Insights into multidimensional transport flux from vertical observation and numerical simulation in two cities in North China

doi:10.1016/j.jes.2021.11.018

	Insights into multidimensional transport flux from vertical observation and numerical simulation in two cities in North China
	Zhang, Zhida 2; Wang, Xiaoqi 2; Cheng, Shuiyuan 2; Tang, Guiqian 1; Fu, Yibin 3
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2023-03-01
卷号	125
关键词	Transport flux Horizontal transport Vertical exchange Atmospheric boundary layer Free troposphere Pollutant budget relationship
ISSN号	1001-0742
DOI	10.1016/j.jes.2021.11.018
通讯作者	Wang, Xiaoqi(wangxq@bjut.edu.cn)
英文摘要	This study represents the first quantitative evaluation of pollution transport budget within the boundary layer of typical cities in the Beijing-Tianjin-Hebei (BTH) region from the perspective of horizontal and vertical exchanges and further discusses the impact of the atmospheric boundary layer (ABL)-free troposphere (FT) exchange on concentration of fine particulate matter (PM2.5) within the ABL during heavy pollution. From the perspective of the transport flux balance relationship, differences in pollution transport characteristics between the two cities is mainly reflected in the ABL-FT exchange effect. The FT mainly flowed into the ABL in BJ, while in SJZ, the outflow from the ABL to the FT was more intense. Combined with an analysis of vertical wind profile distribution, BJ was found to be more susceptible to the influence of northwest cold high prevailing in winter, while sinking of strong cold air allowed the FT flowing into the ABL influence the vertical exchange over BJ. In addition, we selected a typical pollution event for targeted analysis to understand mechanistic details of the influence of ABL-FT exchange on the pollution event. These results showed that ABL-FT interaction played an important role in PM2.5 concentration within the ABL during heavy pollution. Especially in the early stage of heavy pollution, FT transport contributed as much as 82.74% of PM2.5 within the ABL. These findings are significant for improving our understanding of pollution transport characteristics within the boundary layer and the effect of ABL-FT exchange on air quality. (c) 2022 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
资助项目	National Key Research and Development Program of China[2018YFC0213206] ; National Natural Science Foundation of China[52000005] ; National Natural Science Foundation of China[51638001]
WOS关键词	BOUNDARY-LAYER HEIGHT ; TIANJIN-HEBEI REGION ; PARTICULATE MATTER ; AIR-POLLUTION ; MIXING LAYER ; EMISSION INVENTORY ; MODEL ; AUTUMN ; OZONE ; HAZE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000798820500012
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131053]
专题	中国科学院合肥物质科学研究院
通讯作者	Wang, Xiaoqi
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China 2.Beijing Univ Technol, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China 3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhida,Wang, Xiaoqi,Cheng, Shuiyuan,et al. Insights into multidimensional transport flux from vertical observation and numerical simulation in two cities in North China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2023,125.
APA	Zhang, Zhida,Wang, Xiaoqi,Cheng, Shuiyuan,Tang, Guiqian,&Fu, Yibin.(2023).Insights into multidimensional transport flux from vertical observation and numerical simulation in two cities in North China.JOURNAL OF ENVIRONMENTAL SCIENCES,125.
MLA	Zhang, Zhida,et al."Insights into multidimensional transport flux from vertical observation and numerical simulation in two cities in North China".JOURNAL OF ENVIRONMENTAL SCIENCES 125(2023).