DOI: 10.1007/s00382-015-2504-6
Scopus记录号: 2-s2.0-84945584292
论文题名: Variation of circulation and East Asian climate associated with anomalous strength and displacement of the East Asian trough
作者: Leung M.Y.-T. ; Zhou W.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 45, 期: 2017-09-10 起始页码: 2713
结束页码: 2732
语种: 英语
英文关键词: East Asian trough
; East Asian winter monsoon
; Stationary and transient eddy
; Storm track
英文摘要: Variations of the East Asian trough (EAT) and its relationship with the East Asian climate are documented in this study. The variations investigated include the trough’s strength and its meridional and zonal displacements. Anomalous cold (warmth) in Southeast Asia is concurrent with the southward (northward) displacement of the EAT. The southward displacement of the EAT is likely associated with an anomalous strong Siberian high and Aleutian low, which manipulate anomalous northerly wind between them. On the other hand, the temperature in northeast Asia is influenced by both the strength and the zonal displacement of the trough. These properties of the EAT are closely linked to temperatures in the northern and southern portions of East Asia. The relation between variations of the EAT and the East Asian winter monsoon is also examined. In addition, the relation between the EAT and transient eddies is studied. Anomalous transient eddies concurrent with variations of the EAT are contributed by a localized anomalous meridional gradient due to the variation of stationary eddies and zonal symmetric structure. Variations in the polar vortex are significant for variations in the strength of the EAT. To investigate the role of eddies in the anomalous evolution of the EAT, we also study stationary and transient eddy forcing on the evolution of anomalous EAT and zonal symmetric structures using wave activity flux and extended E-vectors. © 2015, Springer-Verlag Berlin Heidelberg. 资助项目: CityU, City University of Hong Kong
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53957
Appears in Collections: 过去全球变化的重建
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作者单位: Shenzhen Research Institute, City University of Hong Kong, Shenzhen, China; Guy Carpenter Asia-Pacific Climate Impact Centre, School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, SAR, China
Recommended Citation:
Leung M.Y.-T.,Zhou W.. Variation of circulation and East Asian climate associated with anomalous strength and displacement of the East Asian trough[J]. Climate Dynamics,2015-01-01,45(2017-09-10)