Dual Frequency Doppler Radar Observations of Tornadoes

这项研究项目的目标是更好地了解强对流风暴和龙卷风的动力学。将对在龙卷风中收集的移动多普勒雷达数据集进行详细分析，并将进行小型、聚焦的现场实验，以收集和分析更多数据，以获得更好的龙卷风及其环境的统计特征。这项工作的主要目的将是估计龙卷风中近地面的风速，确定龙卷风中的三维风场，确定龙卷风形成和消散的原因，并找出为什么一些超级单体风暴会产生龙卷风，而另一些则不会。此外，首席调查员将收集试点双波长雷达数据，这将有助于开发技术，绘制严重风暴中的液态水和液滴大小分布场。成功完成这项研究将有助于建立更好的龙卷风和龙卷风成因的概念模型，并最终导致更准确的预测。

The goal of this research project is to understand better the dynamics of severe convective storms and tornadoes. Mobile Doppler radar data sets collected in tornadoes will be analyzed in detail and a small, focussed field experiment will be conducted to collect and analyze additional data in order to obtain a better statistical characterization of tornadoes and their environment. The main thrust of this effort will be to estimate wind speeds near the ground in tornadoes, determine the three-dimensional wind field in tornadoes, determine why tornadoes form and dissipate and find out why some supercell storms produce tornadoes, while others do not. Additionally, the Principal Investigator will collect pilot dual-wavelength radar data this will help in development of techniques to map the liquid water and drop size distribution fields in severe storms.Successful completion of this research will lead to better conceptual models of tornadoes and tornado genesis and eventually lead to more accurate predictions.