Mesoscale Convective Systems and the Atmospheric Boundary Layer

9313716约翰逊组织的雷暴集合，被称为中尺度对流系统(MCS)，已被确定为春季、夏季和秋季热带和中纬度地区大部分降雨的创造者。在国家科学基金会先前的支持下，首席调查员利用了以前举行的实地实验的数据集，以进一步了解MCS及其与大气边界层的相互作用。他将使用数值模型和观测案例研究来继续这些研究。首席调查员将侧重于启动、维持和调节中尺度对流的过程，以及对流和大气边界层之间的耦合。需要研究的具体气象现象包括尾迹低、中层中尺度涡旋和山区及其附近的热量/水汽收支。如果成功，这项研究将导致对MCSs的更好理解，这可能会导致对降雨时间、地点、数量以及恶劣天气的更好预测。***

9313716 Johnson Organized collections of thunderstorms, known as mesoscale convective systems (MCSs), have been identified as producers of most of the rainfall in the tropics and mid-latitudes during the Spring, Summer and Fall. Under prior NSF support, the Principal Investigator has exploited data sets from previously held field experiments to further understanding of MCSs and their interactions with the atmospheric boundary layer. He will continue these investigations using both numerical models and observational case studies. The Principal Investigator will focus on processes which initiate, maintain and modulate mesoscale convection as well as the coupling between convection and the atmospheric boundary layer. Specific meteorological phenomena to be studied include wake lows, mid-level mesoscale vortices and heat/moisture budgets in and near mountainous terrain. If successful, this research will lead to better understanding of MCSs which may lead to better predictions of timing, location and amount of rainfall as well as severe weather. ***