Sensitive study of the long and short surface wave-induced vertical mixing in a wave-circulation coupled model

Sensitive study of the long and short surface wave-induced vertical mixing in a wave-circulation coupled model
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波浪-环流耦合模型中长短面波引起的垂直混合的敏感性研究

DOI:
10.1007/s13131-012-0215-y
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发表时间:
2012-08
影响因子:
1.4
通讯作者:
Wang Guansuo
Wang Guansuo
中科院分区:
地球科学2区
文献类型:
--
作者:
Zhao Chang;Qiao Fangli;Xia Changshui;Wang Guansuo

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MASNUM研究小组之前的研究已经证明了波致混合(Bv)在改善海洋上层热结构模拟方面的有效性。通过将不同的bv产品纳入MASNUM波环流耦合模型,进一步研究了bv的机制。首先,设计了实验来探索bv的影响,其中包含不同波长(l)的贡献。通过对非bv情况、短波情况(l<300 m)和长波情况(l<300 m) 3种实验结果的比较,发现长波是bv在上层海洋产生混频的最重要组成部分。由于膨胀在混合过程中起主导作用,因此对风的参数化可能不是一种合适的方法。其次,研究了不同时间尺度(包括每日和每月)的效果。结果表明,月平均bv比日平均bv的影响更大,特别是在夏季。
The previous studies by the MASNUM research team have shown the effectiveness of the wave-induced mixing (Bv) in improving the simulation of upper-ocean thermal structure. The mechanisms ofBvare further investigated by incorporating differentBvproducts into the MASNUM wave-circulation coupled model. First, experiments were designed to explore the effects ofBv, which contain the contributions at different wave lengths (l). The results of three experiments, the non-Bvcase, the short-wave case (l<300 m), and the long-wave case (l>300 m) are compared, and it is found that the long waves are the most important component forBvto generate mixing in the upper ocean. As the swell plays dominant role in mixing, the parameterization ofBvinto wind may be not a proper way. Second,Bveffects at different time-scales, including daily and monthly, were examined. The results show that the monthly averagedBvhas larger impact than the daily averagedBv, especially in summer.
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