2012Unpublished venueRequires access

The effects of gap wind induced vorticity, monsoon trough and ITCZ on tropical cyclogenesis

Heather M. Holbach, Mark A. Bourassa

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Abstract

Vorticity produced by the gap winds through the Central American Mountains over the Gulfs of Papagayo and Tehuantepec is observed to contribute to tropical cyclogenesis in the Eastern Pacific Basin. Interactions between the gap wind induced vorticity, ITCZ, and monsoon trough is also investigated. It is found that the majority of the Tropical Cyclones investigated in this study occur while the monsoon trough is present. Contributions from the gap winds are also observed to occur more frequently while the monsoon trough is present.

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What this paper is about

Vorticity produced by the gap winds through the Central American Mountains over the Gulfs of Papagayo and Tehuantepec is observed to contribute to tropical cyclogenesis in the Eastern Pacific Basin. Interactions between the gap wind induced vorticity, ITCZ, and monsoon trough is also investigated. It is found that the majority of the Tropical Cyclones investigated in this study occur while the monsoon trough is present. Contributions from the gap winds are also observed to occur more frequently while the monsoon trough is present.

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Available abstract

Vorticity produced by the gap winds through the Central American Mountains over the Gulfs of Papagayo and Tehuantepec is observed to contribute to tropical cyclogenesis in the Eastern Pacific Basin. Interactions between the gap wind induced vorticity, ITCZ, and monsoon trough is also investigated. It is found that the majority of the Tropical Cyclones investigated in this study occur while the monsoon trough is present. Contributions from the gap winds are also observed to occur more frequently while the monsoon trough is present.

Key concepts: Tropical cyclogenesis, Monsoon trough, Trough (economics), Cyclogenesis, Climatology, Tropical cyclone, Intertropical Convergence Zone, African easterly jet

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