[MITgcm-support] 3D forcing for the momentum equations

[Burns, Paul]

Hi Igor,

Yes, you can use (possibly with a little modification) the MITgcm RBCS scheme.  The scheme gives the user the ability to force any or all points in the domain.  This is a good place to start:
https://mitgcm.readthedocs.io/en/latest/phys_pkgs/rbcs.html
8.3.2. RBCS Package — MITgcm checkpoint68f-7-g30a27da28 documentation - Read the Docs<https://mitgcm.readthedocs.io/en/latest/phys_pkgs/rbcs.html>
8.3.2. RBCS Package¶ 8.3.2.1. Introduction¶. pkg/rbcs provides the flexibility to relax fields (temperature, salinity, ptracers, horizontal velocities) in any 3-D location, thus can be used to implement a sponge layer, or a “source” anywhere in the domain, among other uses.. For a field (\(T\)) at every grid point the tendency is modified so that:
mitgcm.readthedocs.io



All the best,
Paul




Dr Paul Burns MInstP FRMetS

Research Fellow

Geophysical and Astrophysical Fluid Dynamics Group

Department of Mathematics

Harrison Building

University of Exeter

________________________________
From: MITgcm-support <mitgcm-support-bounces at mitgcm.org> on behalf of Shevchenko, Igor <i.shevchenko at imperial.ac.uk>
Sent: 17 February 2022 14:26
To: mitgcm-support at mitgcm.org <mitgcm-support at mitgcm.org>
Subject: [MITgcm-support] 3D forcing for the momentum equations

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Dear MITgcm Community,

Does MITgcm provide a mechanism to inject a 3D forcing field (not just a surface one) into the momentum equations?

Best regards,
Igor
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