干旱区生态环境知识资源中心(Arid): The Temporal-Spatial Variations and Potential Causes of Dust Events in Xinjiang Basin During 1960-2015

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DOI	10.3389/fenvs.2021.727844
	The Temporal-Spatial Variations and Potential Causes of Dust Events in Xinjiang Basin During 1960-2015
	Mu, Lamei; Su, Jing; Mo, Xinyue; Peng, Nan; Xu, Ying; Wang, Meihua; Wang, Jinyan
通讯作者	Su, J ; Mo, XY (corresponding author), Lanzhou Univ, Coll Atmospher Sci, Lanzhou, Peoples R China.
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2021
卷号	9
英文摘要	Dust events not only cause local ecosystem degradation and desertification, but also have profound impacts on regional and global climate system, as well as air quality and human health. Dust events in Xinjiang Basin, as the important dust source of Eastern Asia, have undergone a significant change under the global warming background and may be in a new active period after 2000, which is worthy of study. This study provides the temporal and spatial variations of dust events in the Xinjiang Basin based on surface meteorological station observation data during 1960-2015. The results show that Southern Xinjiang is the main dust occurrence region where dust events are significantly more than that in the Northern Xinjiang, and each year more than 73% of dust events occurred in spring and summer. The dust index (DI), which is defined to represent the large-scale variation of dust event, shows a significant downward trend during the past 56 years with a linear decreasing rate -8.2 years(-1) in Southern Xinjiang. The DI is positively correlated to surface wind speed with a mean correlation coefficient of 0.79. The declining trend of surface wind speed could explain dust events variation during 1960-2000. But in the new active period after 2000, the increase of DI is not consistent with the rising wind speed with the correlation coefficient decreasing to 0.34. It is found that, compared with 1960-1999, the average annual precipitation and frequency increased by 17.4 and 13% during 2000-2015, respectively, and the NDVI also increased at the same time, which indicates that the surface condition changes induced by the increase of precipitation might suppress the occurrence of dust. Moreover, the analysis of high-altitude wind field shows that the variation of the East Asian general circulation's intensity, dominating the upper-level wind fields in the Xinjiang basin, will change the surface wind speed and precipitation, and further affect the occurrence of dust events.
英文关键词	Xinjiang basin dust event dust index temporal-spatial variation wind precipitation NDVI
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000728849300001
WOS关键词	AEROSOL ; TAKLIMAKAN ; HEIGHT ; IMPACT ; STORM ; WIND ; GOBI
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/2XILL650/373612
作者单位	[Mu, Lamei; Su, Jing; Mo, Xinyue; Peng, Nan; Xu, Ying; Wang, Meihua; Wang, Jinyan] Lanzhou Univ, Coll Atmospher Sci, Lanzhou, Peoples R China; [Mu, Lamei] Longxi Meteorol Bur Gansu Prov, Longxi, Peoples R China
推荐引用方式 GB/T 7714	Mu, Lamei,Su, Jing,Mo, Xinyue,et al. The Temporal-Spatial Variations and Potential Causes of Dust Events in Xinjiang Basin During 1960-2015[J],2021,9.
APA	Mu, Lamei.,Su, Jing.,Mo, Xinyue.,Peng, Nan.,Xu, Ying.,...&Wang, Jinyan.(2021).The Temporal-Spatial Variations and Potential Causes of Dust Events in Xinjiang Basin During 1960-2015.FRONTIERS IN ENVIRONMENTAL SCIENCE,9.
MLA	Mu, Lamei,et al."The Temporal-Spatial Variations and Potential Causes of Dust Events in Xinjiang Basin During 1960-2015".FRONTIERS IN ENVIRONMENTAL SCIENCE 9(2021).