Effect of Langmuir circulation on upper ocean mixing in the South China Sea
Effect of Langmuir circulation on upper ocean mixing in the South China Sea
复制标题
朗缪尔环流对南海上层海洋混合的影响
DOI：
10.1007/s13131-013-0285-5
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发表时间：
2013-02
影响因子：
1.4
通讯作者：
Fan Wei
中科院分区：
文献类型：
--
作者：
Li Shuang;Song Jinbao;Fan Wei
利用双向波流耦合模式研究了朗缪尔环流对上层海洋混合的影响。该模式通过模式耦合工具包将海洋环流模式ROMS（区域海洋模拟系统）与表面波模式SWAN（模拟近海岸波浪）耦合。许多一维研究和机理分析工作已经证明了LC的重要性。本文的工作主要是在三维模型中引入LC效应，并将其应用到真实的场模拟中。在ROMS中，对Mellor-Yamada湍流闭合混合格式进行了修正，加入了LC效应。SWAN从ROMS输入水深、自由表面和海流信息，同时每6秒将重要的波浪参数输出到ROMS用于斯托克斯波计算。将该耦合模式应用于2008年9月的南海巡航。结果表明，LC使大部分地区的湍流度增加，混合层深度加深0 ~ 10 m量级，尤其是在我们观测最多的南海北部地区。耦合模型还包括波浪破碎，这将使更多的能量进入水中。当LC与波浪破碎共同作用时，更多的能量被传递到深层，加速了MLD的加深。在南海北部，其影响更为明显。这与珠江三角洲地区的大风事件是一致的。另外一个原因是水深较浅，这也使得它们很容易影响海洋混合。
Effect of Langmuir circulation (LC) on upper ocean mixing is investigated by a two-way wave-current coupled-model. The model is coupled of the ocean circulation model ROMS (regional ocean modeling system) to the surface wave model SWAN (simulating waves near shore) via the model-coupling toolkit. The LC already certified its importance by many one-dimensional (1D) research and mechanism analysis work. This work focuses on inducing LC’s effect in a three-dimensional (3-D) model and applying it to real field modeling. In ROMS, the Mellor-Yamada turbulence closure mixing scheme is modified by including LC’s effect. The SWAN imports bathymetry, free surface and current information from the ROMS while exports significant wave parameters to the ROMS for Stokes wave computing every 6 s. This coupled model is applied to the South China Sea (SCS) during September 2008 cruise. The results show that LC increasing turbulence and deepening mixed layer depth (MLD) at order ofO(10 m) in most of the areas, especially in the north part of SCS where most of our measurements operated. The coupled model further includes wave breaking which will brings more energy into water. When LC works together with wave breaking, more energy is transferred into deep layer and accelerates the MLD deepening. In the north part of the SCS, their effects are more obvious. This is consistent with big wind event in the area of the Zhujiang River Delta. The shallow water depth as another reason makes them easy to influence the ocean mixing as well.
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影响因子：
2.3
作者：
S. Cai;Xiaomin Long;Hailong Liu;Sheng’an Wang
通讯作者：
S. Cai;Xiaomin Long;Hailong Liu;Sheng’an Wang
DOI：
10.1016/j.dsr.2004.09.004
发表时间：
2005-02
期刊：
ArXiv
影响因子：
--
作者：
Ming Li;C. Garrett;E. Skyllingstad
通讯作者：
Ming Li;C. Garrett;E. Skyllingstad
影响因子：
3.7
作者：
P. Sullivan;James C. McWilliams;W. Melville
通讯作者：
P. Sullivan;James C. McWilliams;W. Melville
影响因子：
3.5
作者：
R. Harcourt;E. D’Asaro
通讯作者：
R. Harcourt;E. D’Asaro
影响因子：
2.4
作者：
H. Nepf;S. Monismith
通讯作者：
H. Nepf;S. Monismith