Floating point execption with WPP and copygb

Questions relating to the use of the WRF Post Processor V3

Floating point execption with WPP and copygb

Postby Daniël » Tue May 27, 2008 10:38 am

Hi,

I’m running WRF-ARW v3 on a polar stereographic projection. To upload it into our database, so our forecast meteorologists to use it, I need to have it on a lat-lon grid. Therefore I’m using the WPPv3.
When I run the WPP for the first output file of WRF it works fine, but when I start with the second (FP=1h) output file of WRF it gives a “Floating point execption�.

Itag with only the first output, which works:
../wrfprd/wrfout_d01_2008-05-23_00:00:00
netcdf
2008-05-23_00:00:00
NCAR


itag with all the output files, which gives an error:
../wrfprd/wrfout_d01_2008-05-23_00:00:00
netcdf
2008-05-23_00:00:00
NCAR
../wrfprd/wrfout_d01_2008-05-23_01:00:00
netcdf
2008-05-23_01:00:00
NCAR
../wrfprd/wrfout_d01_2008-05-23_02:00:00
netcdf
2008-05-23_02:00:00
NCAR
../wrfprd/wrfout_d01_2008-05-23_03:00:00
netcdf
2008-05-23_03:00:00
NCAR


the logfile of the run with all the input files:
...
...
...
L=(10000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 )
(SFC WIND GUST )
L=(10000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 )
(EMISSIVITY )
L=(10000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 00000 )
WRFPOST: RETURN FROM READCNTRL. IEOF= 0
GRID NUMBER = 255
IGDS= 0 255 5 89 101
42575 -5665 8 3500 18000 18000
0 64 0 0 0 0
0
GRIBIT:FNAME=
WRFPRS.GrbF01
GRIBIT: OPENED 70 FOR GRIB DATA
WRFPRS.GrbF01
GRIBIT: 2 SHUELL MEAN SLP 102 0 0
calculating radar ref for non-Ferrier scheme
IICE= 0
Floating point exception


The WRFPRS.GrbF00, griddef.out and copygb_hwrf.txt files are made successfully and the WRFPRS.GrbF01 just partly.
When I tried to run copygb with the WRFPRS.GrbF00 it gives a “Floating point execption� too:

wrf@wrf1:~/wrfrunoutput/2008052300/postprd$ read nav < 'copygb_gridnav.txt'
wrf@wrf1:~/wrfrunoutput/2008052300/postprd$ export nav
wrf@wrf1:~/wrfrunoutput/2008052300/postprd$ ../../../WRF3/WRFPP/WPPV3/exec/copygb.exe -xg "${nav}" WRFPRS.GrbF00 WRFfinal2.grb
Floating point exception


Could you help me to solve this?
Thanks in advanced,

Daniël
Daniël
 
Posts: 5
Joined: Tue Apr 15, 2008 7:43 am

Re: Floating point execption with WPP and copygb

Postby DVD » Tue Jun 17, 2008 6:17 am

I solved this by removing the vars that gave the problems from the wrf_cntrl.parm file
DVD
 
Posts: 18
Joined: Tue Jun 17, 2008 5:36 am


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