DOI: 10.1002/grl.50427
论文题名: Asymmetry in the response of eastern Australia extreme rainfall to low-frequency Pacific variability
作者: King A.D. ; Alexander L.V. ; Donat M.G.
刊名: Geophysical Research Letters
ISSN: 0094-9058
EISSN: 1944-8789
出版年: 2013
卷: 40, 期: 10 起始页码: 2271
结束页码: 2277
语种: 英语
英文关键词: Australia
; climate extremes
; ENSO
; IPO
; rainfall
; reanalysis
Scopus关键词: Australia
; Climate extremes
; ENSO
; IPO
; Reanalysis
; Atmospheric pressure
; Rain
; Climatology
; asymmetry
; data set
; decadal variation
; El Nino-Southern Oscillation
; flooding
; frequency analysis
; La Nina
; precipitation (climatology)
; prediction
; rainfall
; Australia
; Pacific Ocean
英文摘要: This study investigates relationships between variability in the Pacific and extreme rainfall in eastern Australia. Using an index of extreme precipitation derived from a daily gridded precipitation data set from 1900 to 2011, we find that a nonlinear relationship between El Niño-Southern Oscillation and extreme rainfall exists. That is, the strength of a La Niña episode has a much greater influence on the intensity and duration of extreme rainfall than the magnitude of an El Niño episode. This relationship is found in both interpolated observations and reanalysis data and may be explained, in part, by shifts in the divergence of moisture flux. There is significant decadal variability in the relationship, such that the asymmetry is enhanced during Interdecadal Pacific Oscillation (IPO)-negative events and is nonexistent during IPO-positive phases. This information has the potential to be of great use in the seasonal prediction of intense rainfall events that lead to flooding. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879909568&doi=10.1002%2fgrl.50427&partnerID=40&md5=2a33cf501ae93a9d6a8b7c836fc803d6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6322
Appears in Collections: 气候减缓与适应
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作者单位: Climate Change Research Centre, Mathews Bldg., University of New South Wales, Sydney, NSW 2052, Australia
Recommended Citation:
King A.D.,Alexander L.V.,Donat M.G.. Asymmetry in the response of eastern Australia extreme rainfall to low-frequency Pacific variability[J]. Geophysical Research Letters,2013-01-01,40(10).