Potential Vorticity Mixing

9529824杨通过构造运动方程解的流函数，发展了对位涡混合和均匀化的机械理解，其中粒子轨迹对初始条件具有敏感的依赖性。主要目的是表明，临界层吸收的Rossby波辐射的弯曲边界流导致不可逆的变形的位涡和位涡均匀化的侧翼再循环环流。 本研究的另一个目的是研究纬向流中的位涡，特别是不稳定波的非线性平衡过程中的边缘稳定性和位涡演化。

9529824 Young A mechanistic understanding of potential vorticity mixing and homogenization will be developed by constructing streamfunctions that are solutions of the equations of motion, and in which particle trajectories exhibit sensitive dependence on ilitial conditions. The main objective is to show that critical layer absorption of Rossby waves radiated by meandering boundary currents leads to irreversible deformation of potential vorticity and the potential vorticity homogenization of the flanking recirculating gyres. Another objective of this study is to examine potential vorticity in zonal flows, and in particular the marginal stability and potential vorticity evolution during the nonlinear equilibration of unstable waves.