Dust Storms in North China in 2002: A Case Study of the Low Frequency Oscillation

被引：5

作者：

范可 ^{[1
]}

王会军 ^{[2
]}

机构：

[1] Nansen-Zhu International Research Centre,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing Department of Atmospheric Science,Yunnan University,Kunming Graduate University of the Chinese Academy of Sciences,Beijing

[2] Department of Atmospheric Science,Yunnan University,Kunming

来源：

Advances in Atmospheric Sciences | 2007年 / 01期

关键词：

dust storm events; low frequency oscillation; mean meridional circulation and local circulation; relationship;

D O I：

暂无

中图分类号：

P425.55 [];

学科分类号：

0706 ; 070601 ;

摘要：

<正>The low frequency oscillation in both hemispheres and its possible role in the dust weather storm events over North China in 2002 are analyzed as a case study. Results show that the Aleutian Low is linked with the Circumpolar Vortex in the Southern Hemisphere on a 30-60-day oscillation, with a weak Circumpolar Vortex tending to deepen the Aleutian Low which may be helpful for the generation of dust storm events. The possible mechanism behind this is the inter-hemispheric interaction of the mean meridional circulation, with the major variability over East Asia. The zonal mean westerly wind at high latitudes of the Southern Hemisphere in the upper level troposphere may lead that of the Northern Hemisphere, which then impacts the local circulation in the Northern Hemisphere. Thus, the low frequency oscillation teleconnection is one possible linkage in the coupling between the Southern Hemisphere circulation and dust events over North China. However, the interannual variation of the low frequency oscillation is unclear.

引用

页码：15 / 23

页数：9

共 28 条

[1]

Definition of Antarctic oscillation index. Gong, D. Y.,and S. W Wang. Geophysical Research Letters . 1999

[2]

Detection of a 40-50 day oscillation in the zonal wind in the tropical Pacific. Madden, R. A.,and P. R Julian. Journal of the Atmospheric Sciences . 1971

[3]

Characteristic Analysis of China dust storm in 2002. Fang Zongyi,and Wang Wei. Journal of Applied Meteorological Science . 2003

[4]

Northeast Asian dust storms: Real-time numerical prediction and validation. Shao, Y. P.,Y. Yang,J. J. Wang,Z. X. Song,Lame M. Leslie,C. H. Dong,Z. H. Zhang,Z. H. Lin et al. J. Geophys. Res . 2003

[5]

Variations of the dust storm in China and its climatic control. Qian, W. H.,L S Quan,and S. Y. Shi. J. Climate . 2002

[6]

Annular modes in the extratropical circulation: PartⅠ: Month to month variability. Thompson, D. W. J.,and J. M Wallace. Journal of Climate . 2000

[7]

An observational study of tropicalmidlatitude interaction on intraseasonal time scales during winter. Liebmann, B.,and D. L Hartmann. Journal of the Atmospheric Sciences . 1984

[8]

Indices of the Southern Hemisphere zonal wind. Kindson,J. W. J. Climate . 1988

[9]

Antarctic Oscillation and the dust weather frequency in North China. Fan K.,and H. J. Wang. Geophys. Res. Lett . 2004

[10]

Seasonal Oscillation in atmosphere. Li Chongyin. Scientia Atmospheric Sinica . 1990

← 1 2 3 →