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Contributions of trans-boundary transport to summertime air quality in Beijing, China
Wu, Jiarui1,3; Li, Guohui1; Cao, Junji1; Bei, Naifang2; Wang, Yichen1; Feng, Tian1,2; Huang, Rujin1; Liu, Suixin1; Zhang, Qiang4; Tie, Xuexi1
2017-02-10
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
Volume17Issue:3Pages:2035-2051
SubtypeArticle
AbstractIn the present study, the WRF-CHEM model is used to evaluate the contributions of trans-boundary transport to the air quality in Beijing during a persistent air pollution episode from 5 to 14 July 2015 in Beijing-Tianjin-Hebei (BTH), China. Generally, the predicted temporal variations and spatial distributions of PM2.5 (fine particulate matter), O-3 (ozone), and NO2 are in good agreement with observations in BTH. The WRF-CHEM model also reproduces reasonably well the temporal variations of aerosol species compared to measurements in Beijing. The factor separation approach is employed to evaluate the contributions of transboundary transport of non-Beijing emissions to the PM2.5 and O-3 levels in Beijing. On average, in the afternoon during the simulation episode, the local emissions contribute 22.4% to the O-3 level in Beijing, less than 36.6% from non-Beijing emissions. The O-3 concentrations in Beijing are decreased by 5.1% in the afternoon due to interactions between local and non-Beijing emissions. The non-Beijing emissions play a dominant role in the PM2.5 level in Beijing, with a contribution of 61.5 %, much higher than 13.7 %, from Beijing local emissions. The emission interactions between local and non-Beijing emissions enhance the PM2.5 concentrations in Beijing, with a contribution of 5.9 %. Therefore, the air quality in Beijing is generally determined by the trans-boundary transport of non-Beijing emissions during summertime, showing that the cooperation with neighboring provinces to mitigate pollutant emissions is key for Beijing to improve air quality.
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.5194/acp-17-2035-2017
WOS KeywordCHARACTERIZING OZONE PRODUCTION ; ORGANIC AEROSOL FORMATION ; CAL-MEX 2010 ; SEVERE HAZE ; SOURCE APPORTIONMENT ; METEOROLOGICAL UNCERTAINTIES ; MCMA-2006/MILAGRO CAMPAIGN ; OXIDATION MECHANISM ; REGIONAL TRANSPORT ; PARTICULATE MATTER
Indexed BySCI
Language英语
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000395129000001
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5524
Collection粉尘与环境研究室
Affiliation1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian, Peoples R China
2.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian, Shaanxi, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Tsinghua Univ, Dept Environm Sci & Engn, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wu, Jiarui,Li, Guohui,Cao, Junji,et al. Contributions of trans-boundary transport to summertime air quality in Beijing, China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(3):2035-2051.
APA Wu, Jiarui.,Li, Guohui.,Cao, Junji.,Bei, Naifang.,Wang, Yichen.,...&Tie, Xuexi.(2017).Contributions of trans-boundary transport to summertime air quality in Beijing, China.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(3),2035-2051.
MLA Wu, Jiarui,et al."Contributions of trans-boundary transport to summertime air quality in Beijing, China".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.3(2017):2035-2051.
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