27th Conference on Hurricanes and Tropical Meteorology


A new pathway to polygonal eyewalls and asymmetric eyewall contraction

Pedro J. Mulero, Univ. of Wisconsin, Madison, WI; and J. P. Kossin

It has been previously demonstrated that barotropic instability across the hurricane eyewall results in polygonal features along the eye/eyewall interface and an asymmetric contraction of the eyewall. Using a 2D barotropic numerical model, we will demonstrate a new pathway to these phenomena in the absence of barotropic instability. Relevance to observations in hurricanes will be discussed.

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Session 6B, Tropical Cyclone Structure III - Eyewall Dynamics
Tuesday, 25 April 2006, 10:30 AM-12:30 PM, Regency Grand Ballroom

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