Sensitivity of modeled tropical cyclone track and structure of hurricane Irene (1999) to the convective parameterization scheme

B. E. Prater, J. L. Evans

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The Betts-Miller and the Kain-Fritsch schemes are two of the many approaches to convective parameterization available to modelers. In the case of hurricane Irene (1999), the choice of parameterization markedly impacted the modeled track and structure of the hurricane and its subsequent extratropical transition. Specifically, in model runs using Betts-Miller, Irene recurved too early, causing the storm to weaken over the cool open ocean, delaying its transition, and changing the character of the storm. The Kain-Fritsch scheme more accurately reproduced the track of Irene and, hence, its interaction with upper-level features that caused extratropical transition and post-transition intensification. The two parameterizations produce different characteristic vertical warming profiles; the differences in warming are related to the structural differences in the simulated storm, affecting the hurricane response to its environment.

Original languageEnglish (US)
Pages (from-to)103-115
Number of pages13
JournalMeteorology and Atmospheric Physics
Volume80
Issue number1-4
DOIs
StatePublished - Jun 1 2002

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tropical cyclone
hurricane
parameterization
warming
open ocean

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

Cite this

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title = "Sensitivity of modeled tropical cyclone track and structure of hurricane Irene (1999) to the convective parameterization scheme",
abstract = "The Betts-Miller and the Kain-Fritsch schemes are two of the many approaches to convective parameterization available to modelers. In the case of hurricane Irene (1999), the choice of parameterization markedly impacted the modeled track and structure of the hurricane and its subsequent extratropical transition. Specifically, in model runs using Betts-Miller, Irene recurved too early, causing the storm to weaken over the cool open ocean, delaying its transition, and changing the character of the storm. The Kain-Fritsch scheme more accurately reproduced the track of Irene and, hence, its interaction with upper-level features that caused extratropical transition and post-transition intensification. The two parameterizations produce different characteristic vertical warming profiles; the differences in warming are related to the structural differences in the simulated storm, affecting the hurricane response to its environment.",
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AB - The Betts-Miller and the Kain-Fritsch schemes are two of the many approaches to convective parameterization available to modelers. In the case of hurricane Irene (1999), the choice of parameterization markedly impacted the modeled track and structure of the hurricane and its subsequent extratropical transition. Specifically, in model runs using Betts-Miller, Irene recurved too early, causing the storm to weaken over the cool open ocean, delaying its transition, and changing the character of the storm. The Kain-Fritsch scheme more accurately reproduced the track of Irene and, hence, its interaction with upper-level features that caused extratropical transition and post-transition intensification. The two parameterizations produce different characteristic vertical warming profiles; the differences in warming are related to the structural differences in the simulated storm, affecting the hurricane response to its environment.

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