RUI: The Characteristics of Cloud-to-ground Lightning in High Plains Thunderstorms (Hailswath II)

RUI：高原雷暴中云对地闪电的特征（Hailswath II）

• 批准号: 8722916
• 负责人: John Helsdon
• 金额: $ 11.45万
• 依托单位: South Dakota School of Mines and Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-03-01 至 1991-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8722916&HistoricalAwards=false
• 关键词: RUI; Characteristics; Cloud; ground; Lightning

The objective of this research is the investigation of characteristics of cloud-to-ground (CG) lightning in High Plains thunderstorms during the North Dakota Thunderstorm Project, scheduled for the summer of 1989. Professor Helsdon will use existing direction finders to obtain data on the time, location, stroke multiplicity, polarity, and signal strength of the CG lightning. A graphics display system will be developed to analyze the lightning positions with respect to satellite and radar data. Lightning locations with respect to radar and satellite image features will be analyzed and compared with previous results from other regions of the country. The relationship between feeder cell evolution and CG lightning characteristics will be investigated and the effects of hail episodes on lightning characteristics will be analyzed. Finally, a test for the effects of glaciogenic seeding of CG lightning will be made.

这项研究的目的是研究北达科他州雷暴项目期间，计划于1989年夏季进行的雷雨雷暴的特征（CG）雷击。 将开发图形显示系统来分析有关卫星和雷达数据的闪电位置。 将分析有关雷达和卫星图像特征的闪电位置，并将其与该国其他地区的先前结果进行比较。 将研究进料细胞演化与CG闪电特征之间的关系，并将分析冰雹发作对闪电特征的影响。 最后，将对CG闪电的冰原播种作用进行测试。