台风Winnie(1997)影响下海浪的数值模拟研究

NUMERICAL SIMULATION OF TYPHOON WAVE UNDER THE INFLUENCE OF WINNIE(1997)

采用多重嵌套中尺度大气数值模式提供的风场,在考虑了波-流相互作用等主要物理过程的基础上,应用最新版本的第三代海浪模式SWAN对Winnie(1997)引起的台风浪进行了模拟,将模拟的有效波高与TOPEX/POSEIDON和ERS-2卫星高度计资料作了详细的对比分析,并分析了台风浪要素的分布特征。结果表明,SWAN在模拟较大尺度的海区时也能得到较好的模拟效果,能较好地再现海浪的发展过程和合理地反映台风浪的分布。

In this paper, the wind field provided by a meso-scale tropical cyclone numerical model is employed. When main physical processes, including wave-current interactions, are considered, the latest version of the third generation wave model SWAN is applied to simulate the typhoon wave generated by Typhoon Winnie （1997）. The model results are compared with the TOPEX/POSEIDON and ERS-2 satellite altimeter data and analyzed in details. Then the distribution of wave fields are analyzed, with the results showing that applying SWAN to simulate large-scale domain can also fairly reproduce the observed features of waves and preferably reflect the distribution of typhoon waves.