[MITgcm-support] ABNORMAL END: S/R CALC_R_STAR

[Angela Marie Zalucha]

Zhaomin,

   That message usually occurs when your time step is too small.  Try 
lowering deltaT.  I interpret it as the model's way of telling me I've 
violated the CFL condition.

In the STDOUT file (in the MONITOR statistics section) you can check 
advcfl_uvel_max, advcfl_vvel_max, and advcfl_wvel_max.  I empirically find 
that the model tends to give this message if the first two are greater 
than about 0.5; 0.1 for the third one.

Another solution is to change the minimum thickness parameter hFacInf to a 
lower value (the default is 20%)

I use the atmospheric version of the model.

    Angela


On Fri, 22 Jul 2011, Wang, Zhaomin wrote:

> Hi,
>
> Does anyone know what can cause this error:
>
> ABNORMAL END: S/R CALC_R_STAR?
>
> Apparently, the error message was from calc_r_star.F that calculates new column thickness & scaling factor for r*.
>
> Thanks in advance.
>
> Zhaomin
> British Antarctic Survey
> High Cross, Madingley Road
> Cambridge, CB3 0ET
> UK
> Tel: +44(0)1223221488
> Fax: +44(0)1223221279
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Angela Zalucha, Ph.D.
Postdoctoral Associate
Department of Earth, Atmospheric,
   and Planetary Sciences
Massachusetts Institute of Technology

Office located at Southwest Research Institute
1050 Walnut Street, Suite 300
Boulder, CO 80302
USA
(720) 208-7211


http://web.mit.edu/azalucha/www/index.html
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