[MITgcm-support] [Fwd: RI for mitgcm]

Dimitris Menemenlis menemenlis at jpl.nasa.gov
Mon Aug 14 12:47:32 EDT 2006

Hi David, I am copying your e-mail to MITgcm support.  I suspect (but have not 
checked) that the diagnostic you are referring to

  8 |RI | 15 |SM LL |non-dimensional |Richardson Number (non-dimensional)

is probably only available for the atmosphere and for atmospheric package.  Two 
types of Richardson numbers, surface-bulk and gradient-shear, are computed by 
pkg/kpp, but as far as I am aware and last I checked, they had not yet been 
included in diagnostics output.  One option for you, if you are satisfied with 
the KPP computation of Ri, would be to add these to available diagnostics list. 
    See pkg/kpp/kpp_diagnostics_init.F, pkg/kpp/kpp_do_diags.F, and kpp_routines 
for examples on how to do this.


-------- Original Message --------
Subject: RI for mitgcm
Date: Mon, 14 Aug 2006 10:50:45 -0500
From: David Ullman <ullman at wisc.edu>
To: menemenlis at jpl.nasa.gov

Hello Dr. Menemenlis,
I am working with Galen McKinley at the University of Wisconsin on a
North Atlantic setup for the mitgcm model.  I am trying to figure out
how to output the Richardson Number as a diagnostic.  I have the
diagnostic package working and outputting variables of my choice, but
RI is not available to me for some reason.  I searched the MITgcm
webpage and came across an email correspondence with your name/email
which showed a printout of your available_diagnostics.log which
included RI (http://mitgcm.org/pipermail/mitgcm-support/2005-April/
002978.html).  My available_diagnostics.log does not have RI, and I
am wondering if there is a switch that I need to turn on in order to
make it available?  Any assistance you can provide would be much

Thank you,

David Ullman
Graduate Student
Atmospheric and Oceanic Sciences
University of Wisconsin-Madison
ullman at wisc.edu

Dimitris Menemenlis <menemenlis at jpl.nasa.gov>
Jet Propulsion Lab, California Institute of Technology
MS 300-323, 4800 Oak Grove Dr, Pasadena CA 91109-8099
tel: 818-354-1656;  fax: 818-393-6720

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