Abstract:

Sea wave was forecasted by the WAVEWATCH III model in the Yellow Sea and the Bohai Sea of Dalian. The products from the sea wave numerical forecast system include sea wave height, sea wave period and sea wave direction every three hours within 48 hours, and all were tested. The results indicate that the sea wave height could be simulated well by the WAVEWATCH III model in the middle of the Bohai Sea and TS (Threat Score) of sea wave height reaches 71.7%, while that is not well near the coast. The analysis of some cases shows that the maximum sea wave height and the trend of sea wave height could be simulated well. The occurrence time of the maximum sea wave height from the model agrees with that of the observation. Moreover, the simulated two sea wave period cases are tested, and the lowest error is 0.17s. The forecast effect of sea wave period by the WAVEWATCH III model is good.

Key words: Sea wave forecast, Sea wave height, Period