Date of Award

1-1-2012

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, 225 pages) : color illustrations, color maps.

Dissertation/Thesis Chair

Christophere D Thorncroft

Committee Members

Paul E Roundy, John Monilari, Lance F Bosart, George N Kiladis

Keywords

convection, equatorial waves, Genesis, Kelvin Waves, Madden Julian Oscillation, Tropical cyclones, Cyclones, Wave mechanics, Convection (Oceanography), Convection (Meteorology), Atmospheric circulation

Subject Categories

Atmospheric Sciences | Meteorology

Abstract

High-amplitude convectively coupled atmospheric Kelvin waves (CCKWs) are explored over the tropical Atlantic during the boreal summer. Atlantic tropical cyclogenesis is found to be more frequent during the passage of the convectively active phase of the CCKW, and most frequent two days after its passage. CCKWs impact convection within the mean latitude of the inter-tropical convergence zone over the northern tropical Atlantic. In addition to convection, CCKWs also impact the large scale environment that favors Atlantic tropical cyclogenesis (i.e., deep vertical wind shear, moisture, and low-level relative vorticity).

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