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Atmospheric composition content of the new cycle
Assimilation
- Instrument specific bias correction for AOD
- Data assimilation for separate volcanic SO2 tracer (optional)
- Enable modification Nitrate and Ammonium aerosols by data assimilation (bugfix)
Observations
Emissions
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- Activation of assimilation of TropOMI CO retrievals
- AOD from VIIRS (activated already in 47r3 1.2.2023)
- Passive monitoring of IASI SO2 retrievals
Emissions
- CAMS_GLOB_ANT v5.3 with sectoral diurnal cycles and injection heights
- CAMS_GLOB_BIO v3.1 climatology
- CAMS_GLOB_OCE v.3.1 climatology DMS
- CAMS_GLOB_AIR v3.1 CO2/NOx (aircraft)
- Using IS4FIRES injection heights (from GFAS version 1.4)
- Sector-specific emission input to the IFS and application of sector specific injection height ranges and diurnal cycle profiles
- Natural emissions as as used previously
Model changes
- Activation of stratosphere chemistry using the BASCOE scheme - adding 63 reactive gas species
- New tropospheric species: HCN, CH3CN, Glyoxal and Glycoladehyde
- Improved isoprene oxidation simulation
- Update of dry deposition formulation for reactive gases
- Two new secondary organic aerosol tracers (anthropogenic and biogenic) and respective precursor gas tracers
- Major update of dust emissions and removal simulation (increase in the global dust burden by factor 2)
- Review of aerosol optical properties (dust , brown carbon)
- Improved secondary inoraganic aerosol simulation
- Use of COMADH advection for aerosols, reactive gases and GHG
Impact of the new cycle
For most compounds, the quality of the e-suite is ...
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