Spectral wave modelling of Typhoon Krosa

A. V. Babanin; T. W. Hsu; A. Roland; S. H. Ou; D. J. Doong; C. C. Kao

doi:10.5194/nhess-11-501-2011

Spectral wave modelling of Typhoon Krosa

A. V. Babanin, T. W. Hsu, A. Roland, S. H. Ou, D. J. Doong, C. C. Kao

Department of Hydraulic and Ocean Engineering

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

This paper presents modelling the wave conditions in Typhoon Krosa prior to touching Taiwan in October 2007, with third-generation wave models of SWAN and WWM. The accuracy of the extreme wave measurement H_max=32 m with significant wave height H_s≈24 m at the depth of h=38 m is discussed first. It is concluded that the measurement does not appear faulty and is physically realistic. The numerical results are then analysed in order to examine the models' capability to reproduce the observed conditions. It is found that neither SWAN nor WWMII are able to hindcast the extreme measurement. Series of sensitivity tests are conducted for different numerical and diffraction schemes, and source functions. It is shown that, in the circumstances, the model performance only improves in response to the bottom-limited breaking formulation.

Original language	English
Pages (from-to)	501-511
Number of pages	11
Journal	Natural Hazards and Earth System Science
Volume	11
Issue number	2
DOIs	https://doi.org/10.5194/nhess-11-501-2011
Publication status	Published - 2011

All Science Journal Classification (ASJC) codes

General Earth and Planetary Sciences

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title = "Spectral wave modelling of Typhoon Krosa",

abstract = "This paper presents modelling the wave conditions in Typhoon Krosa prior to touching Taiwan in October 2007, with third-generation wave models of SWAN and WWM. The accuracy of the extreme wave measurement Hmax=32 m with significant wave height Hs≈24 m at the depth of h=38 m is discussed first. It is concluded that the measurement does not appear faulty and is physically realistic. The numerical results are then analysed in order to examine the models' capability to reproduce the observed conditions. It is found that neither SWAN nor WWMII are able to hindcast the extreme measurement. Series of sensitivity tests are conducted for different numerical and diffraction schemes, and source functions. It is shown that, in the circumstances, the model performance only improves in response to the bottom-limited breaking formulation.",

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AU - Babanin, A. V.

AU - Hsu, T. W.

AU - Roland, A.

AU - Ou, S. H.

AU - Doong, D. J.

AU - Kao, C. C.

PY - 2011

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AB - This paper presents modelling the wave conditions in Typhoon Krosa prior to touching Taiwan in October 2007, with third-generation wave models of SWAN and WWM. The accuracy of the extreme wave measurement Hmax=32 m with significant wave height Hs≈24 m at the depth of h=38 m is discussed first. It is concluded that the measurement does not appear faulty and is physically realistic. The numerical results are then analysed in order to examine the models' capability to reproduce the observed conditions. It is found that neither SWAN nor WWMII are able to hindcast the extreme measurement. Series of sensitivity tests are conducted for different numerical and diffraction schemes, and source functions. It is shown that, in the circumstances, the model performance only improves in response to the bottom-limited breaking formulation.

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Spectral wave modelling of Typhoon Krosa

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