气候变化领域集成服务门户(CCPortal): Vertical distribution characteristics of aerosol particles over the Guanzhong Plain

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DOI	10.1016/j.atmosenv.2021.118444
	Vertical distribution characteristics of aerosol particles over the Guanzhong Plain
	He Y.; Xu X.; Gu Z.; Chen X.; Li Y.; Fan S.
发表日期	2021
ISSN	1352-2310
卷号	255
英文摘要	Haze pollution occurs frequently in Xi'an-centerd Guanzhong Plain (GZP) in winter. In this study, a vehicle-based lidar system was used for monitoring the vertical distribution of aerosol particulates during a typical winter haze episode over GZP. Fixed-point lidar observations were combined with field observations of particle charging in Xi'an city to investigate the distribution of atmospheric particles and the process of formation of particulate pollution. Mobile lidar observations were conducted over three navigation routes in Xi'an and its neighboring cities to investigate the origin and transport of aerosol particles, and meteorological interactions over GZP. The results demonstrated that local emissions were the main cause of near-surface particulate pollution. Fluctuations in humidity promoted particle charging and enhanced particle growth. Polluted dust particles entrained by air mass could be transported from the northwest to high-altitude areas of Xi'an. Mobile lidar observations showed that aerosol particles in the Xi'an-Xianyang area exhibited a clear vertically stratified structure under 1900 m height; there was only one aerosol layer concentrated within 900 m from the ground in Baoji and the near-ground extinction coefficient was relatively high. A larger aerosol optical depth (AOD) was observed in Xi'an-Xianyang than in Baoji, indicating that AOD could be affected by the elevated aerosol layers within the boundary layer. The combined methods of fixed and mobile lidar measurements, and satellite information can be applied in other regions and supply detailed information for air quality models. © 2021 Elsevier Ltd
关键词	Aerosol optical depth Haze pollution Lidar observations Local emissions Particle charging Vertical distribution
语种	英语
scopus关键词	Air quality; Atmospheric humidity; Boundary layers; Optical properties; Optical radar; Particles (particulate matter); Transportation routes; Aerosol layers; Aerosol optical depths; Aerosol particles; Haze pollutions; Lidar observation; Local emissions; Mobile lidar; Particle charging; Particulate pollution; Vertical distributions; Aerosols; aerosol; air quality; atmospheric pollution; atmospheric transport; boundary layer; episodic event; haze; humidity; lidar; optical depth; optimization; particle size; particulate matter; vertical distribution; aerosol; air monitoring; air pollution; air quality; altitude; Article; atmospheric dispersion; atmospheric particulate matter; atmospheric transport; boundary layer; China; dust; geographic distribution; haze; humidity; measurement; motor vehicle; optical depth; priority journal; surface charge; winter; China; Guanzhong Plain; Shaanxi
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248425
作者单位	School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, 519082, China; Guangdong Provincial Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary, Key Laboratory of Tropical Atmosphere-Ocean System, Ministry of Education, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519082, China; School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; Meteorological Bureau of Xi'an City, Xi’ an, 710016, China
推荐引用方式 GB/T 7714	He Y.,Xu X.,Gu Z.,et al. Vertical distribution characteristics of aerosol particles over the Guanzhong Plain[J],2021,255.
APA	He Y.,Xu X.,Gu Z.,Chen X.,Li Y.,&Fan S..(2021).Vertical distribution characteristics of aerosol particles over the Guanzhong Plain.ATMOSPHERIC ENVIRONMENT,255.
MLA	He Y.,et al."Vertical distribution characteristics of aerosol particles over the Guanzhong Plain".ATMOSPHERIC ENVIRONMENT 255(2021).