[MITgcm-support] KE diagnostics

[Jean-Michel Campin]

Hi Marco,

When using pkg/mon_fluxform (= the default), KE that the model computes and output
from pkg/diagnostics (diagnostics name: 'momKE   ') comes from S/R MOM_CALC_KE 
and uses the KEscheme=2 discretisation:
C            1  /  ------------I    -----------J \
C      KE = --- |  U^2 * hFacW   +  V^2 * hFacW  | / hFacC
C            2  \                                /
Note that, as discussed in a recent post to this list
( http://mitgcm.org/pipermail/mitgcm-support/2014-November/009569.html )
even when using non-Hydrostatic, the W contribution is not part of the 'momKE   ' 
diagnostics (but included in the "MONITOR" ke output).

The other KE discretisation options (KEscheme) are only available when using pkg/mom_vecinv
 (setting: vectorInvariantMomentum=TRUE ).

Cheers,
Jean-Michel

On Fri, Jan 23, 2015 at 02:20:06PM +0100, marco reale wrote:
> Dear MITGCM users,
> 
> I’m using the MITGCM in Hydrostatic configuration, implicit linear free surface and flux form momentum equation: I would be curious to reconstruct the Kinetic Energy using the Uvel and Vvel from the diagnostics of the model instead using directly the KE from the diagnostics.
> 
> I had a look on the subroutine mom_calc_ke.f and I saw that the model has several ways to do that: in general the diagnostics momKE in the Hydrostatic case from the model doesn’t include the vertical component of velocity.Right?
> 
> So where I can find how the model did the computations of KE in case of Hydrostatic configuration?
> 
> Cheers
> 
> Marco
> 
> 
> 
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