Diagnostic and Numerical Studies of Precursor Disturbances in Extratropical Baroclinic Development

凯瑟 这个项目涉及选定方面的调查外热带斜压波制度的动力学，所有这些都将有助于更好地了解外热带气旋生成的过程。 该研究将包括诊断和数值模拟研究。 将进行的三项主要活动是：（1）分析高层急流条纹和锋区附近的非地转环流，（2）研究高层气旋生成前兆的性质和涡旋动力学的适用性，（3）利用一系列数值模式研究大气急流条纹的动力学和演变。 特别是，首席研究员对喷流动力学的看法与传统观点截然不同，如果证明是正确的，将从根本上改变大气科学界对喷流的理解。 这项研究对于提高对中纬度风暴发展的认识具有重要意义。 ***

Keyser This project involves investigations of selected aspects of the dynamics of extratropical baroclinic wave regimes, all of which will contribute to a better understanding of the process of extratropical cyclogenesis. The research will consist of both diagnostic and numerical modeling studies. Three principal activities to be undertaken are (1) analyses of ageostrophic circulations in the vicinity of upper level jet streaks and frontal zones, (2) a study of the nature of upper level precursors of cyclogenesis and the applicability of vortex dynamics, and (3) a study of the dynamics and evolution of atmospheric jet streaks using a hierarchy of numerical models. The principal investigator's view of jet streak dynamics, in particular, is quite different from the conventional view and, if shown to be correct, would radically change the atmospheric sciences community's understanding of jets. This research is important in improving understanding of the development of midlatitude storms. ***