Dear Dr. Graziano,

I had this error while trying to build domain file

Opening /RegCM-4.3.5/GLOBEDAT/SURFACE/GTOPO_DEM_30s.nc
 NetCDF: Unknown file format
 mod_rdldtr.F90 :      139:NetCDF Error:          -51
Aborted (core dumped

I think my machine is having insufficient space for the netCDF data format
Memory:        3.7 GiB
Processor:    Intel Core i5-3320M CPU @2.60GHz X 4
OS type:    64-bit
Disk:        203.0 GB

In this case what will be your advice thank you

with regard

Julius Akinyoola