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Spatiotemporal variations of air pollutants in western China and their relationship to meteorological factors and emission sources
Yang, JH (Yang, Junhua)1; Ji, ZM (Ji, Zhenming)2,3; Kang, SC (Kang, Shichang)1,4; Zhang, QG (Zhang, Qianggong)4,5; Chen, XT (Chen, Xintong)1; Lee, SY (Lee, Shao-Yi)2,3
Source PublicationENVIRONMENTAL POLLUTION
2019
Volume254Issue:0Pages:112952
DOI10.1016/j.envpol.2019.07.120
Abstract

We have carried out a comprehensive analysis of six air pollutants (particles with an aerodynamic diameter less than 2.5 mu m (PM2.5) and less than 10 mu m (PM10), carbon monoxide (CO), sulfur dioxide (SO2), nitrogen dioxide (NO2), and ozone (O-3)) in western China, including the spatiotemporal characteristics of air pollutants, their relationship with meteorological factors and emission sources, and the efficiency of emission control strategies for the region. Based hourly observations at 23 sites in western China from June 2016 to May 2017, concentrations of most pollutants were higher outside the Tibetan Plateau, lowest in summer and highest in winter, the exception being O-3. This was partially because meteorological conditions in winter were found to the most unfavorable to pollutant dispersion and dilution than other seasons. Pollutant concentrations at most sites were correlated with the residential emissions which were higher in winter, but anti-correlated with the industrial emissions which were lower during the winter holiday period. The Weather Research and Forecasting with Chemistry (WRF-Chem) simulations of four pollution control strategies indicated that reduction of residential emissions is crucial to alleviate PM2.5, PM10, and CO pollution in western China, although reduction of industrial and transport emissions can reduce SO2 and NO2, respectively. Since PM2.5 and PM10 were also found to be the species most and next frequently responsible for extremely serious pollution in western China, respectively, we recommend pollution control regulations that target residential emissions. (C) 2019 Elsevier Ltd. All rights reserved.

Subject AreaEnvironmental Sciences
WOS IDWOS:000488887500064
Language英语
Indexed BySCI
KeywordProvincial Capital Cities Severe Haze Pollution Source Apportionment Aerosol Concentrations Particulate Matter Temporal Variation Vehicle Emissions Mineral Aerosols Black Carbon River Delta
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Cooperation Status国内
ISSN0269-7491
Department环境变化与地表过程重点实验室
URL查看原文
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9110
Collection图书馆
Corresponding AuthorJi, ZM (Ji, Zhenming)
Affiliation1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China;
2.Sun Yat Sen Univ, Sch Atmospher Sci, Guangdong Prov Key Lab Climate Change & Nat Disas, Guangzhou 510275, Guangdong, Peoples R China;
3.Southern Lab Ocean Sci & Engn, Zhuhai 519000, Guangdong, Peoples R China;
4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China;
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100085, Peoples R China.
Recommended Citation
GB/T 7714
Yang, JH ,Ji, ZM ,Kang, SC ,et al. Spatiotemporal variations of air pollutants in western China and their relationship to meteorological factors and emission sources[J]. ENVIRONMENTAL POLLUTION,2019,254(0):112952.
APA Yang, JH ,Ji, ZM ,Kang, SC ,Zhang, QG ,Chen, XT ,&Lee, SY .(2019).Spatiotemporal variations of air pollutants in western China and their relationship to meteorological factors and emission sources.ENVIRONMENTAL POLLUTION,254(0),112952.
MLA Yang, JH ,et al."Spatiotemporal variations of air pollutants in western China and their relationship to meteorological factors and emission sources".ENVIRONMENTAL POLLUTION 254.0(2019):112952.
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