气候变化领域集成服务门户(CCPortal): Simulated regional transport structures and budgets of dust aerosols during a typical springtime dust storm in the Tarim Basin, Northwest China

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DOI	10.1016/j.atmosres.2020.104892
	Simulated regional transport structures and budgets of dust aerosols during a typical springtime dust storm in the Tarim Basin, Northwest China
	Meng L.; Yang X.; Zhao T.; He Q.; Mamtimin A.; Wang M.; Huo W.; Yang F.; Zhou C.; Pan H.
发表日期	2020
ISSN	0169-8095
卷号	238
英文摘要	Occupying an area of about 1,020,000 km2 with the sparse vegetation and the Taklimakan Desert(TD), The Tarim Basin (TB) is isolated by the surrounding mountains and plateaus, especially to the north of the Tibetan Plateau (TP) with a large drop in elevation. An intense dust storm occurring over TB, Northwest China from April 27 to May 1, 2015 was simulated by using the Weather Research and Forecasting model with chemistry (WRF-Chem v3.8.1). The sources of dust emissions were centered over the northeastern TB with the high dust emission flux reaching 24μgm−2 s−1 injected by strong near-surface northeasterly winds from basin mouth invading the TD. A large amount of dust aerosols accumulated in the windward northern slope of the TP. Dry deposition is the dominant removal process of dust aerosols from the atmosphere over the arid TB. The spatial distribution of dust dry deposition in the TB was similar to the columnar dust loading pattern during this dust storm event. With the impacts of the TB deep terrain structures on atmospheric circulation, the high column loading of dust aerosols was concentrated over the southeastern TB, where dust aerosols mainly accumulated at the lower troposphere below 3000 m. Once dust aerosols were lifted at a high elevation (>3500 m), they were exported from the TB driven by the westerlies in the free troposphere, and the zonal transport flux of dust aerosols (>3000 μgm−2 s−1) peaked at an elevation of approximately 4000 m along 41° N over the TB. The eastern border of TB was found to be the largest contributors to dust export from the TB. It was estimated for this intense dust storm that among the dust aerosols emitted from the dust emission sources over the TD, about 22.28% of dust aerosols were relatively inefficiently exported for the downwind dust regional transport from the TB compared to about 27.17% dust aerosols deposited on the basin surface, and a high fraction of about 50.54% dust aerosols suspending in the atmosphere over the TB, implying a significant implication of dust aerosols from the TD for climate and environment over the central Asian region. © 2020
英文关键词	Aerosol budget; Dust aerosols; Regional transport; Tarim Basin; WRF-Chem simulation
学科领域	Aerosols; Atmospheric movements; Budget control; Deposition; Landforms; Storms; Troposphere; Weather forecasting; Atmospheric circulation; Dust aerosols; Lower troposphere; Regional transport; Tarim Basin; Terrain structures; Weather research and forecasting models; WRF-Chem simulation; Dust; aerosol; atmospheric chemistry; atmospheric modeling; atmospheric transport; dry deposition; dust; dust storm; spring (season); China; Taklimakan Desert; Tarim Basin; Xinjiang Uygur
语种	英语
scopus关键词	Aerosols; Atmospheric movements; Budget control; Deposition; Landforms; Storms; Troposphere; Weather forecasting; Atmospheric circulation; Dust aerosols; Lower troposphere; Regional transport; Tarim Basin; Terrain structures; Weather research and forecasting models; WRF-Chem simulation; Dust; aerosol; atmospheric chemistry; atmospheric modeling; atmospheric transport; dry deposition; dust; dust storm; spring (season); China; Taklimakan Desert; Tarim Basin; Xinjiang Uygur
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120428
作者单位	Institute of Desert Meteorology, China Meteorological Administration, Urumqi, 830002, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science &Technology, Nanjing, Jiangsu 210044, China
推荐引用方式 GB/T 7714	Meng L.,Yang X.,Zhao T.,et al. Simulated regional transport structures and budgets of dust aerosols during a typical springtime dust storm in the Tarim Basin, Northwest China[J],2020,238.
APA	Meng L..,Yang X..,Zhao T..,He Q..,Mamtimin A..,...&Pan H..(2020).Simulated regional transport structures and budgets of dust aerosols during a typical springtime dust storm in the Tarim Basin, Northwest China.Atmospheric Research,238.
MLA	Meng L.,et al."Simulated regional transport structures and budgets of dust aerosols during a typical springtime dust storm in the Tarim Basin, Northwest China".Atmospheric Research 238(2020).