[RegCNET] Nan error during model run

Abdou Abdellatif Esawy Awwad aabdou at ictp.it
Sun Jan 24 06:09:12 CET 2010


Hi
 Check your ../Input/ICBC*  files by GraDS to be sure that it fully cover
the period mentioned in the ../PreProc/Terrain/domain.pram
                                (idate1 =??????, idate2=........)
regards

>
> Dear RegCNETers,
> I am conducting a RegCM run (3 months simulation). It is going fine but
> getting the NaN error during the last six hours of model run. If I try a
> restart run with the last 'SAV' file, this too encounters 'NaN' error. In
> general, NaN error occurs with inappropriate in the time step issue (dt in
> regcm.in) and so I have attempted with several changes in the time step
> (dt) but there is no success.
> Can you please suggest what could be the probable error.
> My Namelist file in the simulation with 30 km resolution is as follows.
>  radfrq  =    30.,
>  abemh   =    18.,
>  abatm   =   90.,
>  dt      =   30.,
>  I tried changes in (dt, abatm) as (30,90), (30,180), (30, 300), (30,600)
> and also (60,180)etc.
>
> Thanks.
> Regards
> Satyaban
>
> -------------------------------------------------------------------------------
> Dr. Satyaban Bishoyi Ratna
> Computational Atmospheric Sciences Team
> Scientific & Engineering Computing Group
> Centre for Development of Advanced Computing (C-DAC)
> Pune University Campus, Ganeshkhind
> Pune - 411 007, Maharashtra, India
> E-mail: satyabanb at cdac.in
> Tel (O): +91-020-2570 4226,  (Cell): +91-094223 56326
> --------------------------------------------------------------------------------_______________________________________________
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All the best
==================================
Dr. Abdellatif Esawy Awwad Abdou
Regular Associate of ICTP,
Prof. Assistant
Center of Excellence for Climate Change Research (CECCR)
King Abdulaziz University
P.O. Box 80208 Jeddah 21589
Kingdome of Saudi Arabia
E-mail: aeabdu at kau.edu.sa or
        aabdou at ictp.it
        drabdellatifesawy at gmail.com
        abdellatif_abdou at yahoo.com
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Tel       : (+966) 2 695 2369
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