Characteristics of aerosol size distribution and vertical backscattering coefficient profile during 2014 APEC in Beijing

doi:10.1016/j.atmosenv.2016.10.020

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院安徽光学精密机械研究所

	Characteristics of aerosol size distribution and vertical backscattering coefficient profile during 2014 APEC in Beijing
	Zhang, Jiaoshi 1,2; Chen, Zhenyi1 ; Lu, Yihuai 1; Gui, Huaqiao 1,2; Liu, Jianguo1,2 ; Liu, Wenqing1,2 ; Wang, Jie 1; Yu, Tongzhu 1; Cheng, Yin1 ; Chen, Yong 3
刊名	ATMOSPHERIC ENVIRONMENT
	2017
卷号	148 期号:无页码:30-41
关键词	Haze Apec Regional Transport Southwest Pathway Beijing
DOI	10.1016/j.atmosenv.2016.10.020
文献子类	Article
英文摘要	During the 2014 Asia-Pacific Economic Cooperation (APEC) conference period, Beijing's air quality was greatly improved as a result of a series of tough emission control measures being implemented in Beijing and its surrounding provinces. However, a moderate haze occurred during the period of 4-5 November. In order to evaluate the emission control measures and study the formation mechanism of the haze, a comprehensive field observation based on a supersite and a lidar network was carried out from 25 October 2014 to 20 January 2015. By investigating the variations in aerosol number concentration and mean backscattering coefficient before, during and after the APEC period, it was found that number concentration of accumulation mode and coarse mode particles experienced the most significant decrease by 47% and 68%, and mean backscattering coefficient below 1 km decreased by 34% during the APEC period. Being characterized as "rapidly accumulating and rapidly dispersing", the moderate haze occurred during the APEC period was probably initiated by a wind direction change to south and an increase of wind speed to 4 m/s. Sulfur dioxide involved plume nucleation without growth in size as well as a burst of particles ranging between 100 and 300 nm were observed simultaneously during the haze episode. The elevation of sulfur dioxide concentration and particle number concentration was highly correlated with the southerly wind, signifying the contribution of regional transport. It was observed by the lidar network that the aerosol backscattering coefficient increased in sequence among three sites along the southwest pathway, suggesting that aerosols might be transported from the southwest to the northeast of Beijing with a speed of approximately 17 km/h, which agreed with the movement of air masses modeled by Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT). The dual wavelength lidar (355 and 532 nm) observation suggested that transportation of fine particles from high-level atmosphere (approximately 2 km) could be the potential sources of the haze. Our result showed that regional transport would contribute to haze formation in Beijing under such meteorological conditions, thus, to maintain the "APEC blue", significant attention should be paid to controlling regional transport through the southwest pathway. (C) 2016 Elsevier Ltd. All rights reserved.
WOS关键词	NORTH CHINA PLAIN ; PARTICLE FORMATION EVENTS ; LONG-RANGE TRANSPORT ; AIR-POLLUTION ; RIVER DELTA ; RAMAN LIDAR ; GAS-PHASE ; HONG-KONG ; NUCLEATION ; GROWTH
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000389394900004
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences(XDB05040402 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB05040402 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB05040402 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB05040402 ; Key Research Program of the Chinese Academy of Sciences(KJZD-EW-TZ-G06-01) ; Key Research Program of the Chinese Academy of Sciences(KJZD-EW-TZ-G06-01) ; Key Research Program of the Chinese Academy of Sciences(KJZD-EW-TZ-G06-01) ; Key Research Program of the Chinese Academy of Sciences(KJZD-EW-TZ-G06-01) ; Natural Science Foundation of China(91544218 ; Natural Science Foundation of China(91544218 ; Natural Science Foundation of China(91544218 ; Natural Science Foundation of China(91544218 ; XDB05040300) ; XDB05040300) ; XDB05040300) ; XDB05040300) ; 21476221 ; 21476221 ; 21476221 ; 21476221 ; 41305021) ; 41305021) ; 41305021) ; 41305021) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB05040402 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB05040402 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB05040402 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB05040402 ; Key Research Program of the Chinese Academy of Sciences(KJZD-EW-TZ-G06-01) ; Key Research Program of the Chinese Academy of Sciences(KJZD-EW-TZ-G06-01) ; Key Research Program of the Chinese Academy of Sciences(KJZD-EW-TZ-G06-01) ; Key Research Program of the Chinese Academy of Sciences(KJZD-EW-TZ-G06-01) ; Natural Science Foundation of China(91544218 ; Natural Science Foundation of China(91544218 ; Natural Science Foundation of China(91544218 ; Natural Science Foundation of China(91544218 ; XDB05040300) ; XDB05040300) ; XDB05040300) ; XDB05040300) ; 21476221 ; 21476221 ; 21476221 ; 21476221 ; 41305021) ; 41305021) ; 41305021) ; 41305021)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/31716]
专题	合肥物质科学研究院_中科院安徽光学精密机械研究所
作者单位	1.Chinese Acad Sci, Key Lab Environm Opt & Technol, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China 2.Chinese Acad Sci, CAS Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China 4.Univ Sci & Technol China, Adv Prop Lab, Dept Modern Mech, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jiaoshi,Chen, Zhenyi,Lu, Yihuai,et al. Characteristics of aerosol size distribution and vertical backscattering coefficient profile during 2014 APEC in Beijing[J]. ATMOSPHERIC ENVIRONMENT,2017,148(无):30-41.
APA	Zhang, Jiaoshi.,Chen, Zhenyi.,Lu, Yihuai.,Gui, Huaqiao.,Liu, Jianguo.,...&Luo, Xisheng.(2017).Characteristics of aerosol size distribution and vertical backscattering coefficient profile during 2014 APEC in Beijing.ATMOSPHERIC ENVIRONMENT,148(无),30-41.
MLA	Zhang, Jiaoshi,et al."Characteristics of aerosol size distribution and vertical backscattering coefficient profile during 2014 APEC in Beijing".ATMOSPHERIC ENVIRONMENT 148.无(2017):30-41.