DOI: 10.1002/2015GL066319
论文题名: Evidence of local sea surface temperatures overriding the southeast Australian rainfall response to the 1997-1998 El Niño
作者: Van Rensch P. ; Gallant A.J.E. ; Cai W. ; Nicholls N.
刊名: Geophysical Research Letters
ISSN: 0094-8479
EISSN: 1944-8210
出版年: 2015
卷: 42, 期: 21 起始页码: 9449
结束页码: 9456
语种: 英语
英文关键词: AMIP
; El Niño
; local sea surface temperature
; stochastic processes
Scopus关键词: Atmospheric temperature
; Earth atmosphere
; Nickel
; Rain
; Random processes
; Stochastic systems
; Submarine geophysics
; Surface properties
; Surface waters
; AMIP
; Atmospheric general circulation models
; Atmospheric process
; Australian rainfall
; Eastern equatorial Pacific
; Rainfall distribution
; Sea surface temperature (SST)
; Southeast australia
; Oceanography
; atmospheric forcing
; atmospheric general circulation model
; El Nino
; ensemble forecasting
; precipitation intensity
; sea surface temperature
; spatial distribution
; spatiotemporal analysis
; stochasticity
; Australia
; Pacific Ocean
; Pacific Ocean (Equatorial)
英文摘要: El Niño events typically bring rainfall deficits to southeast Australia (SEA), for example, during the El Niño of 1982-1983. However, SEA experienced near average rainfall during the similar El Niño of 1997-1998. Using an ensemble of atmospheric general circulation models (AGCMs) forced with observed SSTs, we demonstrate that the different September-November rainfall during the 1982 and 1997 events is primarily explained by differences in SST forcing from outside the central and eastern equatorial Pacific. The AGCMs reproduce an observed relationship between SEA rainfall and SSTs to the northeast of Australia. Significantly, cooler northeast Australian SSTs during 1982-1983 shifted the rainfall distribution, making a rainfall deficit more likely (relative to the situation in 1997-1998). However, stochastic atmospheric processes can modulate the El Niño and regional SST influence, and the use of an ensemble of AGCM simulations allows the separation of the effects of stochastic atmospheric processes and SST forcing. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955214229&doi=10.1002%2f2015GL066319&partnerID=40&md5=cb477567a5df1969afe5a2c53f574ef4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8095
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: CSIRO Oceans and Atmosphere, Aspendale, VIC, Australia
Recommended Citation:
Van Rensch P.,Gallant A.J.E.,Cai W.,et al. Evidence of local sea surface temperatures overriding the southeast Australian rainfall response to the 1997-1998 El Niño[J]. Geophysical Research Letters,2015-01-01,42(21).