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

doi:10.1016/j.envpol.2020.115804

HFCAS OpenIR

	Transport and boundary layer interaction contribution to extremely high surface ozone levels in eastern China
	Li, Xiao-Bing 1,2; Fan, Guangqiang 3; Lou, Shengrong 4; Yuan, Bin 1,2; Wang, Xuemei 1,2; Shao, Min 1,2
	2021
发表期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
通讯作者	Fan, Guangqiang(gqfan@aiofm.ac.cn)
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.
关键词	Yangtze river delta Ozone lidar Ozone pollution Vertical observation Downward transport
DOI	10.1016/j.envpol.2020.115804
关键词[WOS]	YANGTZE-RIVER DELTA ; UNMANNED AERIAL VEHICLE ; TROPOSPHERIC OZONE ; SOURCE APPORTIONMENT ; METEOROLOGICAL INFLUENCES ; VERTICAL-DISTRIBUTION ; AIRCRAFT MEASUREMENTS ; REGIONAL TRANSPORT ; SHANGHAI ; PRECURSORS
收录类别	SCI
语种	英语
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]
项目资助者	China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; Special Fund Project for Science and Technology Innovation Strategy of Guangdong Province
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000600553000122
出版者	ELSEVIER SCI LTD
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/120060
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.Jinan Univ, Inst Environm & Climate Res, Guangzhou 510632, Peoples R China 2.Guangdong Hongkong Macau Joint Lab Collaborat Inn, Guangzhou 510632, Peoples R China 3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 4.Shanghai Acad Environm Sci, State Environm Protect Key Lab Cause & Prevent Ur, Shanghai 200233, Peoples R China
通讯作者单位	中科院安徽光学精密机械研究所
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).