Date of Award

1-1-2011

Language

English

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

College/School/Department

Department of Atmospheric and Environmental Sciences

Content Description

1 online resource (viii, 212 pages) : PDF file, illustrations (some color), color map

Dissertation/Thesis Chair

Lance F Bosart

Committee Members

Ryan Torn, Brian Colle, Wayne Higgins

Keywords

extratropical transition, high-impact weather, predictability, teleconnections, tropical cyclones, tropical-extratropical interactions, Typhoons, Cyclones, Weather forecasting, Synoptic meteorology, Rossby waves

Subject Categories

Atmospheric Sciences

Abstract

The factors that govern the downstream flow response to recurving western North Pacific (WNP) tropical cyclones (TCs) are investigated from climatological, composite analysis, case study, and predictability perspectives. A 1979–2009 climatology of WNP TC recurvature indicates that TC recurvature is followed by a four-day period of above-normal North Pacific meridional flow. The relationship between TC recurvature and above-normal North Pacific meridional flow is found to be stronger in late summer through mid-fall than in early summer and early winter, and stronger for TCs that interact strongly with the jet stream than for TCs that interact weakly with the jet stream. This relationship is not affected by the size or intensity of a TC at recurvature, or whether or not a TC reintensifies as an extratropical cyclone.

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