The CHIMERE v2020r1 online chemistry-transport model

Abstract. The CHIMERE chemistry-transport model v2020r1 replaces the v2017r5 version and provides numerous novelties. most important of these is online coupling with Weather Research Forecasting (WRF) meteorological via OASIS3 – Model Coupling Toolkit (MCT) external coupler. can still be used in offline mode; mode enables us to take into account direct indirect effects aerosols on meteorology. This also using parameters sub-hourly time steps. Some new parameterizations are implemented increase performance user's choices: dimethyl sulfide (DMS) emissions, additional schemes for secondary organic aerosol (SOA) formation volatility basis set (VBS) H2O, improved mineral dust, biomass burning, sea-salt emissions. NOx emissions from lightning added. includes possibility use operator-splitting integration technique. subgrid-scale variability calculation concentrations due emission activity sectors now possible. Finally, a vertical advection scheme has been implemented, which able simulate more correctly long-range transport thin pollutant plumes.