IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Regression Analyses between Recent Air Quality and Visibility Changes in Megacities at Four Haze Regions in China
Lin, M (Lin, Mang)[ 1 ]; Tao, J (Tao, Jun)[ 1,2 ]; Chan, CY (Chan, Chuen-Yu)[ 1 ]; Cao, JJ (Cao, Jun-Ji)[ 3 ]; Zhang, ZS (Zhang, Zhi-Sheng)[ 1 ]; Zhu, LH (Zhu, Li-Hua)[ 1,2 ]; Zhang, RJ (Zhang, Ren-Jian)[ 4 ]
2012-12-31
Source PublicationAEROSOL AND AIR QUALITY RESEARCH
Volume12Issue:6Pages:1049-U876
Subtype期刊论文
Abstract

The Chinese government has put forward a series of aggressive control measures to tackle environmental problems, such as poor visibility, since the first year of its 11th five-year plan (2006-2010). Recently recorded visibility, air quality and meteorological data in four major megacities (Beijing, Shanghai, Guangzhou and Chengdu) in different haze regions (and climatic zones) of China were analyzed with the aim of evaluating the extent to which the control actions have affected these measures. The ambient concentrations of three major air pollutants (SO2, NO2 and PM10) in these cities all decreased in the years 2005-2009. However, improved visibility was observed only in Beijing and Guangzhou; it remained steady in Shanghai, and showed a decreasing trend in Chengdu. The results highlight the fact that the correlation between air quality and visibility is complex. Optimal empirical regression models were developed, based on measured air quality and meteorological parameter data, to better isolate possible causal correlations between visibility and air quality, as well as meteorological conditions. Our results show that the improvement in visibility in both Beijing and Guangzhou was mainly due to the reduced PM10 concentration. In Guangzhou, improved atmospheric visibility was also helped by a reduction in SO2 concentration in winter. In contrast, lower wind speed, together with possible changes in fine particle concentration and composition, could explain why no improvement in visibility trend was found in Shanghai or Chengdu.

KeywordAtmospheric Visibility Air Quality Megacity China
DOI10.4209/aaqr.2011.11.0220
Indexed BySCIE ; EI
Language英语
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10191
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorChan, CY (Chan, Chuen-Yu)[ 1 ]
Affiliation1.School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China;
2.South China Institute of Environmental Sciences, Guangzhou 510655, China;
3.Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China;
4.Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
Recommended Citation
GB/T 7714
Lin, M ,Tao, J ,Chan, CY ,et al. Regression Analyses between Recent Air Quality and Visibility Changes in Megacities at Four Haze Regions in China[J]. AEROSOL AND AIR QUALITY RESEARCH,2012,12(6):1049-U876.
APA Lin, M .,Tao, J .,Chan, CY .,Cao, JJ .,Zhang, ZS .,...&Zhang, RJ .(2012).Regression Analyses between Recent Air Quality and Visibility Changes in Megacities at Four Haze Regions in China.AEROSOL AND AIR QUALITY RESEARCH,12(6),1049-U876.
MLA Lin, M ,et al."Regression Analyses between Recent Air Quality and Visibility Changes in Megacities at Four Haze Regions in China".AEROSOL AND AIR QUALITY RESEARCH 12.6(2012):1049-U876.
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