (a Cariolle-type linear parameterisation of stratospheric ozone chemistry using the multi-year mean of the CAMS reanalysis as mean state) .
- New sea-salt emission scheme based on Albert et al. (2016), providing better agreement with measured sea-salt size distribution.
- Updated dust source function, reducing excess dust in the Sahara, Middle East and other regions, and restoring missing dust over Australia.
- Revised coefficients in UV processor, based on ATLAS3 spectrum.
Impact of the new cycle
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A comprehensive evaluation report of the 47r1 e-suite is being prepared by CAMS 84 . Noteworthy improvements w.r.t to the current o-suite cycle 46r1 are:
- strongly reduced stratospheric ozone bias (10-20 hPa range) because of the HLO ozone scheme
- strongly reduced positive SO2 surface bias, especially during night time, in Europe and North-America because of the introduction of injection heights for SO2 emissions
- increased fine and ultra fine mode sea-salt and reduced corse mode sea-salt because of the new sea-salt emissions scheme
- increased surface PM2.5 leading to improvements over Europe
Technical details of the new cycle
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