NCEP Grib Conversion problem with NCL 5.2.0.

Dear Mary / Dennis

At ncl 4.3.0 we are able to convert NCEP grib files to nc via ncl_convert2nc (demo grib file attached).

Details as follows:
uname -a
Linux pa.niwa.co.nz 2.6.18-prep #1 SMP Mon Apr 16 23:40:46 UTC 2007 x86_64 x86_64 x86_64 GNU/Linux
[root@pa ~]# ncargpath root
/usr
[root@pa ~]# ncargpath grib2_codetables
/usr/lib/ncarg/grib2_codetables
 
[root@pa tmp]# ncl_convert2nc gep11_t12z_pgrb2af12_2_2010081112.grb -e grb -o .
Processing file: gep11_t12z_pgrb2af12_2_2010081112.grb...
 Copyright (C) 1995-2007 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 4.3.0
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.

[root@pa tmp]# ls -l *.nc
-rw-r--r-- 1 root root 428228 Feb 16 03:52 gep11_t12z_pgrb2af12_2_2010081112.nc

and / or

[root@pa tmp]# ncl_filedump -c gep11_t12z_pgrb2af12_2_2010081112.grb | head -20
 Copyright (C) 1995-2007 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 4.3.0
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
Variable: f (file variable)

filename: gep11_t12z_pgrb2af12_2_2010081112
path: gep11_t12z_pgrb2af12_2_2010081112.grb
   file global attributes:
   dimensions:
      lat_0 = 73
      lon_0 = 144
      lv_ISBL0 = 2
   variables:
      float TMP_P1_L100_GLL0 ( lat_0, lon_0 )
         center : US National Weather Service - NCEP (WMC)
         production_status : Operational products
         long_name : Temperature
         units : K

However, on a (different) RHEL5.5 system. at ncl 5.2.0

uname -a
Linux fc-2 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
[root@fc-2 ~]# ncargpath root
/usr
[root@fc-2 ~]# ncargpath grib2_codetables
/usr/share/ncarg/grib2_codetables

we get from ncl_filedump (and equivalently from ncl_convert2nc

[root@fc-2 ~]# ncl_filedump -c gep20_t12z_pgrb2af372_2_2010081112.grb
 Copyright (C) 1995-2010 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 5.2.0
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
fatal:NclGRIB2: Invalid Product Definition Template.
fatal:Could not open (gep20_t12z_pgrb2af372_2_2010081112.grb)
Variable: f (file variable)
(0) File Missing Value : -1
warning: getfiledimsizes(): undefined file variable
Segmentation fault

Hopefully there is enough information here to enable you to suggest the solution that has evaded us to date...

Thanks for your help

Michael

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