Abstract
Wind wave and swell prediction are carried out by using third generation wave models and wind fields. Although predicted wave heights by SWAN show good agreement with observations, predicted wave periods are underestimated significantly due to underestimations of wave spectra in the low frequency range. WW3 predicts wave heights, periods and spectra correctly. The relation between wave heights, wave periods and wind speeds obtained by WW3 also show good agreement with observations. The mechanism of decreasing wave periods with increase of wind wave is well explained by the wave spectra and the combined wind wave and swell model. Several wind fields used as sea surface boundary conditions for wave simulations are also validated. It is found that predicted extreme wave height and period by using the wind field obtained from the mesoscale model underestimate tropical cyclone induced extreme wave height and period and these underestimations are improved by using the wind fields obtained from the typhoon model and the combined wind field.
