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Validation of a simple diagnostic relationship for downslope flows
Atmospheric Science Letters ( IF 3 ) Pub Date : 2020-03-02 , DOI: 10.1002/asl.965
Joan Cuxart 1 , Daniel Martínez-Villagrasa 1 , Ivana Stiperski 2
Affiliation  

A simple conceptual view of downslope flows allows a derivation of a diagnostic relationship between the maximum depth of the flow, its speed, the slope angle and the cooling flux. This relationship is obtained considering that the turbulence cooling causing the air to flow downslope is essentially compensated by the warming by compression as the flow reaches higher pressure levels. The obtained relationship is consistent with the bulk heat budget for the along‐slope flows, and its agreement with existing prognostic layer‐averaged models is checked. Finally, the depth of the flow obtained from the diagnostic relationship is compared against the observational estimations of katabatic flows from two experimental campaigns.

中文翻译:

验证下坡流的简单诊断关系

下坡流动的简单概念视图允许推导流动的最大深度、其速度、倾斜角和冷却通量之间的诊断关系。考虑到当气流达到更高的压力水平时,导致空气向下流动的湍流冷却基本上通过压缩变暖来补偿这种关系,从而获得这种关系。所获得的关系与沿坡流动的整体热预算一致,并检查了其与现有预测层平均模型的一致性。最后,将从诊断关系中获得的流动深度与来自两个实验活动的下沉流动的观测估计进行比较。
更新日期:2020-03-02
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