TY - JOUR
T1 - Study on the aerosol optical properties and their relationship with aerosol chemical compositions over three regional background stations in China
AU - Che, Huizheng
AU - Yang, Zhifeng
AU - Zhang, Xiaoye
AU - Zhu, Chize
AU - Ma, Qiangli
AU - Zhou, Huaigang
AU - Wang, Peng
N1 - Funding Information:
This research was financially supported by grants from the National Key Project of Basic Research (2006CB403702 and 2006CB403701) and the CAMS Basis Research Project. The authors would like to thank the two anonymous reviewers for their constructive suggestions and comments.
PY - 2009/2
Y1 - 2009/2
N2 - 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.
AB - 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.
KW - Aerosol optical depth (AOD)
KW - Angstrom turbidity parameter
KW - Angstrom wavelength exponent
KW - Chemical composition
KW - China
KW - Regional background station
UR - http://www.scopus.com/inward/record.url?scp=58249126711&partnerID=8YFLogxK
U2 - 10.1016/j.atmosenv.2008.11.010
DO - 10.1016/j.atmosenv.2008.11.010
M3 - Article
AN - SCOPUS:58249126711
SN - 1352-2310
VL - 43
SP - 1093
EP - 1099
JO - Atmospheric Environment
JF - Atmospheric Environment
IS - 5
ER -