[MITgcm-support] Vector Invariant momentum equations

[Sergio Jaramillo]

A short question. If I am using a flat polar coordinate system should I 
use the vector invariant form of the momentum equations?, i.e., 
vectorInvariantMomentum =.TRUE.

Thanks for your help,

Sergio Jaramillo
University of British Columbia

mitgcm-support-request at mitgcm.org wrote:

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>   1. RE: [Fwd: RE: [MITgcm-support] grid-scale noise in 1/4-deg
>      model] (Dimitris Menemenlis)
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>----------------------------------------------------------------------
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>Message: 1
>Date: Thu, 04 Dec 2003 09:23:09 -0800
>From: Dimitris Menemenlis <menemenlis at jpl.nasa.gov>
>Subject: RE: [Fwd: RE: [MITgcm-support] grid-scale noise in 1/4-deg
>	model]
>To: mitgcm <mitgcm-support at mitgcm.org>
>Cc: Tong Lee <tlee at pacific.jpl.nasa.gov>,	Ichiro Fukumori
>	<if at pacific.jpl.nasa.gov>
>Message-ID: <1070558589.28269.499.camel at nireas.jpl.nasa.gov>
>Content-Type: text/plain; charset="us-ascii"
>
>Alistair, thanks for the tip.
>
>With COSINEMETH_III and ISOTROPIC_COS_SCALING properly set, I can
>increase biharmonic friction and viscosity by a factor of 30.  Results
>in the attached figure compare Kuroshio and West African coast regions
>for 1e10 and for 2e11 m^4/s.
>
>To do this however I have to use cosPower=4 not cosPower=2.  Was that a
>typo in your message yesterday?
>
>For reference, here is table of experiments.  The grid is isotropic,
>80S-80N, 1/4-deg grid-spacing at the Equator.  Time step is 480 s.
>
>cosPower     visca4,diffk4      result
>====================================
>2              5e10                  OK
>2              1e11                  bombs
>3              1e11                  OK
>3              2e11                  bombs
>4              3e11                  OK
>4              4e11                  bombs
>
>Please confirm that using cosPower=4 for an isotropic grid is OK.
>
>D.
>
>  
>