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A theory for the spinup of tropical depressions

  1. D. J. Raymond*,
  2. S. L. Sessions,
  3. Ž. Fuchs

Article first published online: 5 SEP 2007

DOI: 10.1002/qj.125

Issue

Quarterly Journal of the Royal Meteorological Society

Quarterly Journal of the Royal Meteorological Society

Volume 133, Issue 628, pages 1743–1754, October 2007 Part A

Additional Information

How to Cite

Raymond, D. J., Sessions, S. L. and Fuchs, Ž. (2007), A theory for the spinup of tropical depressions. Quarterly Journal of the Royal Meteorological Society, 133: 1743–1754. doi: 10.1002/qj.125

Author Information

  1. New Mexico Tech, Socorro, USA

*Physics Department and Geophysical Research Center, New Mexico Tech, Socorro, NM 87801 USA.

Publication History

  1. Issue published online: 25 OCT 2007
  2. Article first published online: 5 SEP 2007
  3. Manuscript Accepted: 25 APR 2007
  4. Manuscript Revised: 21 FEB 2007
  5. Manuscript Received: 3 AUG 2006

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Keywords:

  • tropical cyclogenesis;
  • tropical depressions

Abstract

Recent advances in our understanding of the physics of precipitation over tropical oceans is married with vorticity dynamics to produce a simple theory for the development or non-development of tropical depressions. This early phase of tropical cyclogenesis is perhaps the least understood part of the whole process. The theory predicts a finite amplitude threshold for intensification, with weaker disturbances decaying. Furthermore, only disturbances with radii larger than a critical value develop. Rough estimates of this critical radius place it near 1600 km, though better estimates of various parameters could change this value significantly. Copyright © 2007 Royal Meteorological Society

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