DOI: 10.1002/2014MS000316
Scopus记录号: 2-s2.0-84925420978
论文题名: Some aspects of the problem of secondary eyewall formation in idealized three-dimensional nonlinear simulations
作者: Menelaou K ; , Yau M ; K ; , Martinez Y
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 6, 期: 3 起始页码: 491
结束页码: 512
语种: 英语
英文关键词: Heating
; Boundary layer dynamics
; Control experiments
; Environmental flow
; Eyewall
; Frictional boundaries
; Nonlinear simulations
; Potential vorticity
; Vertical wind shear
; Boundary layers
; assessment method
; boundary layer
; experimental study
; heating
; latent heat flux
; nonlinearity
; rainband
; surface layer
; three-dimensional modeling
; vortex
; vorticity
; wind shear
英文摘要: Some aspects of the problem of secondary eyewall formation (SEF) are investigated with the aid of an idealized model. A series of experiments are conducted, starting with a strong annular vortex embedded in a quiescent background flow and forced by the sustained heating associated with a spiral rainband (control experiment). Following this, two experiments are configured to assess the impact of vertical wind shear (VWS) in the SEF process. The importance of the boundary layer force imbalance is finally investigated in a number of simulations in which surface and boundary layer physics are included. From the control experiment, it is found that in the absence of background environmental flow, the sustained latent heating associated with a spiral rainband can form a secondary eyewall even in the absence of a frictional boundary layer. The presence of VWS acts negatively in the SEF process by disrupting the organization of the potential vorticity induced by the rainband. When boundary layer physics is included, some similarities with previous studies are seen, but there is no SEF. These results suggest that the boundary layer most likely contributes to, rather than initiate, a secondary eyewall. Key Points Sustained rainband heating alone can initiate a secondary eyewall Vertical wind shear may disrupt the process of secondary eyewall formation Boundary layer dynamics contribute rather than initiate a secondary eyewall © 2014. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/76019
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, Canada; Meteorological Research Division, Environment Canada, Dorval, Quebec, Canada
Recommended Citation:
Menelaou K,, Yau M,K,et al. Some aspects of the problem of secondary eyewall formation in idealized three-dimensional nonlinear simulations[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,6(3)