Wind forcing effect on hindcasting of typhoon-driven extreme waves
Wind forcing effect on hindcasting of typhoon-driven extreme waves
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DOI：
10.1016/j.oceaneng.2019.106260
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发表时间：
2019-09
影响因子：
5
通讯作者：
Wei-Bo Chen;Hongey Chen;S. Hsiao;Chih-Hsin Chang;Lee-Yaw Lin
中科院分区：
文献类型：
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作者：
Wei-Bo Chen;Hongey Chen;S. Hsiao;Chih-Hsin Chang;Lee-Yaw Lin
台风产生的巨浪会对台湾沿海地区的人民生命财产构成严重威胁。我们假设，台风产生的有效波高(SWHS)的准确预测在很大程度上取决于准确的台风风场。利用不同风场和潮汐-潮汐-波浪完全耦合模式，对台湾东北沿海台风SWH模式的模拟效果进行了评估。将来自气候预报系统再分析(CFSR)、ERA-临时(ERA)和交叉校准多平台V2(CCMPV2)的风产品混合到参数台风模式(混合风模式)中，作为全耦合模式中的主要强迫。SWHS的模型数据比较结果表明，仅使用CFSR、ERA和CCMPV2的后向预测的优秀技能指数在0.92到0.94之间。混合风模式的使用表明，SWH后向预报得到了持续的改善，其中CCMPV2与参数台风模式的结合具有最好的整体性能。然而，只有将CFSR与台风参数模式相结合的模式施加到完全耦合的模式上，才能很好地匹配极大的台风诱发的短波(超过11 m)。
Large waves generated by typhoons can pose a serious threat to human life and property in the coastal areas of Taiwan. We hypothesize that an accurate hindcast of typhoon-generated significant wave heights (SWHs) is highly dependent on an accurate typhoon wind field. This paper evaluated the performance of SWH modeling for typhoons on the northeastern coast of Taiwan using different wind fields and a fully coupled tide-surge-wave model. Wind products from the Climate Forecast System Reanalysis (CFSR), ERA-Interim (ERA), and Cross-Calibrated Multi-Platform V2 (CCMPV2) were blended into the parametric typhoon models (hybrid wind models) to serve as the main forcing in the fully coupled model. The results of model-data comparison for SWHs reveal that the hindcasts only using the CFSR, ERA and CCMPV2 own the excellentskillindexes ranging from 0.92 to 0.94. The use of hybrid wind models indicated a consistent improvement in SWH hindcasting, and the CCMPV2 combined with the parametric typhoon model has the best overall performance. However, the extremely large typhoon-induced SWHs (exceeding 11 m) can only be well-matched when the CFSR merged with the parametric typhoon model was imposed on the fully coupled model.