Study on the aerosol optical properties and their relationship with aerosol chemical compositions over three regional background stations in China

被引:55
作者
Che, Huizheng [1 ]
Yang, Zhifeng [1 ]
Zhang, Xiaoye [1 ]
Zhu, Chize [2 ]
Ma, Qiangli
Zhou, Huaigang [3 ]
Wang, Peng
机构
[1] Chinese Acad Meteorol Sci, CMA, Ctr Atmosphere Watch & Serv, Key Lab Atmospher Chem, Beijing 100081, Peoples R China
[2] Zhejiang Meteorol Inst, Hangzhou 310017, Zhejiang, Peoples R China
[3] Shangdianzi Atmospher Background Stn, Beijing 101507, Peoples R China
关键词
Aerosol optical depth (AOD); Angstrom wavelength exponent; Angstrom turbidity parameter; Chemical composition; Regional background station; China; NORTH CHINA; SUN; NETWORK; RETRIEVAL; AERONET; DEPTH;
D O I
10.1016/j.atmosenv.2008.11.010
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The special and temporal characteristics of aerosol optical depth (AOD) and Angstrom wavelength exponent (Alpha) and their relationship with aerosol chemical compositions were analyzed by using the data of CE318 sun-photometer and aerosol sampling instruments at Lin'an, Shangdianzi and Longfengshan regional atmospheric background stations. Having the highest AOD among the three stations, Lin'an shows two peaks in a year. The AOD at Shangdianzi station shows a single annual peak with an obvious seasonal variation. The AOD at Longfengshan station has obvious seasonal variation which peaks in spring. The Alpha analysis suggests that the aerosol sizes in Lin'an, Longfengshan and Shangdianzi change from fine to coarse categories. The relationship between the aerosol optical depths of the Lin'an and Longfengshan stations and their chemical compositions is not significant, which suggests that there is not a simple linear relationship between column aerosol optical depth and the near surface chemical compositions of atmospheric aerosols. The aerosol optical depth may be affected by the chemical composition, the particle size and the shape of aerosol as well as the water vapor in the atmosphere. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1093 / 1099
页数:7
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