Quantifying the contribution of nonlinear interactions to storm tide simulations during a super typhoon event
Quantifying the contribution of nonlinear interactions to storm tide simulations during a super typhoon event
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DOI：
10.1016/j.oceaneng.2019.106661
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发表时间：
2019-12
影响因子：
5
通讯作者：
S. Hsiao;Hongey Chen;Wei-Bo Chen;Chih-Hsin Chang;Lee-Yaw Lin
中科院分区：
文献类型：
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作者：
S. Hsiao;Hongey Chen;Wei-Bo Chen;Chih-Hsin Chang;Lee-Yaw Lin
2016年9月1日至30日，来自美国国家环境预测中心气候预报系统第2版（CFSV 2），欧洲中期天气预报中心ERA-Interim和ERA 5的风场数据与参数台风模型（ERA 5 H）混合，用于驱动完全耦合的环流-波模型。结果表明，ERA 5 H对台风最大风暴潮、有效波高和平均波周期的模拟效果最好。采用7种情景模拟方法，定量分析了非线性相互作用对2016年超级台风莫兰蒂（Meranti）引发的风暴潮的贡献。结果表明，波浪与风暴潮的非线性相互作用最大，在有无潮汐作用的情况下，两者的非线性相互作用可达0.97 m。波潮相互作用对总水位的影响相对较小，对风暴潮的贡献仅为± 0.1 m。在有和没有波浪效应的情况下，潮汐-涌浪相互作用存在显著差异，因为这些相互作用分别提供了约0.06-0.08 m和± 0.02 m的风暴潮。耦合模式和非耦合模式下台风最大波高的空间分布规律相似。本文认为，在台风风暴潮预报中，如果考虑波浪场的影响，可以避免风暴潮的误算。
Wind field data from the National Centers for Environmental Prediction Climate Forecast System Version 2 (CFSV2), the European Centre for Medium-Range Weather Forecasts ERA-Interim and ERA5 and the ERA5 blended into the parametric typhoon model (ERA5H) from September 1 to 30, 2016, were adopted to drive a fully coupled circulation-wave model. The best performance of the maximum storm tide and significant wave height (SWH) and mean wave period simulation for typhoon events was found by applying the ERA5H. The contributions of nonlinear interactions to the storm tide induced by Super Typhoon Meranti in 2016 were quantified using seven scenario simulations. The results indicated that the wave setup had the most significant nonlinear interaction with the storm tide, which was up to 0.97 m both with and without tidal effects. The wave-tide interaction was relatively minor for the total water level and contributed only ± 0.1 m to the storm tide. Significant differences in the tide-surge interactions were detected with and without wave effects, as these interactions provided approximately 0.06–0.08 m and ± 0.02 m of the storm tide, respectively. The spatial distributions of the maximum SWH for typhoon events were similar when coupled and decoupled models were employed. In this paper, it is concluded that storm surge miscalculation can be avoided if wave setups are included when predicting typhoon-generated storm tides.