Papers by Sonaljit Mukherjee
We study the production and dissipation of the eddy kinetic energy (EKE) in a submesoscale eddy f... more We study the production and dissipation of the eddy kinetic energy (EKE) in a submesoscale eddy field forced with downfront winds using the Process Study Ocean Model (PSOM) with a horizontal grid resolution of 0.5 km. We simulate an idealized 100 m deep mixed-layer front initially in geostrophic balance with a jet in a domain that permits eddies within a range of O(1 km-100 km). The vertical eddy viscosities and the dissipation are parameterized using four different subgrid vertical mixing parameterizations: the k − ϵ, the KPP, and two different constant eddy viscosity and diffusivity profiles with a magnitude of O(10 −2 m 2 s −1 ) in the mixed layer. Our study shows that strong vertical eddy viscosities near the surface reduce the parameterized dissipation, whereas strong vertical eddy diffusivities reduce the lateral buoyancy gradients and consequently the rate of restratification by mixed-layer instabilities (MLI).
Bulletin of the American Meteorological Society, 2015
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Papers by Sonaljit Mukherjee