Observations of residual submicron fine aerosol particles related to cloud and fog processing during a major pollution event in Beijing

被引：48

作者：

Li, Zhengqiang ^{[1
]}

Eck, Tom ^{[2
]}

Zhang, Ying ^{[1
]}

Zhang, Yuhuan ^{[1
]}

Li, Donghui ^{[1
]}

Li, Li ^{[1
]}

Xu, Hua ^{[1
]}

Hou, Weizhen ^{[1
]}

Lv, Yang ^{[1
]}

Goloub, Philippe ^{[3
]}

Gu, Xingfa ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Environm Protect Key Lab Satellite Remote S, Beijing 100101, Peoples R China

[2] Univ Space Res Assoc, Columbia, MD USA

[3] Univ Lille 1, Opt Atmospher Lab, F-59655 Villeneuve Dascq, France

来源：

ATMOSPHERIC ENVIRONMENT | 2014年 / 86卷

基金：

中国国家自然科学基金;

关键词：

Residual size; Submicron fine mode aerosol; Size distribution; Cloud; Fog; Haze; AERONET;

D O I：

10.1016/j.atmosenv.2013.12.044

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Residual aerosols, the particles left behind after droplet evaporation, are important tracers for aerosols processed by cloud and/or fog. Based on ground-based CIMEL sun-sky radiometer measurements during an extreme winter pollution event in Beijing, we present observations of the decrease of residual aerosol with dissipation of cloud and an unusual case of residual aerosol increase after partial dissipation of fog. This unusual increase might be an important mechanism for the haze growth in polluted regions. The aerosol single scattering albedo is found to increase with the increase of residual aerosol. We also find that residual aerosol dominated cases with significant water content gain can occur in a short time (e.g. one hour) with the increase of aerosol volume size and decrease of particle number. A lognormal residual aerosol size distribution model is proposed based on sun sky radiometer measurements with center peak radius at 0.44 micron and geometric standard deviation of about 1.49. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：187 / 192

页数：6

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