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Impacts of mountains on black carbon aerosol under different synoptic meteorology conditions in the Guanzhong region, China
Zhao, Shuyu1,2,3; Tie, Xuexi1,2,4; Cao, Junji1,5; Zhang, Qiang6
2015-10-01
Source PublicationATMOSPHERIC RESEARCH
ISSN0169-8095
Volume164Pages:286-296
SubtypeArticle
AbstractThe Xi'an City and the surrounding area (the Guan-Zhong GZ region) in western China have been suffering severe air pollutions during wintertime in recent years. In-situ black carbon (BC) measurement combined with a regional dynamical and chemical model (WRF-Chem model) is used to investigate the formation of a haze episode occurred from Jan. 3rd to Jan. 13th 2013. The results show that the measured BC concentrations exhibit a large day-to-day variability. The impacts of synoptic weather systems, local meteorological parameters and mountain effect on the BC variability are studied. Because the GZ region is surrounded by two major mountains, the Loess Plateau in the north and the Qinling Mountains in the south, especially the peak of the Qinling Mountains higher than 3000 m, we particularly analyze the effects of the Qinling Mountains on the BC pollution. The analysis shows that the BC pollution in Xran City and the GZ region is strongly affected by the synoptic weather systems, local meteorological winds and the Qinling Mountains. Under a typical northeast wind condition, winds are blocked by the Qinling Mountains, and BC particles are trapped at the foothill of the mountains, resulting in high BC concentrations in the city of Xi'an. Under a typical east wind condition, BC particles are transported along a river valley and the foothill of the Qinling Mountains. In this case, the mountain-river valley plays a role to accelerate the east wind, resulting in a reduction of the BC pollution. Under a typical calm wind condition, the BC particles are less diffused from their source region, and there is a mountain breeze from the Qinling Mountains to the city of Xran, and BC particles accumulate in the city, especially in the north side of the city. This study illustrates that while locating between complicated terrain conditions, such as the GZ region, the mountains play very important roles for the formation of hazes in the region. (C) 2015 Elsevier B.V. All rights reserved.
KeywordBlack Carbon Winds Pbl Height Mountain Breeze Wrf-chem
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.atmosres.2015.05.016
WOS KeywordMODEL ; HAZE ; PARAMETERIZATION ; REFLECTANCE ; MECHANISM ; EVOLUTION ; SYSTEM ; OZONE ; STATE ; FIELD
Indexed BySCI
Language英语
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000358095800024
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9286
Collection粉尘与环境研究室
Corresponding AuthorTie, Xuexi
Affiliation1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Natl Ctr Atmospher Res, Boulder, CO 80307 USA
5.Xi An Jiao Tong Univ, Dept Environm Sci, Xian 710049, Peoples R China
6.Tsinghua Univ, Ctr Earth Syst Sci, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Shuyu,Tie, Xuexi,Cao, Junji,et al. Impacts of mountains on black carbon aerosol under different synoptic meteorology conditions in the Guanzhong region, China[J]. ATMOSPHERIC RESEARCH,2015,164:286-296.
APA Zhao, Shuyu,Tie, Xuexi,Cao, Junji,&Zhang, Qiang.(2015).Impacts of mountains on black carbon aerosol under different synoptic meteorology conditions in the Guanzhong region, China.ATMOSPHERIC RESEARCH,164,286-296.
MLA Zhao, Shuyu,et al."Impacts of mountains on black carbon aerosol under different synoptic meteorology conditions in the Guanzhong region, China".ATMOSPHERIC RESEARCH 164(2015):286-296.
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