Aerosol distribution over Europe: a model evaluation study with detailed aerosol microphysics

[摘要] This paper summarizes an evaluation of model simulations with a regionalscale atmospheric climate-chemistry/aerosol model called REMOTE, which hasbeen extended by a microphysical aerosol module. Model results over Europeare presented and compared with available measurements in surface airfocusing on the European distribution and variability of primary andsecondary aerosols. Additionally, model results obtained with detailedaerosol microphysics are compared to those based on an aerosol bulk massapproach revealing the impact of dry deposition fluxes on atmospheric burdenconcentration. An improved determination of elevated ozone and sulfateconcentrations could be achieved by considering a diurnal cycle in theanthropogenic emission fluxes. Deviation between modelled and measuredorganic carbon concentrations can be mainly explained by missing formationof secondary organic aerosols and deficiencies in emission data. Changingresidential heating practices in Europe, where the use of wood is no longerrestricted to rural areas, need to be considered in emission inventories aswell as vegetation fire emissions which present a dominant source of organiccarbon.

[学科分类] 大气科学