The Initiation and Behavior of Severe Convective Storms

虽然在过去的十年里，在了解龙卷风及其母体雷暴的结构特征方面取得了很大的进展，但仍有许多问题没有得到解答。其中包括：真正引发对流和龙卷风的关键因素是什么？这是一个为期三年的项目，其目标是更好地了解强对流风暴的形成和行为方式。本文将结合1994年和1995年在美国南部平原进行的龙卷风旋转起源验证实验（VORTEX）的数据分析、常规数据集和先进的中尺度数值天气模式来实现本研究的目标。重点领域包括地面特征和云层的小尺度变化对干旱线附近开始的风暴的影响，龙卷风的形成，以及环境与初始风暴形成模式之间的关系对强对流风暴的后续演变。这项研究的结果将提高我们预测美国平原地区恶劣天气的能力

9612674 Bluestein While much progress has been over the last decade in understanding the structural characteristics of tornadoes and their parent thunderstorms, many questions still remain unanswered. Among these are What are the critical factors that actually trigger convection and tornadoes? This is a three-year project whose objective is to understand better the ways in which severe convective storms form and behave. A combination of analyses of data from the Verification of Origins of Rotation in Tornadoes Experiment (VORTEX) conducted in the Southern Plains of the U. S. in 1994 and 1995, conventional data sets, and advanced mesoscale numerical weather models will be used to achieve the objectives of this research. Areas of focus include the effects of small-scale variations in surface characteristics and clouds on storms initiated near the dryline, tornadogenesis, and the relationship between the environment and the mode of initial storm formation on the subsequent evolution of severe convective storms. The results of this research will improve our ability to forecast severe weather in the Plains region of the U. S. ***