摘要
本文在正压条件假设下,对一组σ坐标系中的运动方程作无量纲处理,引入地形坡度特征参数,用动力学方法初步分析得到了大地形纯动力作用所产生的流场爬坡和绕坡这两种形式,比较了各种地形坡度情况下爬绕成份的相对大小,指出爬坡在地形南北坡的差异及其物理成因。最后本文还简单探讨了陡坡地形附近绕流调整快变过程的机制。
The simplified eqautions in ?- coord inate system, subject to the assumption of the barotropic flow,are nondimensionalized. Then, the Parameter of topographical slope is introduced. Bv means of Pre limiaary dynamic analysis, the climbing and deflective flow on the topographv caused bv pure dynamic influence of topography are obtained, and the Proportions of this two flowing types are discussed which depend on toPograPhical sloPes. The difference of climbing flows between southern sloPe and northern sloPe as well as its Physical reasons is also given. In the final, the 'adjusting process turning around the steep sloping mountain is simply studied.
出处
《气象科学》
CSCD
北大核心
1989年第1期27-36,共10页
Journal of the Meteorological Sciences
