Mobile Doppler Radar Observations of Tornados

龙卷风的移动多普勒雷达观测

• 批准号: 9616730
• 负责人: Calvin Swift
• 金额: $ 28.6万
• 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: 1997
• 资助国家: 美国
• 起止时间: 1997-05-01 至 2000-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9616730&HistoricalAwards=false
• 关键词: Mobile; Doppler; Radar; Observations; Tornados

9616730 McIntosh While much has been learned about the structure of tornadic storms over the last few years, some problems still remain unsolved. For example, progress has been made over the last decade in understanding the structure of tornadic thunderstorms and the general environment they create that is conducive for tornado development. Still unresolved, however, are details of how and why tornadoes are triggered in some storms, but not in others and the knowledge of the detailed structure of the tornado itself. Scientists from the University of Oklahoma and the University of Massachusetts propose to continue a productive cooperative effort to study the near environment and detailed structure of tornadoes. In the first year of this project, substantial improvements will be made to a mobile, high-resolution, ground-based, 3-mm wavelength, pulsed Doppler radar from the University of Massachusetts. The radar upgrades will allow collection of data with improved resolution in both time and space. In the second and third years, the improved mobile radar will be deployed in a collaborative effort between the University of Massachusetts and scientists from the University of Oklahoma. The objective is to map the Doppler velocity and reflectivity fields in and adjacent to tornadoes and their parent circulations. The purpose of the experiment is to learn how and why tornadoes form, and to determine their internal structure. If successful the researchers will obtain the highest-resolution measurements ever made of the structure of a tornado and its near environment. This may lead to better understanding of the process of tornado genesis and improved forecasts. ***

小行星9616730 虽然在过去的几年里，人们对龙卷风的结构有了很多了解，但有些问题仍然没有解决。 例如，在过去十年中，人们在了解龙卷风雷暴的结构以及它们所创造的有利于龙卷风发展的一般环境方面取得了进展。 然而，仍然没有解决的细节是如何和为什么龙卷风在一些风暴中被触发，而不是在其他风暴中，以及龙卷风本身的详细结构的知识。 来自俄克拉荷马州大学和马萨诸塞州大学的科学家们提议继续进行富有成效的合作，研究龙卷风的附近环境和详细结构。 在该项目的第一年，将对马萨诸塞州大学的一个移动的、高分辨率、地基、3毫米波长、脉冲多普勒雷达进行重大改进。 雷达升级将使数据收集在时间和空间上都具有更高的分辨率。 在第二年和第三年，改进的移动的雷达将在马萨诸塞州大学和俄克拉荷马州大学的科学家之间的合作下部署。 目的是绘制龙卷风及其母环流内部和附近的多普勒速度场和反射率场。 实验的目的是了解龙卷风如何形成以及为什么形成，并确定它们的内部结构。 如果成功，研究人员将获得有史以来对龙卷风结构及其附近环境的最高分辨率测量。 这可能会导致更好地了解龙卷风的成因过程和改进的预报。 ***