[ncl-talk] NCL to replace CDO

[Benjamin Lamptey]

Hi Marston,
Maybe I am missing something. Why not use "ncl_convert2nc" command instead
of an NCL script?

Even if you have many files, you can use the command in a shell script.

Sorry if I missed something earlier but the above command is easier to
convert grib to netcdf.

Regards
Ben

On Fri, Jun 30, 2017 at 11:10 AM, Karin Meier-Fleischer <
meier-fleischer at dkrz.de> wrote:

> Hi Marston,
>
> as I'm also working in the CDO consultancy here in Hamburg, I would like
> to have a closer look at your IFS file, too, to see if the CDO version
> 1.8.2 could handle it.
>
> If the file is not too large you can attach it to an 'offline' email to me
> or upload it creating a new request on https://code.mpimet.mpg.de/
> projects/cdo/boards/1 .
>
> Thanks in advance,
> Karin
>
> Am 27.06.17 um 20:49 schrieb Marston Johnston:
>
> Hi,
>
>
>
> For years I’ve been using CDO to convert ECMWF’s IFS grib files to netcdf
> and converting it from reduced Gaussian grid to regular lat lon.
>
> But CDO has not kept up the pace with updates and they do not respond to
> many questions.
>
> Therefore, I’m attempting to move this part of my processing chain to NCL.
>
> I’m using NCL 6.5 (beta) to read the grib file (see attached log file).
> There 1 or 2 problems and then I have a question.
>
>
>
> 1.)     My NCL script is not finding the experimental variables in the
> grib file. These variables are given the generic names varXXX where XXX can
> be between 88 and 111, for example.
>
> 2.)     The script also doesn’t find the 3D records. I’m not sure how NCL
> finds these records in the grib file and then lists them as a 3D
> (time,lev,lat,lon), not counting the time.
>
> 3.)     If 1 and 2 can be resolved, how can I then convert the reduced
> Gaussian grid to regular lat lon? Would ESMF work if I setup a regular lat
> lon grid?
>
>
>
> Appreciate your thoughts on this.
>
> /M
>
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Marston S. Johnston, PhD
>
> Department of Earth Sciences
>
> University of Gothenburg, Sweden
>
> Email: marston.johnston at gu.se
>
> SkypeID: marston.johnston
>
> Phone: +46-31-7864901 <+46%2031%20786%2049%2001>
>
> Only the fruitful thing is true!
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
>
>
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> --
> Dipl. Geophys. Karin Meier-Fleischer
> Visualization, NCL, CDO
> Application Support
>
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> Bundesstrasse 45a - D20146 Hamburg - Germany
>
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>
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-- 
Benjamin L. Lamptey, PhD (Physicist, Meteorologist, Geoscientist, HPC &
Info Systems)
Acting Director-General
African Centre of Meteorological Applications for Development (ACMAD)
55, Avenue des Ministères, PL6
BP 13184, 1er Arrondissement, Niamey Plateau, Niger,
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Email: b.lamptey at acmad.org; bllamptey at gmail.com <bllamptey at gmail.com>
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