Axisymmetric hurricane in a dry atmosphere: Theoretical framework and numerical experiments

Agnieszka A. Mrowiec, Stephen T. Garner, Olivier M. Pauluis

Research output: Contribution to journalArticle

Abstract

This paper discusses the possible existence of hurricanes in an atmosphere without water vapor and analyzes the dynamic and thermodynamic structures of simulated hurricane-like storms in moist and dry environments. It is first shown that the "potential intensity" theory for axisymmetric hurricanes is directly applicable to the maintenance of a balanced vortex sustained by a combination of surface energy and momentum flux, even in the absence of water vapor. This theoretical insight is confirmed by simulations with a high-resolution numerical model. The same model is then used to compare dry and moist hurricanes. While it is found that both types of storms exhibit many similarities and fit well within the theoretical framework, there are several differences, most notably in the storm inflow and in the relationship between hurricane size and intensity. Such differences indicate that while water vapor is not necessary for the maintenance of hurricane-like vortices, moist processes directly affect the structure of these storms.

Original languageEnglish (US)
Pages (from-to)1607-1619
Number of pages13
JournalJournal of the Atmospheric Sciences
Volume68
Issue number8
DOIs
StatePublished - Aug 2011

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hurricane
atmosphere
water vapor
experiment
vortex
surface energy
momentum
inflow
thermodynamics
simulation

Keywords

  • Hurricanes
  • Nonhydrostatic models
  • Tropical cyclones
  • Water vapor

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Axisymmetric hurricane in a dry atmosphere : Theoretical framework and numerical experiments. / Mrowiec, Agnieszka A.; Garner, Stephen T.; Pauluis, Olivier M.

In: Journal of the Atmospheric Sciences, Vol. 68, No. 8, 08.2011, p. 1607-1619.

Research output: Contribution to journalArticle

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