[RegCNET] Nan error during model run

[Satyaban Bishoyi Ratna]

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

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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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