A proposed potential vorticity mechanism for sub-tropical cyclogenesis and tropical transition

Jenni L. Evans, Mark P. Guishard

Research output: Contribution to conferencePaper

2 Scopus citations

Abstract

A potential vorticity mechanism for sub-tropical cyclogenesis (STCG) and tropical transition was discussed. The first stage of STCG is identified with the intensification of pre-existing lower and upper PV anomalies by baroclinic instability. In the second stage, the amplified upper trough PV anomaly becomes cut off from the mean flow, via Rossby wave-breaking. In the third stage these cut-off features become embedded in a region of much greatly reduced of negligible vertical shear.

Original languageEnglish (US)
Pages411-412
Number of pages2
StatePublished - Jul 14 2004
Event26th Conference on Hurricanes and Tropical Meteorolgy - Miami, FL., United States
Duration: May 3 2004May 7 2004

Other

Other26th Conference on Hurricanes and Tropical Meteorolgy
CountryUnited States
CityMiami, FL.
Period5/3/045/7/04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Evans, J. L., & Guishard, M. P. (2004). A proposed potential vorticity mechanism for sub-tropical cyclogenesis and tropical transition. 411-412. Paper presented at 26th Conference on Hurricanes and Tropical Meteorolgy, Miami, FL., United States.