Investigation on the difference of PM2.5 transport flux between the North China Plain and the Sichuan Basin

doi:10.1016/j.atmosenv.2021.118922

	Investigation on the difference of PM2.5 transport flux between the North China Plain and the Sichuan Basin
	Zhang, Zhida 1; Wang, Xiaoqi 1; Cheng, Shuiyuan 1; Guan, Panbo 1; Zhang, Hanyu 2,3,4; Shan, Changgong 5; Fu, Yibin 5
刊名	ATMOSPHERIC ENVIRONMENT
	2022-02-15
卷号	271
关键词	WRF-CAMx PM2.5 flux Transport pathway Haze episodes The North China Plain The Sichuan Basin
ISSN号	1352-2310
DOI	10.1016/j.atmosenv.2021.118922
通讯作者	Wang, Xiaoqi(wangxq@bjut.edu.cn)
英文摘要	In this study, an advanced transport flux method based on the comprehensive stereoscopic observation verification was used to evaluate the contribution of transport to pollution in the North China Plain (NCP) and Sichuan Basin (SCB). The simulations were verified using fixed-point lidar and satellite observations, and the results demonstrated that the modeling flux calculation method was suitable for investigating the evolutionary trend of PM2.5 flux. The monthly inflow, outflow, and net flux indicated the intensive interactions and significant temporal and spatial variations of PM2.5 transport though the boundary segment of the city and region. In both autumn and winter, the Beijing-Tianjin-Hebei (BTH) region always played the role of "source " region, while Cheng-Yu (CY) region principally acted as a "convergence " region. In autumn and winter, the BTH region was controlled by a cold front weather system, and the pollutants were readily transported to the surrounding areas. However, the CY region was affected by the complex terrain, with small wind speeds near the ground and poor horizontal diffusion. The upper air was controlled by the northwestern winds behind the trough, and the air subsidence is substantial. The combined action of horizontal and vertical wind directions caused the accumulation of pollutants in the basin. Notably, one intrinsic transport pathway during two representative months was identified based on the investigation of cross-city and cross-region transport, namely the southwest-northeast (SW-NE) pathway in the BTH region. In the CY region, the northeastern transport pathway greatly influenced the cities in the basin. Additionally, through the analysis of the typical heavy pollution processes in the two regions, it was found that the southwest pathway of the BTH region and northeast pathway of the CY region in inter-city transport were significant factors before reaching the most severe stage of pollution.
资助项目	National Key Research and Devel-opment Program of China[2018YFC0213206] ; National Natural Science Foundation of China[52000005] ; National Natural Science Foundation of China[51638001] ; China Postdoctoral Science Foundation[2019M660382]
WOS关键词	FINE PARTICULATE MATTER ; TIANJIN-HEBEI REGION ; AIR-POLLUTION ; SOURCE APPORTIONMENT ; EMISSION INVENTORY ; URBAN AREA ; HAZE POLLUTION ; RIVER DELTA ; INTER-CITY ; AEROSOL
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000788224600004
资助机构	National Key Research and Devel-opment Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/131430]
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.Beijing Univ Technol, Key Lab Beijing Reg Air Pollut Control, Beijing 100124, Peoples R China 2.Beijing Technol & Business Univ, Sch Ecol & Environm, Beijing 100048, Peoples R China 3.Beijing Technol & Business Univ, State Environm Protect Key Lab Food Chain Pollut C, Beijing 100048, Peoples R China 4.Beijing Technol & Business Univ, Key Lab Cleaner Prod & Integrated Resource Utiliza, Beijing 100048, Peoples R China 5.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui Inst Opt & Fine Mech, 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. Investigation on the difference of PM2.5 transport flux between the North China Plain and the Sichuan Basin[J]. ATMOSPHERIC ENVIRONMENT,2022,271.
APA	Zhang, Zhida.,Wang, Xiaoqi.,Cheng, Shuiyuan.,Guan, Panbo.,Zhang, Hanyu.,...&Fu, Yibin.(2022).Investigation on the difference of PM2.5 transport flux between the North China Plain and the Sichuan Basin.ATMOSPHERIC ENVIRONMENT,271.
MLA	Zhang, Zhida,et al."Investigation on the difference of PM2.5 transport flux between the North China Plain and the Sichuan Basin".ATMOSPHERIC ENVIRONMENT 271(2022).