Sensitivity analysis of the Ångstrom exponent for multimodal aerosol size distributions

被引：0
作者：
Chang H. Jung
Junshik Um
Ji Yi Lee
Yong P. Kim
机构：
[1] Kyungin Women’s College,Department of Health Management
[2] University of Illinois at Urbana-Champaign,Department of Atmospheric Sciences
[3] Chosun University,Department of Environmental Engineering
[4] Ewha Womans University,Department of Environmental Science and Engineering
[5] Kyungin Women’s College,Department of Health Management
来源：
Asia-Pacific Journal of Atmospheric Sciences | 2013年 / 49卷
关键词：
Ångstrom exponent; polydispersed aerosol size distribution; coarse mode; sensitivity analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This study characterizes the Ångstrom exponent for polydispersed aerosol size distributions. Under the assumption of a lognormal size distribution, the dependence of Ångstrom exponent on the size distribution and the refractive index with varying real and imaginary parts are determined. Further, the influence of coarse mode particles on the Ångstrom exponent is investigated quantitatively. The results show that the nuclei mode has less influence under the simulation conditions considered in this study. It is also shown that the refractive index is an important factor influencing the Ångstrom exponent. The effect of the coarse mode on the Ångstrom exponent computed with different aerosol number concentrations and as a function of a geometric standard deviation and a geometric mean diameter is tested. It is shown that the coarse mode is crucial for determining the Ångstrom exponent.
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页码：625 / 634
页数：9
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