Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.07.018 |
Tropicalization process of the 7 November 2014 Mediterranean cyclone: Numerical sensitivity study | |
Carrio, D. S.1; Homar, V.1; Jansa, A.1; Romero, R.1; Picornell, M. A.2 | |
2017-11-15 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 197 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain |
英文摘要 | Tropical-like Mediterranean cyclones (medicanes) have been documented and investigated in the literature, revealing that their physical mechanisms are still poorly understood and likely not unique across cases. During late hours of 7 November 2014 a small-scale cyclone was detected over the Sicilian channel, affecting the Islands of Lampedusa, Pantelleria and Malta. Gust wind values exceeding 42.7 m s(-1) and a pressure drop above 20 hPa in 6 h were registered in Malta. Clear signatures of a well-defined cloud-free eye surrounded with convective activity of axisymmetric character were identifiable through IR satellite imagery during the late stages of the cyclone, resembling the properties of a hurricane. We investigate the cyclogenesis and posterior development of this small-scale cyclone as well as its physical nature; to this aim, a set of high-resolution sensitivity numerical experiments were performed. Hart's phase diagrams adapted to the Mediterranean region clearly reveal the tropical characteristics of the simulated storm. A numerical sensitivity analysis by means of a factor separation technique is used to gain quantitative insight on the roles latent heat release, surface heat fluxes and upper-level PV signatures (dynamically isolated through a PV-Inversion technique) have on the unfold of this singular event. Results show the importance of the upper-level dynamics to generate a baroclinic environment prone to surface cyclogenesis and in supporting the posterior tropicalization of the system. On the contrary, latent heat release and surface heat fluxes factors do not seem to contribute, as individual processes, to the genesis of the cyclone as much as it could be suspected, considering it behaves as a tropical-like cyclone. However, the asynchronous synergism between latent heat release and PV factors plays a crucial role for the intensification of the cyclone towards reaching the pure diabatic phase. |
英文关键词 | Medicane Extra-tropical cyclone Cyclogenesis Factor separation Potential-vorticity inversion Hart' s diagram |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000412250700025 |
WOS关键词 | EXPLICIT FORECASTS ; SURFACE CYCLONES ; JANUARY 1995 ; PART I ; CLIMATOLOGY ; MICROPHYSICS ; SIMULATIONS ; MEDICANES ; HURRICANE ; MODEL |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38377 |
专题 | 地球科学 |
作者单位 | 1.Univ Illes Balears, Meteorol Grp, Dept Phys, Palma De Mallorca, Spain; 2.Agencia Estatal Meteorol, Palma De Mallorca, Spain |
推荐引用方式 GB/T 7714 | Carrio, D. S.,Homar, V.,Jansa, A.,et al. Tropicalization process of the 7 November 2014 Mediterranean cyclone: Numerical sensitivity study[J]. ATMOSPHERIC RESEARCH,2017,197. |
APA | Carrio, D. S.,Homar, V.,Jansa, A.,Romero, R.,&Picornell, M. A..(2017).Tropicalization process of the 7 November 2014 Mediterranean cyclone: Numerical sensitivity study.ATMOSPHERIC RESEARCH,197. |
MLA | Carrio, D. S.,et al."Tropicalization process of the 7 November 2014 Mediterranean cyclone: Numerical sensitivity study".ATMOSPHERIC RESEARCH 197(2017). |
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