Dear Regcm users:

I know this problem has been posted previously and I had an idea at first of how
resolve it, but I have tried all the posible solutions and doesn't work. The
problem is that my program crashes after certain time period, usually it
happends with the start of a new day, the message I got is:

7, no. of points w/convection = 8
at day = 0.6243, ktau = 900 : 1st, 2nd time deriv of ps =
0.13017E-04 0.55921E-0
7, no. of points w/convection = 16
OUT-history written date = 2005030812.12500
BATS variables written at 2005030815 180.000000000000
Writing rad fields at ktau = 900 2005030815
Chem variables written 2005030815
at day = 0.6590, ktau = 950 : 1st, 2nd time deriv of ps =
0.23339E-04 0.57786E-0
7, no. of points w/convection = 10
at day = 0.6937, ktau = 1000 : 1st, 2nd time deriv of ps = NaN
NaN
, no. of points w/convection = 0
at day = 0.7285, ktau = 1050 : 1st, 2nd time deriv of ps = NaN
NaN
, no. of points w/convection = 0


I'm pretty sure I'm using the correct timestep, my horizontal resolution is 20
km, so the time parameters are:

$timeparam
radfrq = 30.,
abemh = 18.,
abatm = 120.,
dt = 60.,

I have done simulations with other resolutions 40, 60 km and they have succeed.
Am I missing an important point?

I really apreciate any help, thanks in advance





Carolina Cavazos Guerra
University College London
Department of Geography
Pearson Building, Gower Street
London, WC1E 6BT, UK
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