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Insights on hurricane intensity.

Persing, John Joseph.

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Insights on hurricane intensity.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Insights on hurricane intensity./
作者:	Persing, John Joseph.
面頁冊數:	117 p.
附註:	Source: Dissertation Abstracts International, Volume: 63-09, Section: B, page: 4220.
Contained By:	Dissertation Abstracts International63-09B.
標題:	Physics, Atmospheric Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3064014
ISBN:	0493829350

Insights on hurricane intensity.
Persing, John Joseph.

Insights on hurricane intensity. - 117 p.

Source: Dissertation Abstracts International, Volume: 63-09, Section: B, page: 4220.

Thesis (Ph.D.)--Colorado State University, 2002.

The motivation of this thesis is to obtain greater understanding of the controls on hurricane intensity. The results from three different hurricane models are presented: (1) a Geophysical Fluid Dynamics Laboratory Hurricane Prediction System simulation of Hurricane Opal (1995) using a reality-based, three-dimensional representation of the atmosphere; (2) the Emanuel (1995a) highly-simplified, axisymmetric hurricane model; and (3) the Rotunno and Emanuel (1987) axisymmetric, cloud-resolving, nonhydrostatic, grid model.

ISBN: 0493829350Subjects--Topical Terms:

1019431
Physics, Atmospheric Science.

Insights on hurricane intensity.
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245 1 0 $a Insights on hurricane intensity.
300 $a 117 p.
500 $a Source: Dissertation Abstracts International, Volume: 63-09, Section: B, page: 4220.
500 $a Adviser: Michael T. Montgomery.
502 $a Thesis (Ph.D.)--Colorado State University, 2002.
520 $a The motivation of this thesis is to obtain greater understanding of the controls on hurricane intensity. The results from three different hurricane models are presented: (1) a Geophysical Fluid Dynamics Laboratory Hurricane Prediction System simulation of Hurricane Opal (1995) using a reality-based, three-dimensional representation of the atmosphere; (2) the Emanuel (1995a) highly-simplified, axisymmetric hurricane model; and (3) the Rotunno and Emanuel (1987) axisymmetric, cloud-resolving, nonhydrostatic, grid model.
520 $a From the Opal simulation, we conclude that the popularly identified features of the environment of the storm (ocean eddies, trough-interaction, jet entrance regions) are not able to explain the modulations of intensification found in the simulation; although vertical shear is a strong candidate for the eventual weakening of the storm. This points to a thermodynamic interpretation of intensification. The Emanuel (1995a) model was designed to test a hypothesis for largely thermodynamic development of a hurricane. While confirming steady state intensity predictions of the Emanuel (1995b) maximum potential intensity theory (E-MPI) to within 5 meters per second, sensitivities of the model to purely numerical parameters argue against use the of this model as an operational forecast model.
520 $a With the Rotunno and Emanuel (1987) model, E-MPI can be greatly exceeded. Since this model should be faithful to many of the approximations of E-MPI theory, the remaining assumptions of E-MPI theory can be considered in turn. The model produces a significant flux of heat from the eye to the eyewall, allowing the modeled eyewall to ascend against a slight static stability, and this behavior is the key violation of E-MPI theory. The stabilization is a measure of the transfer of heat to the eyewall, and by accounting for this second source of heat, an ad hoc modification of E-MPI can explain most of the “superintensity” of the modeled storm.
520 $a We provide evidence that this active interaction between the eye and eyewall may operate in real hurricanes from published observations and in more-realistic, three-dimensional simulations of hurricanes. We propose that a new MPI should be developed to include this influence on hurricane intensity.
590 $a School code: 0053.
650 4 $a Physics, Atmospheric Science. $3 1019431
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710 2 0 $a Colorado State University. $3 675646
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790 1 0 $a Montgomery, Michael T., $e advisor
790 $a 0053
791 $a Ph.D.
792 $a 2002
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3064014