Revealing the modulation of boundary conditions and governing processes on ozone formation over northern China in June 2017

doi:10.1016/j.envpol.2020.115999

	Revealing the modulation of boundary conditions and governing processes on ozone formation over northern China in June 2017
	Yan, Feifan 1,2; Gao, Yang 1,2,3; Ma, Mingchen 1,2; Liu, Cheng 4,5,6; Ji, Xiangguang 7; Zhao, Fei 5; Yao, Xiaohong 1,2,3; Gao, Huiwang 1,2,3
刊名	ENVIRONMENTAL POLLUTION
	2021-03-01
卷号	272
关键词	Ozone Boundary conditions Process analysis PBL Dynamic emission control
ISSN号	0269-7491
DOI	10.1016/j.envpol.2020.115999
通讯作者	Gao, Yang(yanggao@ouc.edu.cn)
英文摘要	In this study, ozonesonde data were used to evaluate the impact of different boundary conditions on the vertical distribution of ozone over urban Beijing. The comparison shows that the clean and static boundary conditions, referred to as PROFILE, apparently underestimate the ozone concentration over the upper troposphere and stratosphere, whereas the global chemical transport model (CTM) provides much more reasonable performance. Further investigation reveals that the boundary conditions exert larger impacts over areas with high altitudes and close distances to boundaries, such as the Tibetan Plateau, while they yield weak impacts on regions relatively far from the boundary, such as the North China Plain (NCP). Process analysis was conducted to investigate the modulation of physical and chemical processes on ozone formation in June 2017, illustrating that during the daytime of the high-O-3 period, the photochemical reactions within the planetary boundary layer (PBL) almost become the only source favorable to ozone accumulation. Motivated by this phenomenon, we constructed a linear regression and found that the maximum daily 8-hr ozone (MDA8) ozone concentration was highly correlated with the surface ozone change rate and chemical reactions in the PBL during the pollution period, with MDA8 ozone exceeding 70 ppbv over NCP. Based on this relationship as well as the design of numerical experiments, we propose a strategy of dynamic emission control. Firstly, the emission reduction during the peak ozone formation period may weaken the fast chemical reactions in the PBL and subsequent surface ozone concentration. Secondly, emission reduction one or two days prior to an episode might achieve larger ozone reduction through the accumulation effect. Lastly, emission control outside of the NCP may surpass the local impact under favorable meteorological conditions. Therefore, the efficacy of dynamic emission control was striking when both the accumulation and transport effect were taken into consideration. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	National Key Project of MOST[2017YFC0209801] ; National Natural Science Foundation of China[41705124]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000615555000060
资助机构	National Key Project of MOST ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/120991]
专题	中国科学院合肥物质科学研究院
通讯作者	Gao, Yang
作者单位	1.Ocean Univ China, Key Lab Marine Environm & Ecol, Minist Educ, Qingdao 266100, Peoples R China 2.Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Minist Educ, Qingdao 266100, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China 4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 5.Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, Hefei 230026, Peoples R China 6.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 7.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Yan, Feifan,Gao, Yang,Ma, Mingchen,et al. Revealing the modulation of boundary conditions and governing processes on ozone formation over northern China in June 2017[J]. ENVIRONMENTAL POLLUTION,2021,272.
APA	Yan, Feifan.,Gao, Yang.,Ma, Mingchen.,Liu, Cheng.,Ji, Xiangguang.,...&Gao, Huiwang.(2021).Revealing the modulation of boundary conditions and governing processes on ozone formation over northern China in June 2017.ENVIRONMENTAL POLLUTION,272.
MLA	Yan, Feifan,et al."Revealing the modulation of boundary conditions and governing processes on ozone formation over northern China in June 2017".ENVIRONMENTAL POLLUTION 272(2021).