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OALib Journal期刊
ISSN: 2333-9721
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THE INFLUENCES OF OROGRAPHY UPON THE FLOW WITHIN EKMAN BOUNDARY LAYER UNDER THE APPROXIMATION OF GEOSTROPHIC MOMENTUM

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Abstract:

In this paper, the influences of orography on the boundary layer flow with the approximation of geostrophic momentum are studied. The wind velocity at the lower boundary will not always be zero when the orography exists. So the structure of the boundary layer flow, as well as the vertical velocity at the top of the boundary layer, is affected. There are three factors affecting the vertical motion at the top of the boundary layer: lifting due to orography; divergence due to Ekman flow, and advection of the geostrophic momentum. These effects and the features of the flow within the boundary layer are discussed in detail.

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