[MITgcm-support] Energy conversion diagnostics for ECCO-type LLC/CS grids

[Christopher Pitt Wolfe]

Hi All:

Does anyone know if there’s a “standard” way to calculate baroclinic and barotropic energy conversion terms for models like ECCO which uses lat/lon/cap or cubed-sphere grids? I’m particularly interested in the forms of these terms referred to as T2 and T4 by Beckmann et al. (JGR 1994, doi: 10.1029/94JC01654) where T2 is the horizontal eddy density flux dotted into the mean density gradient and T4 is the horizontal eddy momentum flux contracted with the mean rate-of-strain tensor. I’ve been hacking together something on my own, but I keep getting tripped up by the changes in the orientation of the basis vectors as you move between grid faces. Since the CS grid has been around for a while, I was hoping someone had already figured out how to do it.

If anyone has any tips, please let me know.
Thanks,
Christopher



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Christopher L. P. Wolfe
Assistant Professor
School of Marine and Atmospheric Sciences
Stony Brook University
christopher.wolfe at stonybrook.edu <mailto:christopher.wolfe at stonybrook.edu>             631-632-3152
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