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.

产生深层冰雹堆积的雷暴对生命和财产构成重大风险，导致机动车事故、道路封闭、机场延误、城市和河流洪水以及水上救援。雷暴中冰雹特征监测的数据不均匀性和不足导致对预测未来冰雹发生和评估未来气候预测的信心不足。该研究的总体目标是通过开发和验证大量冰雹积累所特有的一组强大的特征风暴特性，分析大量云内冰雹产生所需的微物理和动力学条件，从而导致深层地表冰雹积累；确定促进冰雹产生的机制的作用；并确定观测和模拟中冰雹累积的时间和空间变化。智力价值：智力价值在于对冰雹积聚强雷暴的双偏振和照明特征的全面认识做出贡献；它们如何以及为何与环境条件、风暴形态、地形和流出边界相关；最先进的区域气候和天气预报模型是否能够再现从观测中得出的冰雹积累特征。这项研究将增进我们对雷暴中大冰雹/霰石产生过程的理解，改进对引起自然灾害的极端事件的预测，并扩展现有能力以直接造福社会。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报和预报具有大量冰雹积累的事件，并为评估预报和区域气候模拟提供基础。冰雹对财产和农业造成损害，导致牲畜死亡和人员受伤，从而产生了巨大的经济影响。如果冰雹积累也能提供有用的信息，向公众发出可靠的警报并协助恶劣天气管理，那么这项研究将提供更好的见解。本科生和研究生将通过独立学习、实习、攻读博士学位等方式参与科学研究。论文。该项目将促进大气研究大学公司的大气研究和科学重大机会计划与科罗拉多大学夏季多元文化研究培训计划之间的合作，该计划旨在为科学、数学和工程领域代表性不足的本科生提供服务。

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: 2019-03
• 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: 2020-08
• 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: 2019-02
• 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