Search Results

You are looking at 1 - 4 of 4 items for :

  • Radiative transfer x
  • In Honor of Bach-Lien Hua: Ocean Scale Interactions x
  • All content x
Clear All
Audrey Delpech, Claire Ménesguen, Yves Morel, Leif N. Thomas, Frédéric Marin, Sophie Cravatte, and Sylvie Le Gentil

poorly understood. Different physical mechanisms have been proposed to explain their formation, relying on a cascade of mechanisms transferring energy from a deep energy source (generally generated through the propagation at depth of atmospheric variability or currents instabilities) to the mean jet-structured circulation (see Fig. 2 of Ménesguen et al. 2019 ). Earlier studies have shown that two-dimensional turbulence induces an inverse cascade, with energy transferred toward larger scales. On a

Restricted access
Yang Jiao and W. K. Dewar

the CUC. Accordingly, we argue the classical efficiency of CI appears to be relatively high compared to the value of 0.2 traditionally assigned to K–H instability and comparable to the higher values estimated in more recent high Reynolds number simulations. In fact, the CI efficiency as defined in the turbulence literature approaches the theoretical maximum efficiency for stratified flows. The implication of this is that CI is an effective means for directly transferring balanced energy to local

Full access
François Ascani, Eric Firing, Julian P. McCreary, Peter Brandt, and Richard J. Greatbatch

with the phase propagating mostly downward, consistent with observations. We then study DEC dynamics by analyzing the zonal kinetic energy budget in solution 1. We confirm the results of previous studies that DEIV is the original source for DEC, but we also discover that the EDJs supply energy to the EICs, suggesting that the nonlinear energy transfer involved in the formation of DEC is more complex than previously assumed. The paper is organized as follows: Section 2 provides a background for

Full access
Thomas Meunier, Claire Ménesguen, Richard Schopp, and Sylvie Le Gentil

incompressible Boussinesq equations are implemented on the f plane. In the present work, we use a flat bottom configuration with slippery conditions at the bottom, a free surface with implicit scheme ( Dukowicz and Smith 1994 ), and open radiative lateral boundary conditions. The advection scheme is a third-order upwind scheme for momentum and tracers that prevents spurious oscillations. Vertical momentum dissipation and tracer diffusivity are both modeled by a biharmonic operator with a coefficient of 1

Full access