[MITgcm-support] [mitgcm-support] On the horizontal momentum budget in the MITgcm

[Bertrand Louis Rene Delorme]

Hi Yi Liu,

Not sure that it will help but here are a few points to check:

-          If you don’t use the CD-Scheme, then Um_Advec already contains the Coriolis term.

-          If you use implicit vertical viscosity, that needs to be added (using the flux diagnostic VISrI_Um).

-          The AB effect – who should be small - should be added with the diagnostic AB_gU.

Best,
Bertrand


De : MITgcm-support <mitgcm-support-bounces at mitgcm.org> au nom de liuyi315 <liuyi315 at mails.ucas.ac.cn>
Répondre à : "mitgcm-support at mitgcm.org" <mitgcm-support at mitgcm.org>
Date : lundi 25 décembre 2017 à 1:54 PM
À : mitgcm-support <mitgcm-support at mitgcm.org>
Objet : [MITgcm-support] [mitgcm-support] On the horizontal momentum budget in the MITgcm

Dear all,

Now I am using MITgcm to study the effects of tidal mixing in the Indonesian Seas. I have encountered a problem. I am trying to do the momentum budget analysis using the following equation:
“TOTUTEND/86400=-g*d Eta/dx+Um_Diss+Um_Advec+Um_Cori+Um_dPHdx+Um_Ext"
However, the left term could not balance the right and the difference between them is very large. I am not sure whether I have mistakenly ignored some terms or not.
Could anyone give me some suggestions? Thanks very much.

Best,
Yi Liu
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