新的拖曳系数参数化方案在飓风“卡特里娜”和“瑞塔”过程海浪数值模拟中的应用研究-海洋预报

新的拖曳系数参数化方案在飓风“卡特里娜”和“瑞塔”过程海浪数值模拟中的应用研究

单位：1. 山东省海洋生态环境与防灾减灾重点实验室, 山东青岛 266100;
2. 国家海洋局北海预报中心, 山东青岛 266100;
3. 海军航空大学, 山东烟台 264000;
4. 自然资源部烟台海洋中心, 山东烟台 264000;
5. 国家海洋局北海海洋技术保障中心, 山东青岛 266100

关键词：海表面拖曳系数飓风海浪 COARE 3.0算法

分类号：P731.33

出版年·卷·期（页码）：2022·39·第五期（8-16）

摘要：

基于海气热通量COARE 3.0算法考虑波浪影响的参数化方案，选用9个飓风过程的12份浮标实测资料，得到了0～41 m/s风速范围内的海面拖曳系数，将其拟合为关于风速的参数化关系，以便于数值应用。将新的参数化关系应用到飓风“卡特里娜”和“瑞塔”的海浪数值模拟中，通过与美国国家浮标数据中心的实测数据进行对比，表明新的参数化方案相较模式原有方案所得结果更为准确。

In this paper, a parameterization scheme considering wave effect based on the air-sea heat flux COARE 3.0 algorithm is used to obtain the sea surface drag coefficient for the wind speed between 0 and 41 m/s by selecting 12 buoy observations during nine hurricane processes. The sea surface drag coefficient is fitted to a parametric relation about wind speed for numerical application. The new parametric relation is applied to the wave numerical simulation during hurricanes "Katrina" and "Rita". By comparing with the measured data of the National Data Buoy Center buoys, it is found that the new parameterization scheme is more accurate than the original one in the model.

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