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DOI	10.1016/j.atmosres.2021.105886
	Characterization of dust activation and their prevailing transport over East Asia based on multi-satellite observations
	Tao M.; Chen L.; Wang J.; Wang L.; Wang W.; Lin C.; Gui L.; Wang L.; Yu C.; Wang Y.
发表日期	2022
ISSN	0169-8095
卷号	265
英文摘要	Mineral dust from the deserts and arid areas in East Asia plays a critical role in regional climate and air quality. Based on integrated satellite observations and MERRA-2 reanalysis, we provide an observational insight into dust activities governing spatial patterns of dust aerosols over East Asia. With Moderate resolution Imaging Spectroradiometer Aerosol Optical Depth (AOD) and Ozone Monitoring Ultraviolet Aerosol Index (UVAI), fixed dust-active areas with distinct spatial-temporal differences are revealed. Besides the few dust storms mostly in spring, unnoticeable but frequent dust plumes are found to be the predominant sources of prevailing dust particles over East Asia. Compared with the active dust sources in Taklimakan Desert throughout the year, dust activities in Gobi deserts are at a much lower frequency. The elevated dust plumes are concentrated within 2–6 km over the deserts with large seasonal variations, and can be transported downstream to eastern China and Sichuan Basin within 3–5 days. Moreover, owing to the lack of enough strong winds, these dust plumes tend to be concentrated above the haze layers near surface in eastern China. The intense temperature inversion during winter and early spring can delay the mixing of dust-pollution. Despite a generally reasonable performance in dust AOD, MERRA-2 reanalysis exhibits some uncertainties in reproducing spatial locations of dust hotspots, dust concentration, and transport process. Our results emphasize significant role of the inapparent but prevalent dust plumes in air quality and in climate effects of East Asia. © 2021 Elsevier B.V.
英文关键词	Dust transport; Dust-pollution mixing; East Asia; Satellite
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/236536
作者单位	Key Laboratory of Regional Ecology and Environmental Change, School of Geography and Information Engineering, China University of Geosciences, Wuhan, 430074, China; State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, 100101, China; Center for Global and Regional Environmental Research, The University of Iowa, Iowa City, IA 52242, United States; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Key Laboratory of Physical Oceanography, College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao, 266100, China; Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, 999077, Hong Kong
推荐引用方式 GB/T 7714	Tao M.,Chen L.,Wang J.,et al. Characterization of dust activation and their prevailing transport over East Asia based on multi-satellite observations[J],2022,265.
APA	Tao M..,Chen L..,Wang J..,Wang L..,Wang W..,...&Wang Y..(2022).Characterization of dust activation and their prevailing transport over East Asia based on multi-satellite observations.Atmospheric Research,265.
MLA	Tao M.,et al."Characterization of dust activation and their prevailing transport over East Asia based on multi-satellite observations".Atmospheric Research 265(2022).