Impacts of mountains on black carbon aerosol under different synoptic meteorology conditions in the Guanzhong region, China

doi:10.1016/j.atmosres.2015.05.016

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Impacts of mountains on black carbon aerosol under different synoptic meteorology conditions in the Guanzhong region, China
	Cao, Junji 2,4; Zhao, Shuyu 1,2,6; Tie, Xuexi 2,5,6; Zhang, Qiang 3
刊名	ATMOSPHERIC RESEARCH
	2015-10-01
卷号	164 页码:286-296
关键词	Black Carbon Winds Pbl Height Mountain Breeze Wrf-chem
ISSN号	0169-8095
DOI	10.1016/j.atmosres.2015.05.016
文献子类	Article
英文摘要	The 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.
WOS关键词	MODEL ; HAZE ; PARAMETERIZATION ; REFLECTANCE ; MECHANISM ; EVOLUTION ; SYSTEM ; OZONE ; STATE ; FIELD
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000358095800024
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/9285]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Tie, Xuexi
作者单位	1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian, Peoples R China 3.Tsinghua Univ, Ctr Earth Syst Sci, Beijing 100084, Peoples R China 4.Xi An Jiao Tong Univ, Dept Environm Sci, Xian 710049, Peoples R China 5.Natl Ctr Atmospher Res, Boulder, CO 80307 USA 6.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Peoples R China
推荐引用方式 GB/T 7714	Cao, Junji,Zhao, Shuyu,Tie, Xuexi,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	Cao, Junji,Zhao, Shuyu,Tie, Xuexi,&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	Cao, Junji,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.