Modeling and Analysis of Convective Storms

首席研究员和他的研究人员将继续研究对流风暴和相关恶劣天气现象的分析和数值模拟。该研究旨在进一步了解雷暴向中尺度对流系统转变的过程，并定量分析位涡在中尺度对流系统发生和演变中的作用。研究人员还将调查造成严重直线风和龙卷风形成和维持的物理因素。该研究结合了交互式嵌套网格模型的使用，即科罗拉多州立大学（CSU）区域大气模拟系统（RAMS）和高分辨率观测系统收集的数据分析，包括CSU- chill雷达，一个国家研究设施。模拟和观测之间的联系提供了通过数值模拟对假设的反复检验、对模式的验证和改进以及对风暴的客观分析文件。计划工作的另一个重要因素在于RAMS物理和数值的新发展。* * *

ATM-9420045 The Principal Investigator and his research staff will continue their research on the analysis and numerical simulation of convective storms and associated severe weather phenomena. The research is aimed at furthering understanding of the processes involved in the transformation of thunderstorms to mesoscale convective systems (MCSs) and the quantification of the role of potential vorticity on the genesis and evolution of MCSs. The researchers also will investigate the physical factors responsible for the formation and maintenance of severe straight line winds and tornadoes. The research combines the use of an interactive, nested-grid model, viz. Colorado State University s (CSU) Regional Atmospheric Modeling System (RAMS) with analysis of data gathered by high- resolution observational systems, including the CSU-CHILL radar, a national research facility. The linkage between modeling and observations provides iterative testing of hypotheses by numerical simulations, validation and refinement mf the models and objectively analyzed documentation of storms. An additional important element of the planned work lies in new developments in the RAMS' physics and numerics. ***