Converting ECMWF .pp data file into GrADS-readable data format

[See Hai Ooi]

Dear Dr Paul Earnshaw,

      Thank you. I will follow your advice to do that.

      Regards.

Ooi



--- On Mon, 21/7/08, Paul Earnshaw <paul.earnshaw at METOFFICE.GOV.UK> wrote:

> From: Paul Earnshaw <paul.earnshaw at METOFFICE.GOV.UK>
> Subject: Re: Converting ECMWF .pp data file into GrADS-readable data format
> To: GRADSUSR at LIST.CINECA.IT
> Date: Monday, 21 July, 2008, 6:17 PM
> Ooi,
>
> It would be useful to know what the source of your data was. If this is supposed to be ECMWF Reanalysis data then can you not get it direct from ECMWF in GRIB format?
>
> The problems you are facing are in the original .pp file. Note that this is not a GRIB file, it is a file format (called PP) used by the UK Met Office.
>
> It looks like all the floating point data in the file has the wrong byte order, or is corrupted. I can only suggest that you query the source of the data and make sure what they give you is correct.
>
> Cheers,
> Paul
>
> On Fri, 2008-07-18 at 15:26 -0700, See Hai Ooi wrote:
> > Dear Mr Lincoln,
> >
> >      Thank you.
> >
> >      By using the downloaded xconv (version 1.91), I notice that there are two files in the attached .pp data set. Both are 32-bit ieee byteswaped.  However, after selecting one of them to be converted as test.nc file, errors occurred when I opened it in GrADS (window version 1.9.0-rc1).  Can you guide me further, and if possible, provide me the correct step-by-step procedures ?
> >
> >      Best regards.
> >
> > Ooi
> >
> >
> > --- On Fri, 18/7/08, Lincoln Muniz Alves
> <lincoln at CPTEC.INPE.BR> wrote:
> >
> > > From: Lincoln Muniz Alves
> <lincoln at CPTEC.INPE.BR>
> > > Subject: Re: Converting ECMWF .pp data file into
> GrADS-readable data format
> > > To: GRADSUSR at LIST.CINECA.IT
> > > Date: Friday, 18 July, 2008, 10:07 PM
> > > Dear Ooi,
> > > I think that xconv it is a good tool.
> > >
> > > http://badc.nerc.ac.uk/help/software/xconv/
> > >
> > > Lincoln
> >
> --
> Dr. Paul Earnshaw   Global Model Development and
> Diagnostics
> Met Office  FitzRoy Road  Exeter  Devon  EX1 3PB  United
> Kingdom
> Tel: +44 (0)1392 884525  Fax: +44 (0)1392 885681
> email: paul.earnshaw at metoffice.gov.uk website:
> www.metoffice.gov.uk
>
> Met Office climate change predictions can now be viewed on
> Google Earth
> http://www.metoffice.gov.uk/research/hadleycentre/google/

Send instant messages to your online friends http://uk.messenger.yahoo.com