[RegCNET] Sigma Levels

[Neil Davis]

I am working with RegCM over tropical Africa and want to adjust the 
sigma levels in the 23 level setting so that there are more levels below 
3000 m than in its current set up.  I have been able to run the model 
with the default 23 sigma levels but when I try to change it to 
increased levels in the lower atmosphere I get a floating point 
exception.  I was wondering if it is at all possible to change the sigma 
levels from the default, and if it is possible what could be causing the 
floating point exception.  I can post my adjusted sigma levels if that 
will help. 

Neil Davis
NCSU climate modeling lab