CCWG Development Activities

Development Priorities for CESM2 and after

Improved representation of Secondary Organic Aerosols (SOA), with volatility basis set (VBS) framework, coupled to expanded tropospheric chemistry
Include ammonium nitrate in modal aerosol model (MAM3 or MAM4)
Implement FAST-J/CLOUD-J online photolysis scheme
Evaluate chemistry in CAM6/CLUBB at 1-deg
Evaluate chemistry in coupled land-atmosphere-biogeochemistry model configurations; particularly biogenic emissions, CLM fire emissions and vertical distribution; methane from land and ocean
SE/FV dynamical core comparison: on-going tracer tests based on SD configuration

Tools for model result differencing
Benchmark numbers: methyl chloroform lifetime, ozone budget terms, methane lifetime, mass-weighted tropospheric OH, lightning NOx, emissions (co/nox/isoprene)