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wrong grid for LM external parameters

Added by Edoardo Bucchignani about 6 years ago

Dear all,
I am trying to run Int2lm over north Italy at resolution of about 1km (0.009°). I have generated an external parameter file covering a quite larger domain, but I obtain the following error message:

 OPEN: ncdf-file: /u1/bued185/RUN_URBAN/int2lm/const/domain2016050611155.nc
   external data file        namelist input
 ie_ext              450                 450
 je_ext              450                 450
 lonll        -1.45000004768372               -1.08000000000000     
 latll        -2.00000000000000               -1.19000000000000     
 lonur         2.59100008010864                1.88100000000000     
 latur         2.04099988937378                1.68100000000000     
 dlon         9.000000284615497E-003          8.999999999999999E-003
 dlat         8.999999753616435E-003          8.999999999999999E-003
 pollat        45.0000000000000                45.0000000000000     
 pollon       -172.000000000000               -172.000000000000     
 polgam       0.000000000000000E+000          0.000000000000000E+000
 wrong grid for LM external parameters
 *------------------------------------------------------------*
 *    PROGRAM TERMINATED BECAUSE OF ERRORS DETECTED
 *              IN ROUTINE:   int2lm_org
 *
 *    ERROR CODE is            2
 *    Error in read_nc_gdefs_ext_lm


The namelist LMGRID I am using is the following:
 &LMGRID
  ielm_tot=330, jelm_tot=320, kelm_tot=40,
  pollat =  45.0, pollon = -172.0,
  dlon=0.009, dlat=0.009,
  irefatm=2,
  delta_t=100, h_scal=10000,
  startlat_tot  = -1.19, startlon_tot  = -1.08,


Could you please help me ?

Replies (2)

RE: wrong grid for LM external parameters - Added by Burkhardt Rockel about 6 years ago

Although the external data can cover a larger area the grid mesh in the overlapping region has to be exactly the same as defined in the namelist. In your case the definition startlon_tot = -1.08 seems to be the problem, please try e.g. startlon_tot = -1.081 startlon_tot = -1.09

RE: wrong grid for LM external parameters - Added by Edoardo Bucchignani about 6 years ago

Thank you Burkhardt, now it works.

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