[gradsusr] cat different resolution GFS files

[Brian Gaze]

Wesley - thanks for this.

Do you (or anyone else here) know if there is a version of Win x86 version
of wgrib2 compiled with IPOLATES? (The version I have and the one bundled
with Open Grads aren't)

Brian



On 13 April 2013 23:55, Wesley Ebisuzaki - NOAA Federal <
wesley.ebisuzaki at noaa.gov> wrote:

> Brian,
>
>    You can cat grib2 files together but GrADS can only handle 1 grid
> definition
> per control file.   You can use wgrib2 to convert your grib file to a
> common
> grid by
>
>    wgrib2 IN.grb -new_grid_wind earth -new_grid latlon lon0:nlon:dlon
> lat0:nlat:dlat  OUT.grb
>
> This requires that your wgrib2 was compiled with the optional IPOLATES
> library.
>
> Wesley
>
>
>
> On Sat, Apr 13, 2013 at 1:34 PM, Brian Gaze <brian.gaze at ntlworld.com>
> wrote:
> > Hi,
> >
> > I'm trying to cat GFS GRIB2 files at 12 hour steps, from 0 to 384 hours,
> and
> > then use the concatenated file which is generated for plots in GrADS. The
> > GFS files I'm using are 0.5 deg from 0 to 192 hours, and 1 deg from 204
> to
> > 384 hours. The cat seems to work ok, and I'm able to open and query the
> file
> > in GrADS. The problem is that when I try and make a plot (using set t 1
> > last) only values for 0 to 192 hours (the 0.5 deg files) are plotted.
> >
> > Is the problem occurring because I'm  concatenating different resolution
> > files (0.5 deg and 1 deg)? If this is the case, is there a workaround /
> > solution other than switching over to 1 deg files for the full range?
> >
> > PS: Using GrADS 2.0.a3.oga.1
> >
> > Thanks
> >
> > Brian
> >
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> >
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