Submesoscale Instability in idealized Mesoscale eddies

Changming Dong1, Xingliang Jiang2, Wenjin Sun1 and Haili Wang1, (1)Nanjing University of Information Science and Technology, Nanjing, China, (2)University of California Los Angeles, JIFRESSE, Los Angeles, United States
Cyclostrophic and geostrophic balanced mesoscale eddies are subject to submesoscale instability. A high-resolution numerical model is developed to investigate the instability, which reveals how balanced mesoscale eddies are dissipated. Energetics analysis shows multiple instabilities (such as, symmetric, baroclinic instabilities ) could take place in eddy decaying processes. It is also demonstrated that the high spatial resolution is required to reveal the decaying processes.