Impacts of Transboundary Dust Transport on Aerosol Pollution in the Western Yangtze River Delta Region, China: Insights Gained From Ground-Based Lidar and Satellite Observations

doi:10.1029/2020EA001533

	Impacts of Transboundary Dust Transport on Aerosol Pollution in the Western Yangtze River Delta Region, China: Insights Gained From Ground-Based Lidar and Satellite Observations
	Yang, Hao 2,3,4; Fang, Zhiyuan 2,3,4; Cao, Ye 2,3,4; Xie, Chenbo 2,4; Zhou, Tian 1; Wang, Bangxin 2,4; Xing, Kunming 2,4; Lolli, Simone 5
刊名	EARTH AND SPACE SCIENCE
	2021-03-01
卷号	8
DOI	10.1029/2020EA001533
通讯作者	Xie, Chenbo(cbxie@aiofm.ac.cn)
英文摘要	Dust storms pose a serious threat to air quality and public health through large-scale, long-distance transport. In early April 2018, two severe dust storm events occurred in the Taklimakan and Gobi Deserts in northwestern China. The advected air-masses containing dust traveled eastward over long distances reaching the western Yangtze River Delta region (WYRDR) with local PM 10 peak concentrations of 190 and 410 mu g/m(3) on April 6 and April 11, 2018, respectively. Satellite remote sensing and ground-based lidar observations showed that the first dust event was transported to WYRDR at an altitude of <5 km, while the second transport height was at an altitude of <3 km. The first one was accompanied with the dry-cold air mass in the northwest moving eastward and southward. By comparison, in the second event, the dust aerosols were mixed with anthropogenic aerosols from southwestern China. Meanwhile, as southerly warm-humid air flows prevailed at near-surface layer over the WYRDR in the second event, the associated higher relative humidity potentially induced hygroscopic growth of polluted dust aerosols, resulting in explosive growth of PM10. In addition, the average depolarization ratio of aerosols over WYRDR on April 6 was 0.3, while on April 11 it was 0.2, indicating that the previous pollution event featured more obvious nonspherical characteristics of aerosols. Our findings provide scientific evidence that transboundary dust events and resultant local PM10 pollution are closely related to various transport trajectories of dust aerosols as well as the local vertical wind profiles and surface humidity conditions.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA17040524] ; Key Program of 13th 5-year plan, CASHIPS[KP-2019-05]
WOS研究方向	Astronomy & Astrophysics ; Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000635218300030
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; Key Program of 13th 5-year plan, CASHIPS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/121479]
专题	中国科学院合肥物质科学研究院
通讯作者	Xie, Chenbo
作者单位	1.Lanzhou Univ, Sch Atmospher Sci, Lanzhou, Gansu, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, Hefei, Peoples R China 3.Univ Sci & Technol China, Sci Isl Branch, Grad Sch, Hefei, Peoples R China 4.Adv Laser Technol Lab Anhui Prov, Hefei, Peoples R China 5.Natl Res Council CNR, Inst Methodol Environm Anal, Contrada S Loja Snc, Rome, Italy
推荐引用方式 GB/T 7714	Yang, Hao,Fang, Zhiyuan,Cao, Ye,et al. Impacts of Transboundary Dust Transport on Aerosol Pollution in the Western Yangtze River Delta Region, China: Insights Gained From Ground-Based Lidar and Satellite Observations[J]. EARTH AND SPACE SCIENCE,2021,8.
APA	Yang, Hao.,Fang, Zhiyuan.,Cao, Ye.,Xie, Chenbo.,Zhou, Tian.,...&Lolli, Simone.(2021).Impacts of Transboundary Dust Transport on Aerosol Pollution in the Western Yangtze River Delta Region, China: Insights Gained From Ground-Based Lidar and Satellite Observations.EARTH AND SPACE SCIENCE,8.
MLA	Yang, Hao,et al."Impacts of Transboundary Dust Transport on Aerosol Pollution in the Western Yangtze River Delta Region, China: Insights Gained From Ground-Based Lidar and Satellite Observations".EARTH AND SPACE SCIENCE 8(2021).