The vertical distribution and potential sources of aerosols in the Yangtze River Delta region of China during open straw burning

doi:10.1016/j.scitotenv.2022.157749

	The vertical distribution and potential sources of aerosols in the Yangtze River Delta region of China during open straw burning
	Tian, Xin 2,3; Ren, Bo 1; Xie, Pinhua 1,2,3,4,5; Xu, Jin 3; Li, Ang 1,3; Hu, Feng ; Zheng, Jiangyi 3; Ren, Hongmei 3; Hu, Zhaokun 3; Pan, Yifeng 2
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2022-11-25
卷号	849
关键词	MAX-DOAS Open straw burning Aerosol Regional transport Potential sources
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2022.157749
通讯作者	Xie, Pinhua(phxie@aiofm.ac.cn) ; Xu, Jin(jxu@aiofm.ac.cn)
英文摘要	To explore the impact of open straw burning on air quality in the Yangtze River Delta (YRD) and surrounding areas, three key cities in the YRD, namely Hefei, Nanjing, and Shanghai, were selected to observe changes in aerosol characteristics. Based on Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) observations from May to June 2021, the spatial-temporal distribution and potential sources of aerosol were studied. During the observation period, aerosol optical depth (AOD) in Shanghai was 55.15 % and 29.50 % higher than that in Hefei and Nanjing, respectively. For Shanghai, aerosols accumulated at night, and the aerosol extinction could reach 1.3 km(-1) in the morning. The aerosol variations in Hefei and Nanjing were consistent due to the relative conformity of the surrounding environmental conditions (R = 0.84). The vertical distribution of aerosol in all three cities had the same Gaussian shape. The aerosol lifted layers in Nanjing and Shanghai were higher than that in Hefei, with heights of 0.2-0.8 km and 0.2-0.6 km, respectively. The averaged aerosol extinctions for these two cities were 0.34 km(-1) and 0.49 km(-1), respectively. Pollution source analysis was conducted based on wind field trajectory, satellite observation, and model simulation, taking Hefei as the recipient. The results showed that western Shandong Province, northern Anhui Province, northern Jiangxi Province, central Jiangsu Province, and the central YRD were the most important aerosols sources for Hefei. The contributions of central and southern Jiangsu Province were significantly higher than those of other potential sources, with a WCWTAOD (Meteoinfo concentration weight trajectory) between 1.2 and 3.0. The influence of fine particles produced by open biomass burning inside the YRD was significantly higher than that outside the region (outside contribution: 36.6 %). Regarding the influence between YRD cities, more aerosols were transported from Shanghai to Hefei and Nanjing, with similar transport contributions between Nanjing and Hefei.
资助项目	National Natural Science Foundation of China[U19A2044] ; National Natural Science Foundation of China[42105132] ; National Natural Science Foundation of China[42030609] ; Natural Science Foundation of Anhui Province[2008085QD183]
WOS关键词	MAX-DOAS MEASUREMENTS ; ABSORPTION CROSS-SECTIONS ; TROPOSPHERIC NO2 ; RURAL SITE ; RESPIRATORY-DISEASES ; COLUMN DENSITIES ; AIR-QUALITY ; HCHO ; SO2 ; EMISSIONS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000863316400008
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129149]
专题	中国科学院合肥物质科学研究院
通讯作者	Xie, Pinhua; Xu, Jin
作者单位	1.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China 2.Anhui Univ, Inst Phys Sci & Informat Technol, Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Peoples R China 3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 4.Chinese Acad Sci, Inst Urban Environm, CAS Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tian, Xin,Ren, Bo,Xie, Pinhua,et al. The vertical distribution and potential sources of aerosols in the Yangtze River Delta region of China during open straw burning[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,849.
APA	Tian, Xin.,Ren, Bo.,Xie, Pinhua.,Xu, Jin.,Li, Ang.,...&Wang, Zijie.(2022).The vertical distribution and potential sources of aerosols in the Yangtze River Delta region of China during open straw burning.SCIENCE OF THE TOTAL ENVIRONMENT,849.
MLA	Tian, Xin,et al."The vertical distribution and potential sources of aerosols in the Yangtze River Delta region of China during open straw burning".SCIENCE OF THE TOTAL ENVIRONMENT 849(2022).