Dear all,

I am running RegCM4.7 in non-hydrostatic mode with CLM4.5 enabled at 50km resolution. I have configured for Aerosol experiments. I tried running the model for new microphysics scheme (Nogherotto/Tompkins) but everytime irrespetive of how much lesser the time step I am getting the following error.

"urban net longwave radiation error: no convergence" 

Thanks in advance

best regards 
umakanth