[gradsusr] cat *grib* > big_grib messes time frames
davide.sacchetti at arpal.gov.it
Mon Oct 29 11:15:43 EDT 2018
I never experienced errors concatenating grib files, also with hundreds
of grib and with resulting file of 1GB.
I would check control file, also check if grib grids are all identical
or not, if analysis is the same for all grib, if time step is
The method cat *wrfprs* > grib.grb2 normally works.
On Mon, 2018-10-29 at 15:15 +0100, Ivan Toman wrote:
> Hello GrADS users,
> I'm experiencing problem with concatenating multiple gribs into
> one if there are more than 255 grib files. If there is 255 or less,
> something like
> cat *wrfprs* > grib.grb2
> works as expected.
> But, if I include 256 or more wrfprs gribs, time frames start to
> around (ie first frame in big grib is obvously not first
> of wrf simulation, although wgrib2 and GrADS say it is correct time).
> I don't think there is size problem because gribs are relatively
> and resulting big grib is under 400MB. I use grib2 format.
> Did anyone experienced similar problem? Any other method to
> gribs into single one that might work better?
> Thank you
> Ivan Toman
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> gradsusr at gradsusr.org
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