气候变化领域集成服务门户(CCPortal): Dust Emission from Gobi under Different Dust Content Conditions: A Wind Tunnel Study atop the Mogao Grottoes

CCPortal

DOI	10.3390/atmos12111498
	Dust Emission from Gobi under Different Dust Content Conditions: A Wind Tunnel Study atop the Mogao Grottoes
	Liang, Linhao; Zhang, Weimin; Tan, Lihai; Chen, Shuyi
通讯作者	Zhang, WM (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China. ; Zhang, WM (通讯作者)，Chinese Acad Sci, Dunhuang Gobi & Desert Ecol & Environm Res Stn, Northwest Inst Ecoenvironm & Resources, Dunhuang 736200, Peoples R China.
发表日期	2021
EISSN	2073-4433
卷号	12 期号:11
英文摘要	Dust emission from the Gobi desert is one of the major sources of global atmospheric aerosols. However, the main factors affecting dust emission from Gobi remain poorly understood. In this paper, field wind tunnel experiments were performed atop the Mogao Grottoes to determine the variation characteristics of the vertical dust flux (F) of particulate matter less than 10 mu m (PM10) for Gobi surfaces with different dust content and wind speeds under external sand supply. The results demonstrate that F obeyed a power function with increasing friction velocity (U-), and increased exponentially with the increasing surface dust content (C). The index of n-value in the formula F proportional to U-(n) is taken in the range of 2.02-2.63 under the surface of 27.3-47.3% dust content (<100 mu m), and the dust emission rate was significantly enhanced when the surface dust content exceeded approximately 37%. This study indicates that wind force is the primary dynamic condition affecting Gobi dust emission, and that surface dust content is a significant factor in determining the quantity of dust emission. Furthermore, the contribution of wind force to PM10 emission is greater than the surface dust content, and the higher the height, the greater the weight of friction velocity.
关键词	EROSION GRAVEL SOIL SIMULATION PARTICLES DESERTS
英文关键词	Gobi; PM10; vertical emission flux; wind tunnel; Mogao Grottoes
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000760037900002
来源期刊	ATMOSPHERE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253617
作者单位	[Liang, Linhao; Zhang, Weimin; Tan, Lihai; Chen, Shuyi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China; [Liang, Linhao; Chen, Shuyi] Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; [Liang, Linhao; Zhang, Weimin; Tan, Lihai; Chen, Shuyi] Chinese Acad Sci, Dunhuang Gobi & Desert Ecol & Environm Res Stn, Northwest Inst Ecoenvironm & Resources, Dunhuang 736200, Peoples R China
推荐引用方式 GB/T 7714	Liang, Linhao,Zhang, Weimin,Tan, Lihai,et al. Dust Emission from Gobi under Different Dust Content Conditions: A Wind Tunnel Study atop the Mogao Grottoes[J]. 中国科学院西北生态环境资源研究院,2021,12(11).
APA	Liang, Linhao,Zhang, Weimin,Tan, Lihai,&Chen, Shuyi.(2021).Dust Emission from Gobi under Different Dust Content Conditions: A Wind Tunnel Study atop the Mogao Grottoes.ATMOSPHERE,12(11).
MLA	Liang, Linhao,et al."Dust Emission from Gobi under Different Dust Content Conditions: A Wind Tunnel Study atop the Mogao Grottoes".ATMOSPHERE 12.11(2021).