[Wrf-users] Error in boundary condition specification

Eric Altshuler ela at cola.iges.org
Thu May 19 14:13:49 MDT 2011

Hi Nicole,

A domain has to get its lateral boundary conditions from either the forcing dataset (e.g. GFS, NAM, ECMWF etc.) or its parent domain. If the domain is the "coarse" domain (i.e. has the lowest resolution), it is numbered as domain 1 and gets its lateral boundary conditions from the forcing dataset. Your namelist.input should have

specified = .true., .false., .false., [.false., ...]

Your error message pertains to domain 2. If it's a nest (which it most likely is, since there is usually only one coarse domain), your namelist.input should indicate this as follows:

nested = .false., .true., .true., [.true., ...]

Your problem is that for domain 2, 'nested' is .false. in your namelist. Change the setting of 'nested' to .true. for all nest domains.

Best regards,

Eric L. Altshuler
Assistant Research Scientist
Center for Ocean-Land-Atmosphere Studies
4041 Powder Mill Road, Suite 302
Calverton, MD 20705-3106

E-mail: ela at cola.iges.org
Phone: (301) 902-1257
Fax: (301) 595-9793

----- Original Message -----
From: "Nicole Schiffer" <nschiff2 at atmos.uiuc.edu>
To: wrf-users at ucar.edu
Sent: Thursday, May 19, 2011 11:37:19 AM
Subject: [Wrf-users] Error in boundary condition specification

I am trying to run the tutorial case that is one-way nesting using ndown. Running real.exe gives me the following error in three of the four rsl.out files: 

Domain 2: Current date being processed: 2005-08-28_00:00:00.0000, which is loop # 1 out of 5 
configflags%julyr, %julday, %gmt: 2005 240 0.000000 
metgrid input_wrf.F first_date_input = 2005-08-28_00:00:00 
metgrid input_wrf.F first_date_nml = 2005-08-28_00:00:00 
d02 2005-08-28_00:00:00 Timing for input 0 s. 
d02 2005-08-28_00:00:00 flag_soil_layers read from met_em file is 1 
*** Error in boundary condition specification 
boundary conditions at xs 0 
boundary conditions at xe 0 
boundary conditions at ys 0 
boundary conditions at ye 0 
boundary conditions logicals are 
periodic_x F 
periodic_y F 
symmetric_xs F 
symmetric_xe F 
symmetric_ys F 
symmetric_ye F 
open_xs F 
open_xe F 
open_ys F 
open_ye F 
polar F 
nested F 
specified F 
-------------- FATAL CALLED --------------- 
*** Error in boundary condition specification 
Where should I look to solve this problem? 

*     Nicole Schiffer
*     Graduate Research Fellow (Dept. of Energy)
*     Department of Atmospheric Sciences
*     University of Illinois, Urbana-Champaign
*     Email: nschiff2 [at] illinois [dot] edu
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