The effects of wind-driven waves and ocean spray on the drag coefficient and near-surface wind profiles over the ocean
The effects of wind-driven waves and ocean spray on the drag coefficient and near-surface wind profiles over the ocean
复制标题
风驱动波浪和海洋喷雾对海洋阻力系数和近地表风廓线的影响
DOI：
10.1007/s13131-016-0950-6
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发表时间：
2016-11
期刊：
影响因子：
--
通讯作者：
YANG Liangui
中科院分区：
文献类型：
--
作者：
ZHANG Ting;SONG Jinbao;LI Shuang;YANG Liangui
通过在总应力中引入波浪诱导分量和喷雾诱导分量，提出了一个基于Ekman理论的数学模型，详细描述了风致波浪和海洋喷雾对海洋大气边界层动量输送的影响。得到了修正的Ekman模型的解析解。通过风浪谱和波浪增长率来评估波浪应力的影响。结果表明，在中低风速下，波浪应力和喷雾应力对阻力系数和风廓线的影响小于湍流应力。当风速达到25m以上时，应更多地考虑喷雾对地表应力的贡献，而不是风致波浪/S，这是由于“喷雾应力”的作用。结果表明，当风速较大时，阻力系数随风速的增大而减小。分析了不同波龄的风浪和喷雾对近地表风速分布的影响，结果表明，喷雾的产生导致了大气边界层风速的增大。并与已有的野外观测资料进行了比较。算例和现场观测结果与理论解的比较表明，在高风速条件下，喷雾应力比波浪应力对海洋大气边界层的影响更为显著。
By introducing a wave-induced component and a spray-induced component to the total stress, a mathematical model based on the Ekman theory is proposed to detail the influence of wind-driven waves and ocean spray on the momentum transport in a marine atmosphere boundary layer (MABL). An analytic solution of the modified Ekman model can be obtained. The effect of the wave-induced stress is evaluated by a wind wave spectrum and a wave growth rate. It is found that the wave-induced stress and spray stress have a small impact compared with the turbulent stress on the drag coefficient and the wind profiles for low-to-medium wind speed. The spray contribution to the surface stress should be much more taken into account than the winddriven waves when the wind speed reaches above 25 m/s through the action of a “spray stress”. As a result, the drag coefficient starts to decrease with increasing wind speed for high wind speed. The effects of the winddriven waves and spray droplets on the near-surface wind profiles are illustrated for different wave ages, which indicates that the production of the spray droplets leads the wind velocity to increase in the MABL. The solutions are also compared with the existed field observational data. Illustrative examples and the comparisons between field observations and the theoretical solutions demonstrate that the spray stress has more significant effect on the marine atmosphere boundary layer in the condition of the high wind speed compared with wave-induced stress.
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影响因子：
--
作者：
B. Liu;Changlong Guan;Lian Xie
通讯作者：
B. Liu;Changlong Guan;Lian Xie
DOI：
10.1016/j.dsr.2008.12.014
发表时间：
2009-05
期刊：
--
影响因子：
--
作者：
Jinbao Song
通讯作者：
Jinbao Song
DOI：
--
发表时间：
2001-05
期刊：
--
影响因子：
--
作者：
E. L. Andreas
通讯作者：
E. L. Andreas
DOI：
10.1134/s0001433813030110
发表时间：
2013-08
期刊：
Izvestiya, Atmospheric and Oceanic Physics
影响因子：
--
作者：
V. Polnikov
通讯作者：
V. Polnikov
影响因子：
3.6
作者：
Elfouhaily, T;Chapron, B;Vandemark, D
通讯作者：
Vandemark, D