Yes,

You shoud consider dt =3 * dx, but also abatm = 3 * dt or 4 * dt. If it crashes again, decrease dt, set again abatm (3 or 4 times dt) and proceed. I remember that i used 25 km of resolution in some previous runs. My dt was 60 and abatm 240.

Hope this will help. Regards !

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M. Bamba SYLLA
Laboratoire de Physique de l'Atmosphère et de l'Océan (LPAO-SF)
Ecole Supérieure Polytechnique (ESP)
Université Cheikh Anta Diop (UCAD)
Dakar-Fann Sénégal
Visiting Scientist at CRE Casaccia ENEA
Roma - Italia
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----- Message d'origine ----
De : ashu mamgain <ashumam@gmail.com>
À : regcnet@lists.ictp.it
Envoyé le : Lundi, 2 Juin 2008, 9h24mn 25s
Objet : [RegCNET] RegCM3 error :model crashes

Dear all

I am trying to run RegCM3 on IBM machine for the resolution 25km or less.

and the model crashes during the simulation (even for the first day)

even for the minimum time step, that is dt=1

domain parameters are

iy=154

1x=150
if anybody can help me in this regards

kindly reply me

--
With Best Wishes
*******************************************
Ms. Ashu Mamgain
Project Associate/Research Fellow
CAS, IITD
Email: ashumam@gmail.com
ash_mam2001@yahoo.com