| DOI: | 10.1002/2016GL071662
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| 论文题名: | Vortex Rossby wave propagation in baroclinic tropical cyclone-like vortices |
| 作者: | Gao C.; Zhu P.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8277
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| EISSN: | 1944-8008
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| 出版年: | 2016
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| 卷: | 43, 期:24 | | 起始页码: | 12578
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| 结束页码: | 12589
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| 语种: | 英语
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| 英文关键词: | baroclinicity
; tropical cyclone
; vortex Rossby wave
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| Scopus关键词: | Dispersion (waves)
; Dispersions
; Excited states
; Hurricanes
; Mechanical waves
; Meteorology
; Quantum theory
; Storms
; Tropics
; Wave packets
; Wave propagation
; Baroclinicity
; Dispersion relations
; Mathematical forms
; Propagation theory
; Radial propagation
; Structure of vortices
; Tropical cyclone
; Vortex rossby waves
; Vortex flow
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| 英文摘要: | This study extends the vortex Rossby wave (VRW) propagation theory into baroclinic tropical cyclone-like vortices. Dispersion relation, group velocities, and stagnation radius/height of propagating wave packets in baroclinic conditions are derived using the Wenzel-Kramers-Brillouin approximation. It is found that the VRW dispersion relation in baroclinic vortices in isentropic coordinates has the same mathematical form as that in barotropic vortices in pseudoheight coordinates. However, baroclinicity causes the vertical wave number to increase as wave packets propagate upward, resulting in different wave propagation features from those in barotropic vortices. The stagnation radius and level are constrained by a “critical” surface where the initial central angular phase velocity equals the angular velocity of the vortex. Depending on the specific structure of vortex basic-state baroclinicity and positions where asymmetries are located, the excited waves can either be trapped vertically and behave like those in barotropic conditions or effectively propagate upward but with their radial propagation largely suppressed. ©2016. The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007296937&doi=10.1002%2f2016GL071662&partnerID=40&md5=71b1c267a7c2ef7bfbacd0350789cdc1
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9240
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| 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: | Department of Earth and Environment, Florida International University, Miami, FL, United States
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| Recommended Citation: | |
Gao C.,Zhu P.. Vortex Rossby wave propagation in baroclinic tropical cyclone-like vortices[J]. Geophysical Research Letters,2016-01-01,43(24).
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