20010131: ETA model data

Jason,

You can use a separate pqact FILE action for each forecast hour keying 
on the WMO header from the IDD. See table A.3  (in Sect5 of the grib
documentation at: ftp://ftp.ncep.noaa.gov/pub/nws/nmc/docs/gribed1/)

The table mentioned above shows the relationship between the A(2) character
of the WMO header and the forecast hour of the the data. 

You can create pqact.conf FILE actions such as:
^Y.RA KWBE ([0-3][0-9])([0-2][0-9])
        FILE    eta40grb.(\1:yyyy)(\1:mm)\1\2f000
^Z.RB KWBE ([0-3][0-9])([0-2][0-9])
        FILE    eta40grb.(\1:yyyy)(\1:mm)\1\2f003
^Y.RB KWBE ([0-3][0-9])([0-2][0-9])
        FILE    eta40grb.(\1:yyyy)(\1:mm)\1\2f006
^Y.RC KWBE ([0-3][0-9])([0-2][0-9])
        FILE    eta40grb.(\1:yyyy)(\1:mm)\1\2f012
etc.

Here is the forecast hour/WMO header pattern for ETA on grid 212 
currently on NOAAPORT:

F000/ Y.RA
F003/ Z.RB
F006/ Y.RB
F009/ Z.RE
F012/ Y.RC
F015/ Z.RH
F018/ Y.RD
F021/ Z.RK
F024/ Y.RE
F027/ Z.RL
F030/ Y.RF
F033/ Z.RO
F036/ Y.RA
F036/ Y.RG
F039/ Z.RP
F042/ Y.RH
F045/ Z.RQ
F048/ Y.RI
F051/ Z.RR
F054/ Z.RM
F057/ Z.RS
F057/ Z.SR
F060/ Y.RJ




Steve Chiswell
Unidata User SUpport



On Wed, 31 Jan 2001, Jason J. Levit wrote:

> 
>   Hi everyone,
> 
>   I'm trying to receive ETA model data through the IDD, in GRIB format,
> and break it up into several smaller files per forecast hour data.  Does
> anyone else out there try to do this automatically?  For example, the
> files you can FTP from the NOAA OSO server are GRIB files containing
> data for every three hours; I currently FTP files like this, and make
> them into these types of file names:
> 
>    eta40grb.2001013112f00
>    eta40grb.2001013112f03
>    eta40grb.2001013112f06
> 
>   ...etc.  Is there a way to do this automatically within the pqact.conf
> file?
> 
>   Thanks for any help!
> 
>   Jason
> 
> --  
> ----------------------------------------------------------------------------
> Jason J. Levit, N9MLA                      Research Scientist,
> jlevit@xxxxxx                Center for Analysis and Prediction of
> Storms
> Room 1022                                 University of Oklahoma
> 405/325-3503                              http://www.caps.ou.edu/
>