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Title

Spectral wave modelling of Typhoon Krosa

Author(s)

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

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.

Publication type

Journal article

Research centre

Swinburne University of Technology

Source

Natural Hazards and Earth System Sciences, Vol. 11, no. 2 (2011), pp. 501-511

Publication year

2011

FOR Code(s)

040503 Physical Oceanography;  091103 Ocean Engineering

Keyword(s)

Spectral modelling;  Typhoon Krosa;  Typhoons

Publisher

Copernicus Publications

ISSN

1561-8633

Publisher URL

http://dx.doi.org/10.5194/nhess-11-501-2011

Copyright

Copyright © 2011 The authors. This work is licensed under a Creative Commons Attribution 3.0 License (http://creativecommons.org/licenses/by/3.0/), which means that anyone (the author, his/her institution/company, the publisher, as well as the public) is free to copy, distribute, transmit, and adapt the work as long as the original author is given credit (see above).

Research Projects

Oceanic conditions within extreme tropical cyclones, Australian Research Council grant number LP0883888

Full text

Peer reviewed