Transport and boundary layer interaction contribution to extremely high surface ozone levels in eastern China

doi:10.1016/j.envpol.2020.115804

	Transport and boundary layer interaction contribution to extremely high surface ozone levels in eastern China
	Li, Xiao-Bing 2,3; Fan, Guangqiang 1; Lou, Shengrong 4; Yuan, Bin 2,3; Wang, Xuemei 2,3; Shao, Min 2,3
刊名	ENVIRONMENTAL POLLUTION
	2021
卷号	268
关键词	Yangtze river delta Ozone lidar Ozone pollution Vertical observation Downward transport
ISSN号	0269-7491
DOI	10.1016/j.envpol.2020.115804
通讯作者	Fan, Guangqiang(gqfan@aiofm.ac.cn)
英文摘要	Vertical measurements of ozone (O-3) within the 3000-m lower troposphere were obtained using an O-3 lidar to investigate the contribution of the interactions between the transport and boundary layer processes to the surface O-3 levels in urban Shanghai, China during July 23-28, 2017. An extremely severe pollution episode with a maximum hourly O-3 mixing ratio of 160.4 ppb was observed. In addition to enhanced local photochemical production, both downward and advection transport in the lower troposphere may have played important roles in forming the pollution episode. The O-3-rich air masses in the lower free troposphere primarily originated from central China and the northern Yangtze River Delta (YRD) region. The downward transport of O-3 from the lower free troposphere may have an average contribution of up to 49.1% to the daytime (09:00-16:00 local time) surface O-3 in urban Shanghai during the pollution episode (July 23-26, 2017). As for the advection transport, large amounts of O-3 were transported outward from Shanghai in the planetary boundary layer under the influence of southeasterly winds during the field study. In this condition, the boundary-layer O-3 that was transported downward from the free troposphere in Shanghai could be transported back to the northern YRD region and accumulated therein, leading to the occurrence of severe O-3 pollution events over the whole YRD region. Our results indicate that effective regional emission control measures are urgently required to mitigate O-3 pollution in the YRD region. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	China Postdoctoral Science Foundation[2019M663367] ; National Natural Science Foundation of China[41605020] ; Special Fund Project for Science and Technology Innovation Strategy of Guangdong Province[2019B121205004]
WOS关键词	YANGTZE-RIVER DELTA ; UNMANNED AERIAL VEHICLE ; TROPOSPHERIC OZONE ; SOURCE APPORTIONMENT ; METEOROLOGICAL INFLUENCES ; VERTICAL-DISTRIBUTION ; AIRCRAFT MEASUREMENTS ; REGIONAL TRANSPORT ; SHANGHAI ; PRECURSORS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000600553000122
资助机构	China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; Special Fund Project for Science and Technology Innovation Strategy of Guangdong Province
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/120059]
专题	中国科学院合肥物质科学研究院
通讯作者	Fan, Guangqiang
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 2.Jinan Univ, Inst Environm & Climate Res, Guangzhou 510632, Peoples R China 3.Guangdong Hongkong Macau Joint Lab Collaborat Inn, Guangzhou 510632, Peoples R China 4.Shanghai Acad Environm Sci, State Environm Protect Key Lab Cause & Prevent Ur, Shanghai 200233, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiao-Bing,Fan, Guangqiang,Lou, Shengrong,et al. Transport and boundary layer interaction contribution to extremely high surface ozone levels in eastern China[J]. ENVIRONMENTAL POLLUTION,2021,268.
APA	Li, Xiao-Bing,Fan, Guangqiang,Lou, Shengrong,Yuan, Bin,Wang, Xuemei,&Shao, Min.(2021).Transport and boundary layer interaction contribution to extremely high surface ozone levels in eastern China.ENVIRONMENTAL POLLUTION,268.
MLA	Li, Xiao-Bing,et al."Transport and boundary layer interaction contribution to extremely high surface ozone levels in eastern China".ENVIRONMENTAL POLLUTION 268(2021).