[RegCNET] query about the SRF and ATM output

[d d]

dear RegCM users

I am using a quadcore IBM 64 bit machine and try to run RegCM with following
configuration

domain.param

      parameter(iproj='NORMER')
      parameter(iy=90)
      parameter(jx=90)
      parameter(kz=18)
      parameter(ds=50.0)

regcm.in
     radfrq  =    30.,
    abemh   =    18.,
    abatm   =   450.,
    dt      =   150.,
for the year 1997 and 1998
using NNRP1 dataset
upto 3 months starting from Jan 1997 to March 1997 the model output was ok
but since 4th month the model shows one error that "entire grid is
undefined"
I tried to reduce the grid resolution to 90km

regcm.in
     radfrq  =    30.,
    abemh   =    18.,
    abatm   =   900.,
    dt      =   225.,
but still the same outcome

what might be the possible reason

please kindly help

best regards

Dwijendra
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