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Effect of wave-induced mixing on Antarctic sea ice in a high-resolution ocean model

机译：高分辨率海洋模型中波浪诱导的混合对南极海冰的影响

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摘要

In this study, we investigate how sea ice extent and thickness are affected by additional turbulent mixing from unbroken surface waves. This surface wave mixing' (SWM) is parameterized by the inclusion of an extra mixing term in the k-epsilon turbulence scheme implemented in a global-scale ocean model (MOM5). Relative to simulations without SWM, we observe a reduction of seasonal extremes of sea ice extent in the Antarctic of about 9%. This reduction brings the seasonal amplitude of sea ice extent significantly closer to observations, as well as causing an increase in sea ice thickness of up to 15cm leading up to and during the Antarctic summer.
机译：在这项研究中，我们研究了不间断表面波引起的附加湍流混合对海冰范围和厚度的影响。通过在全球规模海洋模型（MOM5）中实施的k-ε湍流方案中包括一个额外的混合项，可以对“表面波混合”（SWM）进行参数化。相对于没有SWM的模拟，我们观察到南极海冰面积的季节性极端值减少了约9％。这种减少使海冰范围的季节性振幅明显更接近观测值，并且导致南极夏季之前和期间的海冰厚度增加了15厘米。

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  • 来源
    《Ocean Dynamics》 |2019年第6期|737-746|共10页
  • 作者

    Thomas Steven; Babanin Alexander V.; Walsh Kevin J. E.; Stoney Lachlan; Heil Petra;

  • 作者单位

    Univ Melbourne, Dept Infrastruct Engn, Melbourne, Vic, Australia;

    Univ Melbourne, Dept Infrastruct Engn, Melbourne, Vic, Australia|Natl Lab Marine Sci & Technol, Qingdao, Shandong, Peoples R China;

    Univ Melbourne, Sch Earth Sci, Melbourne, Vic, Australia;

    Univ Melbourne, Dept Infrastruct Engn, Melbourne, Vic, Australia|Australian Bur Meteorol, Brisbane, Qld, Australia;

    Australian Antarctic Div, Hobart, Tas, Australia|Antarctic Climate & Ecosyst Cooperat Res Ctr, Hobart, Tas, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Surface wave mixing; Antarctic Sea ice;

    机译：面波混合;南极海冰;

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