Dear all,
I am sorry to take your time, but I encountered a SURFACE data problem when I run the new RegCM4.1 model. The problem occurs when I do this step: 

 ../Bin/terrain regcm.in

  This is Terrain part of RegCM package version 4
   SVN Revision: 宸插鍑?compiled at: data : May 18 2011  time: 08:29:10

 : this run start at  : Wed May 18 08:50:11 2011
 : it is submitted by : root
 : it is running on   : localhost.localdomain
 : in directory       : /usr/RegCM-4.1/200604
                     
 
 Doing Domain Setup with following parameters
 
 ntypec =           10
 iy     =           60
 jx     =          100
 ds     =    60.0000000000000    
 clat   =    40.0000000000000    
 clon   =    100.000000000000    
 iproj  = LAMCON
 
 Grid setup done
 Geo mapping done
 Calculated large extrema:
          MINLAT =    19.0000000000000    
          MAXLAT =    57.0000000000000    
          MINLON =    56.0000000000000    
          MAXLON =    145.000000000000    
 Determined Grid coordinate range
 Opening ./DATA/SURFACE/GTOPO_DEM_30s.nc
 NetCDF library error.
 No such file or directory

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Could you help me? I am grateful for any help.Thanks very much.

Xingtao Su
PLA University of Sci. and Tech.,Nanjing,China