Application of data assimilation technology in source apportionment of PM2.5 during winter haze episodes in the Beijing-Tianjin-Hebei region in China

doi:10.1016/j.apr.2022.101546

	Application of data assimilation technology in source apportionment of PM2.5 during winter haze episodes in the Beijing-Tianjin-Hebei region in China
	Sun, Tingting 2,3; Zhang, Tianshu 1,2; Xiang, Yan 1; Fan, Guangqiang 2; Fu, Yibin 2; Lv, Lihui 1; Zheng, Haitao 2
刊名	ATMOSPHERIC POLLUTION RESEARCH
	2022-10-01
卷号	13
关键词	Lidar network CMAQ-ISAM Data assimilation The beijing-tianjin-hebei region PM2 5
ISSN号	1309-1042
DOI	10.1016/j.apr.2022.101546
通讯作者	Zhang, Tianshu(tszhang@aiofm.ac.cn) ; Xiang, Yan(yxiang@ahu.edu.cn)
英文摘要	Atmospheric fine particles (PM2.5) in the Beijing-Tianjin-Hebei region have a considerable impact on air quality. Quantitative analysis of PM2.5 transport within the boundary layer is still lacking. In this study, vertical observations from the lidar network were assimilated into the Community Multiscale Air Quality model. The integrated source apportionment method was used to investigate the contributions of PM2.5 in Beijing from January 10 to 18, 2018. After assimilation, the correlation coefficient values of the average diurnal vertical variation between the simulations and observations improved by 20.61%. The investigation of the regional transport at the different vertical layers indicated that: During the two pollution episodes, Beijing's local contribution was significant from the surface to 0.1 km, the maximum hourly mean contributions were 31.15 mu g/m3 and 27.56 mu g/ m3, respectively. From 0.1 to 0.8 km, the local contribution was decreased to below 10 mu g/m3, the contributions from the top 10 surrounding areas ranged from 9.51 mu g/m3 (49.9%) to 20.42 mu g/m3 (80.8%), which were 1.0-9.3 times greater than the local contribution. From 0.8 to 2.0 km, the local contribution decreased gradually, and the regional transport was mainly from Shanxi under prevailing wind fields. Based on lidar vertical observation data, our study revealed that the local contribution of Beijing played an important role in controlling the PM2.5 concentrations from the surface to 0.1 km, while the regional transport was considerable from 0.1 to 2.0 km, particularly from the severely polluted upwind region. It is critical to enhance regional joint emission control, especially during pollution episodes.
资助项目	National Natural Science Foundation of China[42005106] ; National Natural Science Foundation of China[41941011] ; Key Research and Develop- ment Program of Anhui Province[202004i07020002] ; Natural Science Foundation of Anhui Province, China[1908085QD160] ; Natural Science Foundation of Anhui Province, China[1908085QD170] ; Hefei Municipal Natural Science Foundation[2021046]
WOS关键词	JING-JIN-JI ; NORTH CHINA ; MASS CONCENTRATION ; AIR-POLLUTION ; AEROSOL SCATTERING ; UNITED-STATES ; TRANSPORT ; LIDAR ; IMPLEMENTATION ; COEFFICIENT
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	TURKISH NATL COMMITTEE AIR POLLUTION RES & CONTROL-TUNCAP
WOS记录号	WOS:000857192600001
资助机构	National Natural Science Foundation of China ; Key Research and Develop- ment Program of Anhui Province ; Natural Science Foundation of Anhui Province, China ; Hefei Municipal Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129943]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Tianshu; Xiang, Yan
作者单位	1.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Anhui, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Anhui, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Sun, Tingting,Zhang, Tianshu,Xiang, Yan,et al. Application of data assimilation technology in source apportionment of PM2.5 during winter haze episodes in the Beijing-Tianjin-Hebei region in China[J]. ATMOSPHERIC POLLUTION RESEARCH,2022,13.
APA	Sun, Tingting.,Zhang, Tianshu.,Xiang, Yan.,Fan, Guangqiang.,Fu, Yibin.,...&Zheng, Haitao.(2022).Application of data assimilation technology in source apportionment of PM2.5 during winter haze episodes in the Beijing-Tianjin-Hebei region in China.ATMOSPHERIC POLLUTION RESEARCH,13.
MLA	Sun, Tingting,et al."Application of data assimilation technology in source apportionment of PM2.5 during winter haze episodes in the Beijing-Tianjin-Hebei region in China".ATMOSPHERIC POLLUTION RESEARCH 13(2022).