DOI: 10.1002/2014GL061736
论文题名: Modes of climate variability and heat waves in Victoria, southeastern Australia
作者: Parker T.J. ; Berry G.J. ; Reeder M.J. ; Nicholls N.
刊名: Geophysical Research Letters
ISSN: 0094-9760
EISSN: 1944-9491
出版年: 2014
卷: 41, 期: 19 起始页码: 6926
结束页码: 6934
语种: 英语
英文关键词: ENSO
; heat waves
; MJO
; SAM
Scopus关键词: Atmospheric pressure
; Heat convection
; Nickel
; Precipitation (meteorology)
; ENSO
; Heat waves
; Madden-Julian oscillation
; MJO
; SAM
; South-eastern Australia
; Southern Annular Mode
; Southern oscillation
; Climatology
; anticyclone
; climate modeling
; climate variation
; summer
; thermal convection
; vorticity
; Australia
; Victoria [Australia]
英文摘要: Summertime heat waves in the southeastern state of Victoria, Australia, are associated with broad anticyclonic upper level potential vorticity (PV) anomalies. The current research establishes the relationship between heat waves, precipitation, and three modes of climate variability of importance for rainfall in Australia: the El Niño-Southern Oscillation (ENSO), Madden-Julian Oscillation (MJO), and Southern Annular Mode (SAM). Heat waves in Victoria in summer are more common during phases 3-6 of the MJO (when convection is enhanced over the eastern Indian Ocean, Maritime Continent, and western Pacific Ocean) and La Niña phases of ENSO. The PV-Theta (Θ) structure of the heat wave and pattern of convection varies with the phase of each mode of variability. Enhanced tropical convection results in a heat wave characterized by a monopole of anticyclonic PV, whereas suppressed convection is associated with a dipole of anticyclonic and cyclonic PV. Key Points Heat waves are more common in La Niña phases of ENSO and phases 3-6 of the MJOThe PV-Theta and convection patterns vary with the phase of each mode ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911164247&doi=10.1002%2f2014GL061736&partnerID=40&md5=0ae6ec500fa58ce125a5bce1ae5ccd1c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7024
Appears in Collections: 气候减缓与适应
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作者单位: Monash Weather and Climate, School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC, Australia
Recommended Citation:
Parker T.J.,Berry G.J.,Reeder M.J.,et al. Modes of climate variability and heat waves in Victoria, southeastern Australia[J]. Geophysical Research Letters,2014-01-01,41(19).