Numerical Simulation of Convective Clouds and Boundaries

采用 COMMAS 和 MM5 模型的数值模拟用于研究大气中的对流现象，特别强调具有内部或外部生成边界的现象。 该研究包括以下主题：（1）沿干线的对流起始；（2）1996年7月17日至18日芝加哥洪水中锋面、流出边界、云边界和低空急流的重要性；（3）风暴与低空边界相互作用的动力学和热力学；（4）1996年4月19日在伊利诺伊州和邻近州爆发的龙卷风。这些研究的结果为大气环流系统提供了基本见解并为大气环流系统提供了指导。预报恶劣天气事件。

Numerical simulations employing the COMMAS and MM5 models are employed for investigating convective phenomena in the atmosphere, with special emphasis on phenomena with internally or externally generated boundaries. The research includes the following topics:(1) convective initiation along drylines;(2) the importance of fronts, outflow boundaries, cloud boundaries, and the low-level jet in the Chicago flood of July 17-18, 1996;(3) dynamics and thermodynamics of storm interactions with low-level boundaries;(4) the tornado outbreak of April 19, 1996, in Illinois and adjacent states.Results of these studies provide fundamental insight on atmospheric circulation systems and guidance for forecasting severe weather events.