Dynamics of Low-frequency Variability and the General Circulation of the Atmosphere

本项目将采用简化模式（正压涡度方程、浅水方程、双层和多层准地转模式），结合大气环流模式，更好地了解中纬度地区大气低频变率的机制。讨论了涡旋反馈、与副热带急流的相互作用、对流层-平流层相互作用以及与底层海洋的相互作用的重要性。这些都是长期存在的问题，对当前关注的区域气候变率很重要。如果成功，预计该项目将为冷空气爆发事件提供有用的预报指导，有利于了解中长期气候变化。这项工作将支持一名研究生，并部分支持一名博士后，研究的各个方面将纳入首席研究员的研究生课程。研究结果将通过国际科学期刊和科学会议的出版物进行传播。

This project will use simplified models (barotropic vorticity equation, shallow-water equation, two-layer and multi-layer quasi-geostrophic), together with an atmospheric general circulation model, to better understand the mechanisms of atmospheric low-frequency variability in midlatitudes. It addresses the importance of eddy-feedback, interactions with the subtropical jet, tropospheric-stratospheric interaction, as well as interactions with the underlying ocean. These are long-standing problems that are important to the current concerns of regional climate variability.If successful, this project is expected to provide useful forecast guidance for cold air outbreak events, with benefits in the area of understanding medium to long-term climate variability. The work will support a graduate student and partially support a postdoc, and aspects of the research will be integrated into the graduate courses of the principal investigator. The results will be disseminated via publications in international scientific journals and at scientific conferences.