论文标题

大气边界层中的可变涡流粘度从年龄的风速轮廓

Variable eddy viscosities in the atmospheric boundary layer from ageostrophic wind-speed profiles

论文作者

Lyons, Tony

论文摘要

我们从凸风速轮廓中生成Ekman层中的显式依赖高度粘度系数。我们获得的解决方案是根据流程顶和底部的风向之间的相对偏转角,以及地球风速和速度量表的参数化,我们将其解释为在垂直方向上的水平动量的传递速率。该溶液可用于推断Ekman层的厚度,以不同于经典Ekman螺旋的各种偏转角。

We generate explicit height-dependent eddy viscosity coefficients in the Ekman layer from convex wind speed profiles. The solutions we obtain are parameterized in terms of the relative deflection angle between the wind directions at the top and bottom of the flow, as well as the geostrophic wind speed and a velocity scale we interpret as the transfer rate of horizontal momentum in the vertical direction. The solutions may be used to infer the thickness of the Ekman layer for a variety of deflection angles different from deflection angle of the classic Ekman spiral.

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