...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physical Oceanography >Vertical Profiles of Wave-Coherent Momentum Flux and Velocity Variances in the Marine Atmospheric Boundary Layer
【24h】

Vertical Profiles of Wave-Coherent Momentum Flux and Velocity Variances in the Marine Atmospheric Boundary Layer

机译：海洋大气边界层波相干动量通量和速度方差的垂直剖面

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The wave-coherent momentum flux and velocity variances are investigated using a theoretical model and open-ocean measurements. The spectrum-integrated wave-coherent (SIWC) momentum flux and velocity variances decay roughly exponentially with height. The exponential decay coefficients of the SIWC momentum flux and velocity variances decrease with increasing peak wavenumber. The phases of the wave-coherent horizontal (vertical) velocity fluctuations are approximately 180 degrees (90 degrees) under waves with wind-wave angle |alpha(1)| 90 degrees. In general, the ratio of the SIWC momentum flux to the total momentum flux under swell conditions is higher than that under wind-wave conditions at the same height. At a height of 9.9 m, the SIWC vertical (horizontal) velocity variances can exceed 30% (10%) of the total vertical (horizontal) velocity variances at high wave ages. The impact of SIWC momentum flux on wind profiles is determined mainly by the surface SIWC momentum flux ratio, the decay coefficient of the SIWC momentum flux, and the sea surface roughness length, with the first two factors being dominant. The results of this study suggest a methodology for parameterizing the SIWC momentum flux and the total momentum flux over the ocean. These results are important for simulating the marine atmospheric boundary layer and should be used in model development.
机译：使用理论模型和开放海洋测量研究了波相干动量通量和速度方差。频谱积分波相干（SIWC）动量通量和速度方差随高度大致呈指数衰减。 SIWC动量通量和速度方差的指数衰减系数随峰值波数的增加而减小。在风波角为|α（1）|的波下，波的相干水平（垂直）速度波动的相位约为180度（90度）。 <90度。通常，在相同高度下，浪涌条件下SIWC动量通量与总动量通量之比要高于风浪条件下的SIWC动量通量与总动量通量之比。在9.9 m的高度处，SIWC垂直（水平）速度变化可以超过高波龄下总垂直（水平）速度变化的30％（10％）。 SIWC动量通量对风廓线的影响主要取决于表面SIWC动量通量比，SIWC动量通量的衰减系数和海面粗糙度长度，其中前两个因素占主导地位。这项研究的结果提出了一种参数化SIWC动量通量和海洋总动量通量的方法。这些结果对于模拟海洋大气边界层很重要，应在模型开发中使用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号