Uncertainty of Ocean Wave Hindcasts Due to Wind Modeling

Author:

Teixeira J. C.1,Abreu M. P.1,Guedes Soares C.1

Affiliation:

1. Unit for Marine Technology and Engineering, Technical University of Lisbon, Instituto Superior Tecnico, 1096 Lisboa, Portugal

Abstract

Two wind models were developed and their results were compared with data gathered during the Wangara experiment, so as to characterize their uncertainty. One of the models was adopted to generate the wind fields used as input to a second generation wave model. The relative error in the wind speed was considered in order to assess the uncertainties of the predictions or the significant wave height. Different time steps for the wind input were also used to determine their effect on the predicted significant wave height.

Publisher

ASME International

Subject

Mechanical Engineering,Ocean Engineering

Reference11 articles.

1. Arya, P., 1989, Introduction to Micrometeorology, Academic Press, New York, NY.

2. Charnock H. , 1955, “Wind Stress on a Water Surface,” Q.J.R. Meteor. Society, Vol. 81, pp. 639–640.

3. Clarke, R. H., Dyer, A. J., Brook, R. R., Reid, D. G., and Troup, A. J., 1971, Wangara Experiment-Boundary Layer Data, Division of Meteorological Physics technical paper No. 19, C.S.I.R.O., Melbourne, Australia

4. Guedes Soares C. , 1984, “Representation of Double-Peaked Sea Wave Spectra,” Ocean Engineering, Vol. 11, pp. 185–207.

5. Guedes Soares, C., and Viana, P. C., 1988, “Sensitivity of the Response of Structures to Wave Climatology,” Computer Modelling in Ocean Engineering, eds., B. A. Schrefler, O. C. Zienkewicz, and A. A. Balkema, Rotterdam, pp. 487–492.

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