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渤海湾风浪预报数值模式的研究

DOI: 10.3969/j.issn.1006-7043.201301045

Keywords: 渤海湾, 风浪模式, 预报数值模式, SWAN模型, WRF模式, 风能输入, 白浪耗散

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Abstract:

为提高渤海海域海浪数值预报工作的精度,从风浪模式的角度,借助SWAN模型的物理过程,针对风输入项中线性系数的改进进行了论证。与荣城站观测结果对比表明,默认线性系数0.001 5较为合理。结合Komen、Janssen和Westhuysen 3种不同风指数增长表达式和对应的白浪破碎表达式,设计和研究不同组合方案下,风浪模式在渤海湾海数值模拟中的适用性。3个方案模拟的波浪特征值与实测值进行比较,结果显示,有效波高值与实测值变化趋势相同,模拟平均周期均偏小,且Westhuysen方案模拟效果最好。在计算结果统计分析中,模拟结果与实测值的相关系数相差不大,模拟效果较理想。??

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