globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-012-1522-x
Scopus记录号: 2-s2.0-84881023775
论文题名:
Potential impacts of northeastern Eurasian snow cover on generation of dust storms in northwestern China during spring
作者: Lee Y.G.; Ho C.-H.; Kim J.; Kim J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 41, 期:2017-03-04
起始页码: 721
结束页码: 733
语种: 英语
英文关键词: Asian dust ; China ; Dust storm ; Eurasia ; Snow-water equivalent
英文摘要: The effects of the northeastern Eurasian snow cover on the frequency of spring dust storms in northwestern China have been examined for the period 1979-2007. Averaged over all 43 stations in northwestern China, a statistically significant relationship has been found between dust-storm frequency (DSF) and Eurasian snow-water equivalent (SWE) during spring: mean DSF of 7.4 and 3.3 days for years of high- and low SWE, respectively. Further analyses reveal that positive SWE anomalies enhance the meridional gradients of the lower tropospheric temperatures and geopotential heights, thereby strengthening westerly jets and zonal wind shear over northwestern China and western Inner Mongolia of China, the regions of major dust sources. The anomalous atmospheric circulation corresponding to the Eurasian SWE anomalies either reinforces or weakens atmospheric baroclinicity and cyclogenesis, according to the sign of the anomaly, to affect the spring DSF. This study suggests that Eurasian SWE anomalies can be an influential factor of spring DSF in northwestern China and western Inner Mongolia of China. © 2012 Springer-Verlag.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54847
Appears in Collections:过去全球变化的重建

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作者单位: Climate Physics Laboratory, School of Earth and Environmental Sciences, Seoul National University, Seoul, 151-747, South Korea; Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea; Dept. of Atmospheric and Oceanic Sciences and Joint Inst. for Regional Earth Sys. Sci. and Eng., University of California Los Angeles, Los Angeles, CA, United States

Recommended Citation:
Lee Y.G.,Ho C.-H.,Kim J.,et al. Potential impacts of northeastern Eurasian snow cover on generation of dust storms in northwestern China during spring[J]. Climate Dynamics,2013-01-01,41(2017-03-04)
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