Effects of Mesoscale Thermal Forcing in a Shear Flow

对风暴系统的基本了解，因此， 改进预测取决于对许多方面的知识的进步。 相互作用的气象现象 本研究 主要研究者建议研究以下因素的影响 大气热力强迫在气流状态下， “临界水平”。 临界水平是指 环境风的速度与传播速度一致 大气扰动。 以前的工作表明， 临界水平可以在触发和/或 维持对流。 主要研究者将使用两种理论 调查和数值模拟研究的关系 热力强迫和大气流动之间的关系， 水平以及这些如何与形成和维持 两个不同的大气风暴系统--中纬度飑线 东海岸冬季气旋。 //

Fundamental understanding of storm systems and, hence, improved predictions depend upon advances in knowledge of many interacting meteorological phenomena. In this study, the Principal Investigator proposes to investigate the effects of atmospheric thermal forcing in flow regimes that posses a "critical level". A critical level is the height at which the velocity of the ambient wind coincides with the propagation speed of atmospheric disturbances. Previous work has shown that critical levels can play an important role in triggering and/or maintaining convection. The Principal Investigator will use both theoretical investigations and numerical modelling to study the relationship between thermal forcing and atmospheric flows with critical levels and how these relate to the formation and maintenance of two diverse atmospheric storm systems -- mid-latitude squall lines and east coast wintertime cyclones. //