两种海浪模式模拟结果的对比研究

Study and comparison of the simulation results using two wave models

利用合成风场驱动SWAN和WAVEWATCHⅢ这两种海浪模式,分别模拟了墨西哥湾海域和印度洋海域的海浪,并将两种海浪模式的模拟结果与波浪实测资料及Jason-1卫星高度计观测资料进行对比研究。研究结果表明:以CCMP风场为背景风场,合成Myers台风模型风场所得的合成风场能较好地模拟台风风场,但对于部分台风风场,模拟结果明显偏小。WW3对台风浪的模拟效果偏弱,SWAN模拟效果更好,与实测值更接近;对于大范围海域的海浪模拟,SWAN对涌浪传播的模拟耗散较大,模拟的波高和周期均偏小,而WW3模拟效果更好。

Simulations of wind-wave activity in Gulf of Mexico and Indian Ocean forced by combined wind field were performed using the SWAN and WAVEWATCH III model. The results of the simulations were compared with the measured wave data and Jason-1 satellite altimeter data. The results show that the combined wind field can simulate the wind field during typhoon periods well, but sometimes the simulated wind speed is much smaller than the measured wind speed. The wave height simulated by WW3 is usually smaller than wave height simulated by SWAN, and the latter is more coincident with the measured data. However, in the large scale area, because of the influence of swell, the results simulated by WW3 are better than the results simulated by SWAN.