Re: which table to use?

• To: Keith Fielding <Keith.Fielding@xxxxxxxxx>
• Subject: Re: which table to use?
• From: Robb Kambic <rkambic@xxxxxxxxxxxxxxxx>
• Date: Tue, 21 Dec 2004 10:00:30 -0700 (MST)

thanks for the info,

robb...

On Mon, 20 Dec 2004, Keith Fielding wrote:

Dear Robb,

If you are working with raw GRIB data then as defined by WMO,
in GRIB section 1

Byte 4 is the code table number
Byte 5 is the centre identifier and 98 is used for ECMWF data.

Most ECMWF atmospheric data uses ECMWF local GRIB table 128 and
wave data uses ECMWF local GRIB table 140. A few ERA-40 fields
use other table as do some EPS, seasonal and monthly forecasts
fields, but the table is always in section 1.

I hope this helps.

Regards

Keith

> hiya,
>
> my work includes decoding grib products to other formats such as netcdf,
> etc. one model from ecmwf has me confused about what table to use in
> decoding the parameters. the center, sub-center, and table version number
> are 98 (ecmwf), 0 ( wmo ), 1 (?).  i assume 1 relates to version number
> 128 but wanted to confirm this is true. according to your site
> www.ecmwf.int there are table version numbers 128, 129, 130, 131, 140,
> 150, 151, 160, 170, 180, and 190. are there others?  the model is the
> composition of grid 1-12 from ecmwf. thanks for the information.
>
> robb...



Regards

Keith Fielding

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==============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx                   WWW: http://www.unidata.ucar.edu/
==============================================================================