SGER: Infrared Thermographic Evaluation of Tornadic Convective Systems

SGER：龙卷风对流系统的红外热成像评估

• 批准号: 0332894
• 负责人: Howard Bluestein
• 金额: $ 4.54万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-05-01 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0332894&HistoricalAwards=false
• 关键词: SGER; Infrared; Thermographic; Evaluation; Tornadic

While much progress has been made over the last several years in understanding tornado genesis and dissipation, the exact factors that control the formation and demise of tornadoes is not known. Recent research using mobile Doppler radars has revealed much about the structure of tornadoes and tornadic thunderstorms. Many formation/dissipation theories, however, require an understanding of detailed thermal structure in and near the tornado and Doppler radars are not well suited to provide this information.In this Small Grant for Exploratory Research, radiometric imaging equipment will be used to map the temperature field at cloud base in severe convective storms and in tornado condensation funnels. The project will be conducted in conjunction with another NSF-funded project (ATM-0241037), in which one of the main objectives is to use mobile Doppler radars to study tornado formation and tornadoes in convective storms. It is anticipated that the temperature field at cloud base near the storms' main updraft region may contain clues as to whether or not tornado formation may ensue. This project represents the first attempt to sense remotely, thermodynamic information at cloud base in severe convective storms, using a ground-based mobile platform. If the project is successful, future field experiments could lead to an increased understanding of tornado genesis and an increase in skill in tornado forecasting. The latter could lead to a decrease in deaths and injuries from tornadoes.

尽管过去几年在理解龙卷风的创世纪和耗散方面取得了很多进展，但控制龙卷风的形成和灭亡的确切因素尚不清楚。 最近使用移动多普勒雷达的研究揭示了龙卷风和龙卷风雷暴的结构。 但是，许多形成/耗散理论都需要了解龙卷风和多普勒雷达中及其附近的详细热结构不适合提供此信息。在这项用于探索性研究的小拨款中，辐射成像设备将用于在严重的对流风暴和Tornado Condensation Condensation Condensation Condensation Convensation Condensation Condensation Confensation Funnels中绘制温度场。 该项目将与另一个由NSF资助的项目（ATM-0241037）一起进行，其中一个主要目标是使用移动多普勒雷达在对流风暴中研究龙卷风组和龙卷风。 可以预计，风暴主要上升区域附近的云基层的温度场可能包含有关是否可能发生龙卷风形成的线索。 该项目是使用地面移动平台在严重的对流风暴中首次尝试在云基础上远程感知热力学信息的尝试。 如果该项目成功，未来的现场实验可能会导致人们对龙卷风创世纪的了解和龙卷风预测技能的提高。 后者可能导致龙卷风的死亡和伤害减少。