A Two-Way Nesting Procedure for the WAM Model: Application to the Spanish Coast

Author:

Gomez Lahoz M.1,Carretero Albiach J. C.1

Affiliation:

1. Clima Mari´timo—CEPVC, Puertos del Estado, Antonio Lopez 81, Madrid, Spain 28026

Abstract

Abstract The performance of the standard one-way nesting procedure for a regional application of a third-generation wave model is investigated. It is found that this nesting procedure is not applicable when the resolution has to be enhanced drastically, unless intermediate grids are placed between the coarse and the fine grid areas. This solution, in turn, requires an excess of computing resources. A two-way nesting procedure is developed and implemented in the model. Advantages and disadvantages of both systems are discussed. The model output for a test case is compared with observed data and the results are discussed in the paper.

Publisher

ASME International

Subject

Mechanical Engineering,Ocean Engineering

Reference9 articles.

1. Carretero, J. C., and Gu¨nther H., 1992, “Wave Forecast Performed With the WAM Model at the ECMWF. Statistical Analysis of a One Month Period (November 1988),” Direccion General de Puertos, Programa de Clima Mari´timo MOPT. No. 49, Spain.

2. Gomez, M., and Carretero, J. C., 1994, “Implementation of a High Resolution Third Generation Model on the Atlantic Coast of Spain,” PIANC Bulletin No. 83/84, Belgium.

3. Gu¨nther, H., Hasselman, S., and Janssen, P. A. E. M., 1991, “WAM Model Cycle 4,” Technical Report No. 4, Deutsches KlimaRechenZentrum, Germany.

4. Gu¨nther, H., Lionello, P., Janssen, P. A. E. M., Bertotti, L., Bruning, C., Carretero, J. C., Cavaleri, L., Guillaume, A., Hansen, B., Hasselman, S., Hasselman, K., M. de las Heras, Hollingsworth, A., Holt, M., Lefevre, J. M., and Portz, R., 1992, “Implementation of a Third Generation Ocean Wave Model at the European Centre for Medium-Range Weather Forecasts,” ECMWF Technical Report No. 68, UK.

5. Komen, G. J., Cavaleri, L., Donelan, M., Hasselmann, K., and Janssen, P. A. E. M., 1994, Dynamics and Modelling of Ocean Waves, Cambridge University Press, UK.

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