27th Conference on Hurricanes and Tropical Meteorology


Warm seclusion cyclone climatology

Ryan N. Maue, Florida State University, Tallahassee, FL; and R. E. Hart

Warm seclusion cyclones represent the intense, mature stage of the Shapiro-Keyser (1990) lifecycle paradigm. Characteristics include eye-like features near the center, bomb-like pressure falls, hurricane force winds along the bent-back warm front periphery, and vigorous convective precipitation. Cyclone phase space diagnostics portray a thermally warm core and symmetric frontal structure. A detailed climatology of global warm seclusions is presented here based upon ERA-40 reanalysis fields for both the Northern and Southern Hemispheres. Points addressed include development regions, nature of the incipient vortex (extratropical vs. tropical), deepening rates, and characteristics of synoptic large-scale environment.

Poster Session 6, Extratropical Transition of Tropical Cyclones
Tuesday, 25 April 2006, 1:30 PM-5:00 PM, Monterey Grand Ballroom

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