The Evolution of the Airflow in Cumulus and Cumulus Congestus in a Low Shear High Stability Environment

该提案要求支持分析1992年夏季在佛罗里达州中部进行的对流和降水/电气化实验（CaPE）期间获得的观测结果。两架装备相似的“空中国王”同时穿越对流云层是本次计划的重点。重点将放在这些积云内的运动学场的演变上，这些积云在它们的生命周期中被采样了十几次。双机模式将提供近环境的基本特征观测，可见云，上升气流和下降气流，以及这些特征的边缘和内部的水平气流。将对几个观测较好的情况估计垂直质量通量和动量输运作为生命周期的函数。这些分析有可能成为研究低切变和高对流有效势能环境下湿对流运动结构的基准。

This proposal requests support to analyze observations obtained during the Convection and Precipitation/Electrification Experiment (CaPE) conducted in central Florida during the summer of 1992. Simultaneous traverses through convective clouds by two similarly equipped King Airs are the focus of the proposed work. Emphasis will be on the evolution of the kinematic fields within those cumuli that were sampled with more than a dozen passes during their life cycle. The two-aircraft pattern will provide observations of the basic characteristics of the near-environment, visible cloud, updraft and downdraft, and the horizontal flow in and at the edges of these features. Vertical mass flux and momentum transport as a function of life cycle will be estimated for several of the better observed cases. The analyses have the potential to be the bench-mark for the kinematic structure of moist convection in an environment characterized by low shear and high convective available potential energy.