Help to read grib files

[oluseun idowu]

Dear Diane,
Many thanks for your help. I gave the command

[oluseun at b129pc124 ~]$ gribmap -v -i sample_grib_file.ctl

This is the error message

Open Error:  Missing or invalid dimension increment value
  --> The invalid description file record is:
  --> xdef 432 linear 340.000000 -32.767000

  The data file was not opened.
File name is:  sample_grib_file.ctl

Anyway as you suggested, I attach the file to this email and again, the data was received from UK Met Office
from their limited area model

I will expect your reply. Thanks once more!

Idowu

Below is the description of the file as given to me from UK Met Office.
----------------------------------------------------------------------
OK, I've attached a sample grib file to this e-mail. It contains the
level-1 model temperature field at T+48 and T+54. Once you confirm you
can read this I'll put the full data-set for one forecast onto our ftp
server: email.metoffice.gov.uk. This will be ~660Mb of data. We can get
these file-sizes down if you can work with data over a smaller
geographical area or you don't need all the vertical levels.

 Luke.
 ----------------------------------------------------------------------------------------------------------------------------------------------------


Diane Stokes <Diane.Stokes at NOAA.GOV> wrote: Dear Idowu,

That's just a warning message.  It's possible that reasonable variable
names were chosen for your data.  Did you try to run gribmap on the new
ctl file yet?

    gribmap -v -i sample_grib_file.grib.ctl
The "-v" (verbose) option is important as it will tell you which records
matched.  Other options may be necessary as well, but the above is a start.

If gribmap does not work, please post your control file to the list.
That may help us to help you.

Also, where did you get your sample grib file, sample_grib_file.grib?

     Diane


oluseun idowu wrote:
> Dear Diane,
> Thanks for your help. I can find the grib2ctl.pl in my system now though
> under grib_files folder. The next problem is that in an attempt to make
> grib.ctl file the error message below was reported. Any further help?
>
> [oluseun at b129pc124 ~]$ ./grib_files/grib2ctl.pl sample_grib_file.grib
>  >sample_grib_file.grib.ctl
>
> Undefined parameter table (center 74-2 table 160), using NCEP-opn
>
> Undefined parameter table (center 74-2 table 160), using NCEP-opn
>
>
>
>
> */Diane Stokes /* wrote:
>
>     The web address is actually:
>
>     http://www.cpc.ncep.noaa.gov/products/wesley/grib2ctl.html
>
>     There's some useful information there in addition to the link to the
>     script.
>
>     Diane
>
>     See Hai Ooi wrote:
>      > Dear Oluseun Idowu,
>      >
>      > The grib2 ctl.pl is available in the website you
>      > indicated
>      > [http://www.cpc.noaa.gov/products/wesley/grib2ctl.html]
>      > Anyway, hope the attached perl file can help you to
>      > resolve your problem. If in doubt, please refer to the
>      > usage document in the above-mentioned webpage.
>      >
>      > Best regards.
>      >
>      > Ooi
>      >
>      >
>      >
>      > Send instant messages to your online friends
>     http://uk.messenger.yahoo.com
>
>
> ------------------------------------------------------------------------
> To help you stay safe and secure online, we've developed the all new
> *Yahoo! Security Centre*
> .
>

--
Diane Stokes
Environmental Modeling Center
National Weather Service/NOAA




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