Aerosol distribution over Europe: a model evaluation study with detailed aerosol microphysics
This paper summarizes an evaluation of model simulations with a regional scale atmospheric climate- chemistry/aerosol model called REMOTE, which has been extended by a microphysical aerosol module. Model results over Europe are presented and compared with available mea- surements in surface air focusing on the European distribu- tion and variability of primary and secondary aerosols. Ad- ditionally, model results obtained with detailed aerosol mi- crophysics are compared to those based on an aerosol bulk mass approach revealing the impact of dry deposition fluxes on atmospheric burden concentration. An improved determi- nation of elevated ozone and sulfate concentrations could be achieved by considering a diurnal cycle in the anthropogenic emission fluxes. Deviation between modelled and measured organic carbon concentrations can be mainly explained by missing formation of secondary organic aerosols and defi- ciencies in emission data. Changing residential heating prac- tices in Europe, where the use of wood is no longer restricted to rural areas, need to be considered in emission inventories as well as vegetation fire emissions which present a dominant source of organic carbon.