DOI: 10.1002/2016JD025495
论文题名: The influence of local sea surface temperatures on Australian east coast cyclones
作者: Pepler A.S. ; Alexander L.V. ; Evans J.P. ; Sherwood S.C.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
卷: 121, 期: 22 起始页码: 352
结束页码: 363
语种: 英语
英文关键词: Australia
; midlatitude cyclone
; regional climate model
; SST
Scopus关键词: climate modeling
; ensemble forecasting
; extratropical cyclone
; flooding
; midlatitude environment
; Northern Hemisphere
; regional climate
; sea surface temperature
; severe weather
; Southern Hemisphere
; western boundary current
; Atlantic Ocean
; Australia
; Gulf Stream
; Kuroshio Current
; Pacific Ocean
英文摘要: Cyclones are a major cause of rainfall and extreme weather in the midlatitudes and have a preference for genesis and explosive development in areas where a warm western boundary current borders a continental landmass. While there is a growing body of work on how extratropical cyclones are influenced by the Gulf Stream and Kuroshio Current in the Northern Hemisphere, there is little understanding of similar regions in the Southern Hemisphere including the Australian east coast, where cyclones that develop close to the coast are the main cause of severe weather and coastal flooding. This paper quantifies the impact of east Australian sea surface temperatures (SSTs) on local cyclone activity and behavior, using three different sets of sea surface temperature boundary conditions during the period 2007–2008 in an ensemble of Weather Research and Forecasting Model physics parameterizations. Coastal sea surface temperatures are demonstrated to have a significant impact on the overall frequency of cyclones in this region, with warmer SSTs acting as a trigger for the intensification of weak or moderate cyclones, particularly those of a subtropical nature. However, sea surface temperatures play only a minor role in the most intense cyclones, which are dominated by atmospheric conditions. ©2016. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62798
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, NSW, Australia
Recommended Citation:
Pepler A.S.,Alexander L.V.,Evans J.P.,et al. The influence of local sea surface temperatures on Australian east coast cyclones[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(22)