[gradsusr] GFS data

[Ricardo Hallak]

Thanks Wesley, 
it certainly is an information that most of us didn't know.
Regards,
Ricardo

On Wed, 8 Feb 2012 14:16:10 -0500, Wesley Ebisuzaki wrote
> Hi,
> 
>    gfs.t12z.prgb2f12 is the 12 hour forecast started from 12Z.   Clue is the f(forecast hour)
> 
>    gfs.t12z.prgb2f00 is the 3 minute or so forecast started from 12Z.  Unfortunately the
>        metadata doesn't mention it is a N minute forecast.
> 
>    gfs.t12z.pgrb2anl is the analysis.
> 
>    The f00 is the model state after a few time steps of the model integration.  You
> may see some transients as the model adjusts from the analysis state to something
> on the "slow manifold".
> 
>         Wesley
> 
>  
> 
> On Wed, Feb 8, 2012 at 11:06 AM, Jeff Lake <admin at michiganwxsystem.com> wrote:
> f00 is always analysis
> 
> -Jeff Lake
> MichiganWxSystem.com
> WeatherMichigan.net
> TheWeatherCenter.net
> GRLevelXStuff.com
> 
> On 2/8/2012 10:38 AM, Gisele dos Santos Zepka wrote:
> > Hello users,
> >
> > I need to run WRF for 24 hours using 0.5 deg GFS data (analysis from 12
> > UT + 24 forecasts). So, my first GFS file is gfs.t12z.pgrb2f00 (that I
> > believe to be the analysis), and every 3 hours I have the GFS forecasts
> > being the last file gfs.t12z.pgrb2f24. I don't know if they are the
> > right files to use. I am also confused between two archives
> > gfs.t12z.pgrb2f00 and gfs.12z.pgrb2f12, which of them is the analysis?
> >
> > Any help will be welcome.
> >
> > Thanks.
> >
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Ricardo Hallak

Department of Atmospheric Sciences (DCA) 
Institute of Astronomy, Geophysics and Atmospheric Sciences (IAG) 
University of São Paulo (USP) 
Rua do Matão, 1226 - Cidade Universitária - São Paulo SP 05508-900 
Phone.: +55 (11) 3091-2850; 3091-4703 
Fax: +55 (11) 3091-4714

 
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