In order to assess the performance of Wavewatch Ⅲ(WWⅢ)model on maximum wave height simula-tion and its difference from the traditional statistical relationship methods,the accuracy of WWⅢ simulation and its deviation from the statistical relationship methods are analyzed through the hindcast simulation of two typhoon wave processes and the semi-annual operational forecasts.It is found that:The accuracy of maximum wave height of WWⅢ simulation is slightly lower than that of significant wave height,but still reaches the conditions of the relative error of 24-hour forecast(under the condition of maximum wave height not less than 1 meter)is lower than 18％,and the correlation coefficient is higher than 0.94.The accuracy of WWⅢ simulation is reliable and can be used in operational forecasts.Compared with the maximum wave height calculated by two statistical relationship methods(the ratios of Hmax and Hs are 1.42 and 1.52),the accuracy of WWⅢ simulation is generally equivalent to them.However,when the ratio of Hmax and Hs is greater than 1.65,which indicates dangerous sea conditions,the WWⅢ simulation has better accuracy and is more suitable for the early warning of sea waves.
关键词
最大波高/Wavewatch/Ⅲ模型/数值模拟/统计关系/预报精度
Key words
maximum wave height/WAVEWATCH Ⅲ model/numerical simulation/statistical relationship/forecasts
万方数据