Relation of slope winds to the ambient flow over gentle terrain
Relation of slope winds to the ambient flow over gentle terrain
复制标题
平缓地形上斜坡风与环境气流的关系
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
S. Larsen
中科院分区：
文献类型：
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作者：
L. Mahrt;S. Larsen
本文分析了在Risperson国家实验室连续四年收集的风塔资料，以研究缓坡对地面风的气候影响。在非常稳定的夜间条件下，地面空气倾向于沿着斜坡向下流动，至少是间歇性的，而不管上覆的环境风的方向。在上坡环境风较大且稳定性不高的情况下，下坡重力流通常会被阻止。然而，斜坡浮力效应仍然是重要的，因为它阻碍了冷空气的上坡流动。这种效应对这里研究的数据具有气候重要性。
Four years of continuous tower data collected at the Risø National Laboratory are analyzed to study the climatological influence of a gentle slope on surface winds. Under very stable nocturnal conditions, the surface air tends to flow down the slope, at least intermittently, regardless of the direction of the overlying ambient wind. With more significant upslope ambient wind and only modest stability, downslope gravity flow is normally prevented. However, the slope-buoyancy effect is still of importance in that it retards the upslope flow of cold air. This effect is of climatic importance for the data studied here.