Dual Frequency Doppler Radar Observations of Tornadoes

龙卷风的双频多普勒雷达观测

• 批准号: 0000592
• 负责人: Andrew Pazmany
• 金额: $ 37.89万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-01 至 2003-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0000592&HistoricalAwards=false
• 关键词: Dual; Frequency; Doppler; Radar; Observations

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.

该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的多普勒雷达数据集进行详细分析，并将进行一次小型的、有重点的实地试验，以收集和分析更多的数据，以便更好地统计龙卷风及其环境的特征。 这项工作的主要目标是估计龙卷风中接近地面的风速，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，首席研究员将收集试验性的双波长雷达数据，这将有助于开发绘制强风暴中液态水和水滴大小分布场的技术。这项研究的成功完成将导致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。