[MITgcm-support] Re: routines to set geostrophically balanced initial conditions

[q li]

This setting seems to remove ageostrophic motion in every step. Any further setting for getting geostrophic background in the first steps so that it only works for initial condition?

Li

MomStepping=.TRUE.,
useCoriolis=.TRUE.,
MomAdvection=.FALSE.,
MomViscosity=.FALSE.,




________________________________
From: q li <qliuri at yahoo.com>
To: mitgcm-support at mitgcm.org
Sent: Friday, August 28, 2009 12:57:32 PM
Subject: Re: [MITgcm-support] Re: routines to set geostrophically balanced initial conditions


Nico,

What do these 4 options do in the model, especially MomStepping? In the beginning, do they use iteration or something else to get rid of ageostrophic movement?

Li




________________________________
From: Nico Wienders <wienders at ocean.fsu.edu>
To: mitgcm-support at mitgcm.org
Sent: Thursday, August 27, 2009 4:30:50 PM
Subject: Re: [MITgcm-support] Re: routines to set geostrophically balanced initial conditions


On Aug 27, 2009, at 12:58 PM, Georgy Manucharyan wrote:

> Hello,
>  Are there any routines that could properly set geostrophically balanced initial conditions ( from a given density field calculate U,V,Eta ) ?  I made it myself but initial conditions are not in exact balance, and I'm getting ageostrophic flow.
> Thanks in advance for help,
> Georgy.

I just did that recently, thanks to JMC and CNH, by setting

MomStepping=.TRUE.,
useCoriolis=.TRUE.,
MomAdvection=.FALSE.,
MomViscosity=.FALSE.,

in my data file. This way pretty much only geostrophy is left. nw















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