[MITgcm-support] rhoConst and rhoNil

[Martin Losch]

Andy,
as far as I remember, rhoNil concerns only the equation of state (and 
therein only the linear EOS), whereas rhoConst is the constant 
reference density that the momentum equations are divided by. changing 
rhoConst should not change the result (except for round off errors), 
whereas changing rhoNil will.

Martin
On Jun 14, 2005, at 4:58 PM, Andrew Eichmann wrote:

>
> Anybody care to explain the relationship between rhoConst and rhoNil?
> I understand rhoNil to be the reference density, presumably to
> calculate/output the density anomaly....  This is for purposes of
> documenting the rotating tank example, and it's not discussed in the
> manual nor in any comments I could find.
>
> Thanks,
> -- 
> Andrew Eichmann
> MIT-PAOC
> Rm 54-1623
> 77 Massachusetts Ave.
> Cambridge, MA 02139
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