Tropical Cyclone Genesis: A Dynamician’s Point of View

  • Safieddine Bouali
  • Jos Leys
Conference paper


The paper focuses the route to the maturity of a cyclone as a twist process of the Hadley cell. The approach is qualified by a “dynamician’s viewpoint” since the aerologic mechanism of the cyclone genesis is replicated without the classical tools of the meteorological fluid framework. Indeed, we introduce a pure dynamical model of a 2D vertical rotor of an airparcel to emulate the Hadley cell. Twisted by an appropriate feedback to inject geophysical forcing, the simulation displays two stretched solenoid rolls with clockwise and anticlockwise paths representing the Hadley belts wrapping the Earth. When the forcing parameter is higher, computations simulate overlapped whirlwind funnels revealing strong similarities with the structure of cyclones, hurricanes, and typhoons described in the atmospheric science literature. We conjecture that ocean-atmosphere interactions separate and convert a “slice” of the Hadley rotor into a fully tropical cyclone.


Tropical Cyclone Hadley Cell Global Circulation Model Vertical Rotor Dynamical Twist 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. 1.
    Bouali, S.: Twisting Rolls. An Heuristic Model and 3D Numerical Simulations of Vortex Patterns. (2003). January 3, 2013
  2. 2.
    Emanuel, K.A.: Atmospheric Convection. Oxford University Press, London (1994)Google Scholar
  3. 3.
    Hadley, G.: Concerning the cause of the general trade winds. Phil. Trans. 29, 58–62 (1735)Google Scholar
  4. 4.
    Houghton, J.T.: The Physics of the Atmosphere. Cambridge University Press, Cambridge (1977)zbMATHGoogle Scholar
  5. 5.
    Montgomery, M.T., Farrel, B.F.: Tropical Cyclone Formation. J. Atmos. Sci. 50, 285–310 (1993)CrossRefGoogle Scholar
  6. 6.
    National Oceanic and Atmospheric Administration (NOAA). National Weather Service. Tropical Cyclone Structure. Online Document, USA. January 3, 2013
  7. 7.
    Oort, A.H., Yienger, J.J.: Observed interannual variability in the Hadley circulation and its connection to ENSO. J. Clim. 9, 2751–2767 (1996)CrossRefADSGoogle Scholar
  8. 8.
    Pedlosky, J.: Geophysical Fluid Dynamics. Springer, New York (1987)CrossRefzbMATHGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Management InstituteUniversity of TunisLe BardoTunisia
  2. 2.Mathematical ImageryAntwerpBelgium

Personalised recommendations