التفاصيل البيبلوغرافية
| العنوان: |
When will cyclogenesis commence given a favorable tropical environment? |
| المؤلفون: |
Levina, Galina V., Montgomery, Michael T. |
| المساهمون: |
Meteorology |
| بيانات النشر: |
Elsevier |
| سنة النشر: |
2015 |
| المجموعة: |
Naval Postgraduate School: Calhoun |
| مصطلحات موضوعية: |
Tropical cyclogenesis, moist-convective atmospheric turbulence, helical self-organization, vortex dynamo, numerical diagnosis |
| الوصف: |
The article of record as published may be located at http://dx.doi.org/10.1016/j.piutam.2015.06.010 ; A numerical diagnosis of tropical cyclogenesis in a quiescent, rotating environment is presented to suggest an answer to the above question. Our research approach employs near-cloud-resolving numerical simulations to quantitatively analyze helical selforganization of moist-convective atmospheric turbulence. The simulations permit a diagnosis of cyclogenesis when the primary and secondary circulations in a forming hurricane vortex become linked by special convective coherent structures – Vortical Hot Towers (VHTs). The VHTs are argued to be intrinsic elements of the turbulent vortex dynamo in the tropical atmosphere of the Earth. It is discussed how the generated linkage makes the nascent vortex an integral helical system, supporting a positive feedback between the circulations. The feedback is sustained by only modest fluxes of latent heat from the underlying ocean, convective instability and vortical convection. The feedback indicates a release of potential energy that is converted into kinetic energy of developing large-scale helical vortex. Energy exchange between the primary and secondary circulation and their further mutual intensification is inferred from the numerical experiments. ; This work was supported by the Russian Academy of Sciences (OEMMPU Program 12-T-1-1008), and the U.S. National Science Foundation under grant ATM-0733380. |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
unknown |
| Relation: |
https://hdl.handle.net/10945/46691 |
| الاتاحة: |
https://hdl.handle.net/10945/46691 |
| Rights: |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
| رقم الانضمام: |
edsbas.9B39482D |
| قاعدة البيانات: |
BASE |