Dear All

When i try to run icbc for a double nested regcm run, i encounter with a problem.
 The Error is as fallowing
 Error: the RCM surface is above the GCM
 model top at i,j=           1           1
 This might reasonably happen if you have a
 very tall mountain in your domain. Setting 
 ptop to a smaller value could help.
 Otherwise, this indicates a bug somewhere..

First of all, decreasing the ptop value doesn't work. on the other hand, changing the "clat"and "clon" works well. But i dont want to change the centre of my location. So; here my question. what is the reason of that error,and how can fix that without changing the domain.

Thanks,

Cihat Kurt, MS student

kurt_cihat@hotmail.com/ cihatkurt25@gmail.com