DOI: 10.1175/JCLI-D-16-0686.1
Scopus记录号: 2-s2.0-85021085081
论文题名: A midlatitude influence on Australian monsoon bursts
作者: Narsey S. ; Reeder M.J. ; Ackerley D. ; Jakob C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 14 起始页码: 5377
结束页码: 5393
语种: 英语
Scopus关键词: Climatology
; Dynamics
; Rain
; Vorticity
; Absolute vorticity flux
; Circulation changes
; Cyclonic circulation
; Fronts
; Madden-Julian oscillation
; Moisture flux convergences
; Monsoons
; Rossby wave
; Atmospheric thermodynamics
英文摘要: The initiation of northern Australian monsoon rainfall bursts is accompanied by an increase in cyclonic circulation in the monsoon region. This study shows that the change in circulation at the start of the composite rainfall burst is predominantly influenced by midlatitude frontlike features. By exploiting the relationship between circulation tendency and the convergence of absolute vorticity flux, the circulation changes accompanying the initiation of Australian monsoon bursts is investigated. Moisture flux convergence is found to be proportional to the circulation changes in the monsoon region. Using a composite analysis it is shown that absolute vorticity fluxes through the southern boundary are by far the most important influence on monsoon burst circulation changes, with only one-third of events more closely related to other influences including the Madden-Julian oscillation. This is shown to be true throughout the wet season. © 2017 American Meteorological Society. 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/48867
Appears in Collections: 气候变化与战略
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作者单位: School of Earth, Atmosphere and Environment, Monash University, Clayton, VIC, Australia; Australian Research Council Centre of Excellence for Climate Systems Science, Monash University, Clayton, VIC, Australia
Recommended Citation:
Narsey S.,Reeder M.J.,Ackerley D.,et al. A midlatitude influence on Australian monsoon bursts[J]. Journal of Climate,2017-01-01,30(14)