[MITgcm-support] error with "tmin,tmax" exceeds allowed range

[Angela Zalucha]

(It can also occur when you are working on a planet other that Earth that 
is say very hot :) )

    Angela




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Angela Zalucha, Ph.D.
Research Scientist
Search for Extraterrestrial Intelligence (SETI) Institute


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


http://www.seti.org/users/azalucha
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On Thu, 12 Dec 2013, Jody Klymak wrote:

> This happens because the model is going unstable (i.e. the CFL criteria is exceeded).  Reduce your timestep, coarsen your grid, and make sure your
> hfac is not too small. This will make small dz values near topography that can easily exceed CFL if you have strong vertical velocities in your
> problem.
> Cheers,  Jody
> 
> On Dec 12, 2013, at  10:49 AM, 李志远 <oceanlizy at 163.com> wrote:
> 
> From: lizhiyuan <oceanlizy at 163.com>
> To: mitgcm-support at mitgcm.org
> Subject: error with "tmin,tmax" exceeds allowed range 
> 
> 
> Hi, there;    I  use mitgcm to simulate the wind driven circulation in a semi-closed domain ,  I compile passed,but when run the model
> ,after some steps , errors occured :
>         SOLUTION IS HEADING OUT OF BOUNDS : tMin,tMax= -4.697E+04   6.872E+03
>             exceeds allowed range (monsolutionmaxrange=1.000E+03)
>       ending the run 
> my SIZE.h file is as below :    sNx=268,
>                                              sNy=338,
>                                              oLx=3,
>                                              oLy=3,
>                                              nSx=1,
>                                              nSy=1,
>                                              nPx=1,
>                                              nPy=1,
>                                              Nr=36,
> my data file :         
>                            viscAr  =1.E-3,
>                            viscAh=4.E5,
>                           diffKhT=1000,
>                            diffKrT=3.E-5,
>                            diffKhS=4.E2,
>                            diffKrS=3.E-5,
>                           rhoConst=1035.,
>                           rhoConstFresh=1000.,
>                           f0=1.e-4,
>                           no_slip_sides=.FALSE.,
>                           no_slip_bottom=.TRUE.,
>                           rigidLid=.FALSE.,
>                           implicitFreeSurface=.TRUE.,
>                           eosType = 'LINEAR',
>                          implicitDiffusion=.TRUE.,
>                           implicitviscosity=.TRUE.,
>                           hFacMin=0.1,
>                           readBinaryPrec=32,
>   I wonder why it always occur such errors that  the" tmin,tmax"  exceed the allowed range ,  the only two parameters related to
>  temperature  are "diffKhT ,diffKrT",  I think it is  the two parameters value set in the "data"file that caused such  errors.  should I
>  change the two values ?  what I should do to avoid such errors ?
> 
> many thanks!
> 
> 
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> 
>