Modelling the formation of H2SO4-H2O particles in rural, urban and marine conditions

被引：42

作者：

Pirjola, L ^{[1
]}

Kulmala, M ^{[1
]}

机构：

[1] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland

来源：

ATMOSPHERIC RESEARCH | 1998年 / 46卷 / 3-4期

基金：

芬兰科学院;

关键词：

formation of atmospheric aerosols; sulphuric acid; dimethylsulphide; UV radiation;

D O I：

10.1016/S0169-8095(97)00072-0

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The factors which affect the formation of new sulphuric acid particles in different atmospheric conditions are investigated. An atmospheric chemistry gas phase box model coupled to a three mode integral aerosol dynamics model is used. The simulations show the dependence of the concentration of nucleation mode particles on initial pre-existing particles, the intensity of UV radiation, the emissions of dimethylsulphide (DMS) and the ratio of emissions of hydrocarbons (HC) and NOx present in the atmosphere. Eight different basic cases are simulated in urban, rural and marine conditions. The effects of pre-existing particles as a sink of sulphuric acid are clearly seen. The increased UV radiation is also seen to enhance particle formation via sulphuric acid route significantly. (C) 1998 Elsevier Science B.V.

引用

收藏

页码：321 / 347

页数：27

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