Collaborative Research: Large Hail Accumulations in Thunderstorms

合作研究：雷暴中的大量冰雹聚集

• 批准号: 1661583
• 负责人: Katja Friedrich
• 金额: $ 42.62万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2022-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1661583&HistoricalAwards=false
• 关键词: Collaborative; Research; Large; Hail; Accumulations

Thunderstorms that produce deep hail accumulations pose a substantial risk to life and property resulting in motor vehicle accidents, road closures, airport delays, urban and river flooding, and water rescues. Data inhomogeneities and inadequacies in monitoring hail characteristics in thunderstorms leads to low confident in projecting future hail occurrence and evaluation of future climate predictions. The overarching goal of the research is to analyze the microphysical and dynamical conditions necessary for large amounts of in-cloud hail production that lead to deep surface hail accumulations by developing and validating a robust set of characteristic storm properties unique to significant hail accumulation; determining the role of mechanisms enhancing hail production; and determining temporal and spatial variation of hail accumulations in observations and simulations. Intellectual Merit:The intellectual merit lies in its contribution to a comprehensive understanding of the dual-polarization and lighting characteristics in severe thunderstorms with significant hail accumulations; how and why they are linked to environmental conditions, storm morphology, terrain, and outflow boundaries; and if state-of-the-art regional climate and weather forecasting models are capable of reproducing hail accumulation characteristics derived from observations. The research will advance our understanding of processes contributing to large hail/graupel production in thunderstorms, improve the forecasting of extreme events that cause natural disasters, and extend current capabilities to directly benefit society. Broader Impacts:The broader impacts are that the studies will aid in better forecasting and nowcasting events with significant hail accumulation and provide basis for evaluating forecasting and regional climate simulations. Hailstorms have had large economical impacts through damage to property and agriculture with livestock fatalities and human injuries. This study will provide better insight if hail accumulation also provides useful information to issue reliable warnings to the public and assistance in severe weather management. Undergraduates and graduate students will participate in the scientific research through independent studies, internships, and a Ph.D. thesis. The project will promote the collaborations between the University Corporation for Atmospheric Research's Significant Opportunities in Atmospheric Research and Science program and the University of Colorado's Summer Multicultural Access to Research Training program, which are intended for underrepresented undergraduate students in science, math, and engineering.

产生深层冰雹积累的雷暴对生命和财产构成了重大风险，导致汽车事故，封路，机场延误，城市和河流洪水以及救水。数据不均匀性和监测雷暴中的冰雹特征的不良性导致对预测未来的冰雹发生和对未来气候预测的评估的信心低。该研究的总体目标是分析大量云中冰雹产生所需的微物理和动态条件，通过开发和验证一组强大的特征风暴特性，从而导致深层冰雹积累，这是显着的冰雹积累所独有的；确定增强冰雹产生的机制的作用；并确定观测和模拟中冰雹积累的时间和空间变化。知识分子的优点：知识分子的优点在于它对对冰雹积累的严重雷暴中对双极化和照明特征的全面理解的贡献；它们如何以及为什么与环境条件，风暴形态，地形和流出边界相关；并且，如果最先进的区域气候和天气预报模型能够再现从观察结果中得出的冰雹积累特征。这项研究将提高我们对雷暴中大型冰雹/graupel生产的过程的理解，改善对造成自然灾害的极端事件的预测，并扩展当前的能力以直接使社会受益。更广泛的影响：更广泛的影响是，这些研究将有助于更好地预测和现有的冰雹积累，并为评估预测和区域气候模拟提供了基础。冰雹通过对财产和农业的损害和牲畜死亡和人类伤害产生了巨大的经济影响。如果冰雹积累还提供有用的信息来向公众发出可靠的警告以及在恶劣天气管理方面的帮助，则这项研究将提供更好的见解。大学生和研究生将通过独立研究，实习和博士学位参加科学研究。论文。该项目将促进大气研究大学公司在大气研究和科学计划方面的重要机会与科罗拉多大学的夏季多元文化访问研究培训计划之间的合作，该计划旨在为科学，数学和工程学领域的代表性不足的本科生提供。

项目成果

CHAT: The Colorado Hail Accumulation from Thunderstorms Project

聊天：科罗拉多州雷暴冰雹项目

• DOI: 10.1175/bams-d-16-0277.1
• 发表时间: 2019
• 期刊: Bulletin of the American Meteorological Society
• 影响因子: 8
• 作者: Friedrich, Katja;Wallace, Robinson;Meier, Bernard;Rydell, Nezette;Deierling, Wiebke;Kalina, Evan;Motta, Brian;Schlatter, Paul;Schlatter, Thomas;Doesken, Nolan
• 通讯作者: Doesken, Nolan

The Lightning and Dual-Polarization Radar Characteristics of Three Hail-Accumulating Thunderstorms

3场冰雹雷暴的闪电和双偏振雷达特征

• DOI: 10.1175/waf-d-19-0224.1
• 发表时间: 2020
• 期刊: Weather and Forecasting
• 影响因子: 2.9
• 作者: Wallace, Robinson;Friedrich, Katja;Deierling, Wiebke;Kalina, Evan A.;Schlatter, Paul
• 通讯作者: Schlatter, Paul

Using Operational Radar to Identify Deep Hail Accumulations from Thunderstorms

使用业务雷达识别雷暴中的深冰雹累积

• DOI: 10.1175/waf-d-18-0053.1
• 发表时间: 2019
• 期刊: Weather and Forecasting
• 影响因子: 2.9
• 作者: Wallace, Robinson;Friedrich, Katja;Kalina, Evan A.;Schlatter, Paul
• 通讯作者: Schlatter, Paul