Re: grib2 file

On Wed, 28 Mar 2007, Adolf STIPS wrote:

> Dear Mary,
>
>
> I've got a meteosat MPEF/fir file (fires) which is supposed to be grib2.
>
> (See the attached small file).
>
> I'm using the following NCL version (do not remember the last update):::
> .
> .
> .
> NCAR Command Language Version 4.2.0.a032
>
> This is what I get, if I try to open the file:::
>
> ncl 2> f=addfile("200703270800-fir.grb","r")
>
> fatal:NclGRIB: Could not open (200703270800-fir.grb) no grib records found
>
> fatal:Could not open (200703270800-fir.grb)
>
>
> Might this be related to the fact, that NCL is not reading grib2 files?
>
> If the answer is YES, what can I do to read it, is the actual NCL version
> able to read it?

Dear Adolf and others,

All NCL versions up to and including 4.2.0a34 do not support the reading
of GRIB2 files. It is version 4.3.0, of which I announced a test version
yesterday, that will be able to read these files.

When I run version 4.3.0 on your file, I get:

reader[228] ncl
  Copyright (C) 1995-2007 - All Rights Reserved
  University Corporation for Atmospheric Research
  NCAR Command Language Version 4.3.0
  The use of this software is governed by a License Agreement.
  See http://www.ncl.ucar.edu/ for more details.
ncl 0> a=addfile("200703270800-fir.grb","r")
warning: Entry (9) not found in code table file /usr/local/lib/ncarg/grib2_codetables/ncep/4/4.2.3.0.table
warning: Entry (9) not found in code table file /usr/local/lib/ncarg/grib2_codetables/ncep/4/4.2.3.0.table
warning:NCL does not yet fully support GRIB2 Grid template 90, no coordinate variables will be supplied for this grid
warning: Entry (-1) not found in code table file /usr/local/lib/ncarg/grib2_codetables/ncep/4/4.5.table
ncl 1> print(a)
Variable: a (file variable)
filename: 200703270800-fir
path: 200703270800-fir.grb
    file global attributes:
    dimensions:
       lat_0 = 3712
       lon_0 = 3712
    variables:
       float VAR_3_0_9_P30_L-1_G0 ( lat_0, lon_0 )
          center : EUMETSAT Operation Centre
          production_status : Operational products
          long_name : unknown variable name
          units : unknown
          _FillValue : -999
          grid_type : Space view perspective orthographic
          parameter_discipline_and_category : Space products, Temperature
          parameter_template_discipline_category_number : ( 30, 3, 0, 9 )
          second_level_type : Reserved
          first_level_type : -1
          level : ( 0, 9 )
          forecast_time : 255
          initial_time : 03/27/2007 (08:00)

I will find out if these warning messages are something we can take
care of. Meanwhile, if you are interested in obtaining a test copy of
4.3.0, send me a personal email.

--Mary

>
>
>
>
> Many thanks for any help with this, Adolf
>
>
>
>
>
>
>
> ------------------------------------------------
>
> Adolf Stips
>
> Global Environment Monitoring unit
>
> CEC Joint Research Centre, TP 272
>
> I-21020 Ispra, Italy
>
> Tel: +39-0332-789876
>
> Fax: +39-0332-789034
>
> ------------------------------------------------
>
> "The views expressed are purely those of the writer and may not in any
> circumstances be regarded as stating an official position of the European
> Commission."
>
>
>
>
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Received on Wed Mar 28 2007 - 08:45:47 MDT