[RegCNET] NaN ERROR after time step reduction

Michal Belda michal.belda at e-invent.eu
Wed Feb 24 10:44:26 CET 2010


Hello,

you may want to try reducing the time step again, but from your previous 
email it looks like the problem may be rather in the ICBC files. This 
happened to me a couple of times when the downloaded ICBC files had been 
corrupted during ftp download.

My suggestion is to first take a look at both simulations and if the 
error appeared in the same time step (in your case 2076091418), then 
there's probably some error in the ICBC file. To check this, you simply 
display the ICBC file in GrADS and you should see in the corresponding 
time step a possible problem in one of the fields (or all of them)..

Good luck.

Rajalakshmi Dhandapani wrote:
> Dear All,
> 
>            For NaN error, it is suggested to reduce the time step . As 
> our Domain is of 25km resolution we used "dt = 60" & "abatm = 120"  at 
> first and after NaN the time step was  reduced to "dt=30" & "abatm=90" 
> but still the same error persists.

-- 
Michal Belda
Tel: 605 774 875
http://www.e-websolutions.eu



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