On the Role of Distributed Helicity in the Formation of Hurricanes

E. Golbraikh, P. Frick, R. Stepanov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The problem of formation (suppression) of hurricanes is one of the most important problems in the physics of the atmosphere and ocean. Till now, no clear picture of the hurricanes formation. Many years ago, in the paper [1] has been proposed a model amplification spiral vortex (such as typhoons), based on the hydrodynamic alpha-effect (HAE). However, in contrast to magnetic alpha-effect, the role turbulent helicity in the behavior of the hydrodynamic systems of hitherto considered passive [2], and consequently, this theory has not has been developed. On the other hand, some experimental data and theoretical estimates indicate that the helicity can influence the process of the formation of large-scale vortices. In the present work, based on the theory of the distributed helicity [3], we show that under certain conditions, helicity ceases to be a passive scalar and strongly influences the transfer of energy from the large scale to small, leading to its accumulation on the large scales, with subsequent transfer into a mean flow. At the same time, we suggest that the influence on a hurricane can be carried out only at the stage of its formation, and we discuss of the behavior some of the parameters that are the predictors of the hurricanes occurrence.
Original languageEnglish
Title of host publicationAmerican Geophysical Union, Ocean Sciences Meeting
PagesHI14A-1760
StatePublished - 1 Feb 2016

Keywords

  • 1610 Atmosphere
  • GLOBAL CHANGEDE: 1635 Oceans
  • GLOBAL CHANGEDE: 4504 Air/sea interactions
  • OCEANOGRAPHY: PHYSICALDE: 4572 Upper ocean and mixed layer processes
  • OCEANOGRAPHY: PHYSICAL

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