Numerical Simulation and Analysis of Severe Storms and Mesoscale Convective Systems

由于潜在的巨大经济影响以及公共安全问题，大气中尺度对流系统（MCS）的研究是一个高度优先的研究课题。 根据该奖项，首席研究员将开展涉及与 MCS 和其他对流风暴相关的气象现象的多项研究任务： o 对 MCS 启动和发展的环境进行详细的观测分析，重点关注可预测性。 o 进行模拟，研究 MCS 发展对数值模型中初始对流系综配置的敏感性。 o 检查前侧下降气流和后侧下降气流冷池变率对中气旋和近地表的影响o 使用机载多普勒雷达模拟和诊断在弓回波和中尺度对流涡实验 (BAMEX) 中观察到的 derecho 情况（高直线风）。这项研究将有助于从根本上理解强雷暴和 MCS 的行为和演化。 该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有助于更好地理解，从而更好地短期预测与强风暴和 MCS 相关的天气现象，包括龙卷风、强降雨和强风。

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.