DOI: 10.1007/s00382-015-2573-6
Scopus记录号: 2-s2.0-84955723876
论文题名: Zonal winds and southeast Australian rainfall in global and regional climate models
作者: Pepler A.S. ; Alexander L.V. ; Evans J.P. ; Sherwood S.C.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 46, 期: 2017-01-02 起始页码: 123
结束页码: 133
语种: 英语
英文关键词: Australia
; Circulation
; Downscaling
; Models
; Rainfall
英文摘要: Southeast Australia is a region of high rainfall variability related to major climate drivers, with a long-term declining trend in cool-season rainfall. Projections of future rainfall trends are uncertain in this region, despite projected southward shifts in the subtropical ridge and mid-latitude westerlies. This appears to be related to a poor representation of the spatial relationships between rainfall variability and zonal wind patterns across southeast Australia in the latest Coupled Model Intercomparison Project ensemble, particularly in the areas where weather systems embedded in the mid-latitude westerlies are the main source of cool-season rainfall. Downscaling with regional climate models offers improvements in the mean rainfall climatology, and shows some ability to correct for poor modelled relationships between rainfall and zonal winds along the east coast of Australia. However, it provides only minor improvements to these relationships in southeast Australia, despite the improved representation of topographic features. These results suggest that both global and regional climate models may fail to translate projected circulation changes into their likely rainfall impacts in southeast Australia. © 2015, Springer-Verlag Berlin Heidelberg. 资助项目: ARC, Australian Research Council
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53859
Appears in Collections: 过去全球变化的重建
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作者单位: The Australian Research Council Centre of Excellence for Climate System Science, and Climate Change Research Centre, University of New South Wales, Sydney, Australia
Recommended Citation:
Pepler A.S.,Alexander L.V.,Evans J.P.,et al. Zonal winds and southeast Australian rainfall in global and regional climate models[J]. Climate Dynamics,2016-01-01,46(2017-01-02)