颱風每年在全球造成巨大的經濟損失、影響人民的生命安全，沿海防波堤和基樁等重要基礎設施的設計條件與颱風引發的波浪和暴潮高度相關，本研究對歷史颱風事件進行數值模擬，而可靠的示性波高推算依賴準確的颱風風場。
採用混合公式將ERA5 再分析風場和MRV 參數颱風風場疊加合併作為驅動波浪潮汐耦合模式的輸入條件，首先針對2016 年莫蘭蒂颱風和梅姬颱風台灣周圍海域的16 個浮標測站修正參數颱風風場開始時間讓示性波高提前上升導致高估的情況改善；比較日本氣象廳和台灣中央氣象局最佳路徑資料對於示性波高推算誤差，結果顯示台灣中央氣象局最佳路徑資料誤差略比日本氣象廳小，選擇近幾年時間解析度較高的台灣中央氣象局最佳路徑資料；最大風速的半徑Rmax 是參數颱風風場和混合公式的重要參數，選取6 個Rmax 公式比較示性波高推算值，結果為Willoughby 和 Rahn(2006) 的Rmax 公式最適合使用在台灣周圍海域，最後再進行模式驗證。
比較ERA5 再分析風場和更改最適合台灣周圍海域的最佳路徑資料與Rmax 公式後得到的混合風場2 種風場的示性波高推算分別適合台灣中央氣象局分類之1、2、3、4 以及6 號颱風侵台路徑，每種侵台路徑選擇2 個浮標測站最齊全的颱風事件，結果顯示5 種侵台路徑在台灣整體周圍海域都比較適合使用ERA5 再分析風場模擬的示性波高，不過對於部分測站實測值示性波高高於6 公尺時，混合風場仍然有達到修正ERA5 再分析風場的目的。

Typhoons caused huge losses and threats every year. This study simulated historical typhoon events by using the SCHISM-WWM-III coupled model, and evaluated the suitability of typhoon tracks passed Taiwan by using significant wave height (SWH) hindcasts from typhoon wind field. The reliable SWH hindcasts depended on the accurate wind field. First, the parameters of the blended wind field, which was composed of the ERA5 reanalysis wind field and the MRV parametric typhoon wind field, were modified for Typhoons Meranti and Megi in 2016. By comparing different time of parametric typhoon wind field, the best track data, and the radius of the maximum wind speed (Rmax), the most suitable parameters for the sea area around Taiwan can be obtained. In this study, the SWH hindcasts were obtained by using the best track data from the Central Weather Bureau (CWB) of Taiwan and the Rmax of Willoughby and Rahn (2006) for the blended wind field which gave a better simulation performance. After that, th results of comparing between the modified blended wind field and ERA5 reanalysis wind field which are used to evaluate the suitability of typhoon tracks passed Taiwan were shown, it showed that the ERA5 wind field was more suitable for most of the typhoon events, but for some buoys, which the measured SWHs were greater than 6 meters, the blended wind field can be used to revise the ERA5 wind field.

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