干旱区生态环境知识资源中心(Arid): Size distribution of PM20 observed to the north of the Tibetan Plateau

Arid

DOI	10.1007/s11629-020-6086-3
	Size distribution of PM20 observed to the north of the Tibetan Plateau
	Zhou Cheng-long; Yang Fan; Huo Wen; Mamtimn Ali; Yang Xing-hua
通讯作者	Yang, XH (corresponding author), China Meteorol Adm, Inst Desert Meteorol, Urumqi 830002, Peoples R China. ; Yang, XH (corresponding author), China Meteorol Adm, Taklimakan Desert Meteorol Field Expt Stn, Urumqi 830002, Peoples R China.
来源期刊	JOURNAL OF MOUNTAIN SCIENCE
ISSN	1672-6316
EISSN	1993-0321
出版年	2021
卷号	18 期号:2 页码:367-376
英文摘要	The size distribution of airborne dust particles is an important parameter in the measurement of dust emissions due to wind erosion, and a quantitative and accurate description is necessary. Observations regarding the size distribution of airborne dust particles are currently lacking in Tibetan Plateau (TP). This study aims to obtain a dust particle size distribution and compare the difference in spatial distribution at a field site (FS) and two urban observation sites (Minfeng and Hetian), in the north of the TP, under the condition of the dust-days and clear-days. The observation data was collected from 5 July to 4 August, 2019. The mass concentration of dust (PM20) was measured with a 10-stage quartz crystal microbalance cascade impactor. The results suggested that 91.9% of the particles were less than 1.4 mu m on clear-days, and particles of d >= 1.4 mu m increased to 27.2% with the occurrence of the dust events. More than 80% of the airborne dust particles were less than 1.4 mu m for each friction velocity. The proportion of d < 0.7 mu m was the greatest at 3.0 m (above the surface, similarly hereinafter) on dust-days, while the proportion of d > 0.7 mu m was the greatest at 0.5 m on clear-days. During urban observation, with the occurrence of dust events, the concentration of a particle size greater than 2.5 mu m increased most significantly in Minfeng, while the concentration of a particle size less than 0.7 mu m increased most significantly in Hetian. Moreover, the proportion of particles with d < 0.7 mu m had the smallest difference, while the proportion of particles with d > 1.4 mu m had the most obvious difference among these three sites.
英文关键词	Dust-day Clear-day Friction velocity Field Urban Coefficient variation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000608965600002
WOS关键词	GRAIN-SIZE ; WIND EROSION ; MINERAL DUST ; AEROSOL ; DESERT ; IMPACT ; SOIL ; TRANSPORT ; STORMS ; DUNES
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348026
作者单位	[Zhou Cheng-long; Yang Fan; Huo Wen; Mamtimn Ali; Yang Xing-hua] China Meteorol Adm, Inst Desert Meteorol, Urumqi 830002, Peoples R China; [Zhou Cheng-long; Yang Fan; Huo Wen; Mamtimn Ali; Yang Xing-hua] China Meteorol Adm, Taklimakan Desert Meteorol Field Expt Stn, Urumqi 830002, Peoples R China
推荐引用方式 GB/T 7714	Zhou Cheng-long,Yang Fan,Huo Wen,et al. Size distribution of PM20 observed to the north of the Tibetan Plateau[J],2021,18(2):367-376.
APA	Zhou Cheng-long,Yang Fan,Huo Wen,Mamtimn Ali,&Yang Xing-hua.(2021).Size distribution of PM20 observed to the north of the Tibetan Plateau.JOURNAL OF MOUNTAIN SCIENCE,18(2),367-376.
MLA	Zhou Cheng-long,et al."Size distribution of PM20 observed to the north of the Tibetan Plateau".JOURNAL OF MOUNTAIN SCIENCE 18.2(2021):367-376.