[gradsusr] Plot GFS grib2 files

[Wesley Ebisuzaki]

claudiomet wrote:
> Hi users!
>
> I'm dowlloading grib2 files GFS outputs from
> http://www.ftp.ncep.noaa.gov/data/nccf/com/gfs/prod/gfs.xxxxxxxxxx/gfs.txxz.pgrb2bfxx
> (and idx file too)
> I have instaled las version of GrADS (2.0.a9), last version of wgrib2
> (1.9.4) and last g2ctl script
>
> I made:
> g2ctl gfs.txxz.pgrb2bfxx > gfs.txxz.pgrb2bfxx.ctl
> and ctl file are correctly crated, then I made:
> gribmap -i gfs.txxz.pgrb2bfxx.ctl
> to update the idx file, then I have 3 files (grib2 file, ctl file and idx file)
>
> I open grads, I load the file, and the file loads correctly,
> but when I want to display any variable (set lev 500 > set HGTprs for
> example) grads says
>
> "Cannot contour grid - all undefines values"
>
> What can be the problem ?
> Thanks!
>   
Hi,

   It seems that the 0.5 degree GFS forecast files were divided into two 
parts:  pgb2fXX and pgb2bfXX.
You can get the common tropospheric levels in the pgb2fXX files.  Check 
the file inventory for more
details.

            Wesley