DOI: 10.1002/2013GL058257
论文题名: The influence of tropical cyclones on heat waves in Southeastern Australia
作者: Parker T.J. ; Berry G.J. ; Reeder M.J.
刊名: Geophysical Research Letters
ISSN: 0094-8301
EISSN: 1944-8032
出版年: 2013
卷: 40, 期: 23 起始页码: 6264
结束页码: 6270
语种: 英语
英文关键词: heat waves
; Rossby waves
; tropical cyclones
Scopus关键词: Deep convection
; Dynamical pattern
; Heat waves
; Keypoints
; Potential vorticity
; Rossby wave
; South-eastern Australia
; Tropical cyclone
; Advection
; Climatology
; Mechanical waves
; Vorticity
; Hurricanes
; advection
; anticyclone
; continental interior
; convection
; outflow
; overturn
; potential vorticity
; Rossby wave
; summer
; tropical cyclone
; wave breaking
; Australia
英文摘要: Heat waves in southeastern Australia in summer are commonly associated with slow-moving surface high-pressure systems, which result in warm northerly flow from the continental interior. The underlying dynamical pattern of heat waves in this region is associated with propagating Rossby waves, which grow in amplitude and eventually overturn, forming an upper level anticyclonic potential vorticity anomaly. The influence of tropical cyclones on the development of these anomalies is investigated here. Tropical cyclones may affect heat waves in this region indirectly, as the divergent outflow at upper levels perturbs the Rossby wave guide, leading to downstream development. However, the effect may also be direct, through the advection of anomalously anticyclonic potential vorticity from regions of deep convection in the vicinity of tropical cyclones into the upper level anticyclone. Our research shows that this direct reinforcement of the anticyclone is likely to be more important in the formation of severe heat waves in southeastern Australia. Key Points Heatwaves in Southeastern Australia are associated with Rossby wave breaking Advection from tropical cylone outflow plays a role in severe heatwaves ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84888801437&doi=10.1002%2f2013GL058257&partnerID=40&md5=ebccec90fd4fbad479e8bcf62f77fa02
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5565
Appears in Collections: 气候减缓与适应
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作者单位: Monash Weather and Climate, School of Mathematical Sciences, Monash University, Clayton, VIC 3800, Australia
Recommended Citation:
Parker T.J.,Berry G.J.,Reeder M.J.. The influence of tropical cyclones on heat waves in Southeastern Australia[J]. Geophysical Research Letters,2013-01-01,40(23).