Studies of the Evolution of Thunderstorm Electricity and Lightning

密西西比大学ATM-0220842马歇尔，Thomas C.密西西比大学标题：雷暴电和闪电演化研究本项目继续对新墨西哥理工大学朗缪尔实验室1999年夏天收集的数据进行分析，作为SEET项目(雷暴电演化研究)的一部分。这些数据包括两个研究雷达对雷暴的观测，地面电场测量网络，闪电测绘阵列测量的闪电的准确位置和时间，以及风暴中电场的气球探测。其目的是合成这些数据，以产生雷暴电学演变的连贯图景。主要电荷区的位置是由电场的气球测深推断的。然后比较在连续测深中测量到的电荷的位置和大小，以研究云的电学演化。还将带电区域的位置与闪电路径和雷达观测的降水模式进行比较，以了解这些量是如何相关的。这项工作促进了对雷暴电荷产生和闪电产生的理解，探索了雷暴的雷达结构与其产生的闪电之间的关系，并为更好地预测雷暴伴随的电气危险奠定了基础。

AbstractATM-0220842Marshall, Thomas C.University of MississippiTitle: Studies of the Evolution of Thunderstorm Electricity and LightningThis project continues the analysis of data collected in the summer of 1999 at Langmuir Laboratory of New Mexico Tech as part of the SEET project (Study of Electrical Evolution of Thunderstorms). The data consist of thunderstorm observations by two research radars, a surface network of electric-field measurements, the precise locations and times of lightning flashes measured by the Lightning Mapping Array, and balloon-soundings of the electric field in the storms. The objective is to synthesize the data to produce a coherent picture of thunderstorm electrical evolution. The locations of the main charge regions are inferred from the balloon soundings of the electric field. The locations and magnitudes of the charges measured in sequential soundings are then compared to study the electrical evolution of the cloud. The locations of the charged regions are also compared with the lightning paths and the radar-observed precipitation patterns to learn how these quantities are related. The work advances the understanding of charge generation and lightning production by thunderstorms, explores the relations between the radar structure of storms and the lightning they produce, and lays groundwork for better predictions of the electrical hazards that accompany thunderstorms.