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对全球非结构有限体积法海洋模式(Global-FVCOM)计算的全球海洋潮汐东中国海部分进行了验证。模式与资料的比较范围为24°N到41°N、118°E到132°E。根据计算结果得出了东中国海的M2、S2、K1、O1分潮的同潮图。分潮计算结果与东中国海区域99个实测站点比较结果总体较好,局部区域水深和网格精度欠缺导致偏差偏大。M2分潮振幅均方根偏差为15 cm,迟角均方根偏差为10°,K1分潮振幅均方根偏差为8.2 cm,迟角均方根偏差为9°。初步结果将有利于进一步建立全球多尺度潮流-洋流耦合模型。研究亮点:采用全球一体化的非结构有限体积法模式计算了全球潮汐,东海潮汐比较结果表明模式较好地反演了该地区潮波特征。全球模式的研究有助于加深对全球变化和近海变化的理解,具有广阔的研究前景。
The global oceanic tidal East China Sea section of the Global Unstructured Finite Volume Method (Global-FVCOM) is verified. The pattern and data comparison range from 24 ° N to 41 ° N, 118 ° E to 132 ° E. Based on the calculation results, the same tide diagram of the tide of M2, S2, K1 and O1 in the East China Sea is obtained. The result of the tidal current calculation is generally better than that of the 99 measured stations in the East China Sea. The local water depth and the lack of grid precision lead to large deviations. The root mean square deviation of M2 tide amplitude was 15 cm, the root mean square deviation of late angle was 10 °, the root mean square deviation of K1 tide amplitude was 8.2 cm, and the root mean square deviation of late angle was 9 °. The preliminary results will be conducive to the further establishment of a global multi-scale current-ocean current coupling model. Research Highlights: Global tides have been calculated using the globally integrated unstructured finite volume model. The tide comparison in the East China Sea shows that the model is a good proxy for tidal wave characteristics in the region. The study of the global model will help to deepen the understanding of global changes and offshore changes and have broad research prospects.