Numerical Simulation and Analysis of Severe Storms and Mesoscale Convective Systems

强风暴和中尺度对流系统的数值模拟与分析

• 批准号: 0324324
• 负责人: William Cotton
• 金额: $ 61.36万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-11-01 至 2007-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0324324&HistoricalAwards=false
• 关键词: Numerical; Simulation; Analysis; Severe; Storms

Due to potential large economic impact as well as public safety issues, the study of atmospheric mesoscale convective systems (MCS) is a high priority topic of research. Under this award, the Principal Investigator will pursue several research tasks that involve meteorological phenomena associated with MCSs and other convective storms: o Perform a detailed observational analysis of the environment in which MCSs initiate and develop with a focus on predictability.o Perform simulations to investigate the sensitivity of MCS development to initial convective ensemble configuration in numerical models.o Examine the impacts of forward flank downdraft and rear flank downdraft cold-pool variability on mesocyclones and near-surface tornado-like vorticity in simulated supercell tornado-producing storms.o Simulate and diagnosis, using airborne Doppler radar, derecho cases (high straight line winds) observed in the Bow Echo and Mesoscale Convective Vortex Experiment (BAMEX).This research will contribute to fundamental understanding of the behavior and evolution of severe thunderstorms and MCSs. The methodological approach involves a combination of numerical simulations and diagnostic studies.Successful completion of this research will lead to better understanding which may result in better short range prediction of weather phenomena associated with severe storms and MCSs, including tornadoes, heavy rainfall, and severe winds.

由于潜在的经济影响以及公共安全问题，大气中尺度对流系统（MCS）的研究是研究的高优先事项。 根据该奖项，首席研究者将执行几项研究任务，涉及与MCS和其他对流风暴相关的气象现象：在模拟的超级电池龙卷风产生风暴中，中clones和近地表龙卷风的变异性可变性。雷暴和MCS。 方法论方法涉及数值模拟和诊断研究的结合。成功完成这项研究将带来更好的理解，这可能会导致对与严重风暴和MCS相关的天气现象的更短期预测，包括龙卷风，大降雨，降雨量和强风。