[gradsusr] Gribmap question

[Wesley Ebisuzaki]

Bernd,

          You need the -b option in gribmap

                 -b   -> use the start of the averaging period.

Status of -b

      grib1:
        gribmap supports -b
        grib2ctl does not support -b

     grib2:
         gribmap supports -b   (v2.0a8)
         g2ctl supports -b


        Wesley Ebisuzaki


Becker, Bernd wrote:
> Hi,
>
> how can I write a .ctl file for grib data,
> describing an average over a period of days starting at a 
> certain distance from the initial data time?
>
> The Grib file contains 3 pieces of date information:
> time, the forecast run was initialized
> start time 
> end time of averaging period
>
> for each grib field in the file. The file contains 4 monthly means:
>
> initial time: 20100622
> start time  : 20100701
> end   time  : 30 days later (20100731)
>
> initial time: 20100622
> start time  : 20100801
> end   time  : 30 days later (20100831)
>
> initial time: 20100622
> start time  : 20100901
> end   time  : 29 days later (20100930)
>
> initial time: 20100622
> start time  : 20101001
> end   time  : 30 days later (20101031)
>
> tdef in ctl file :
> tdef 4  linear 00Z01Jul2010 1mo
>
> This does not work.
>
> I tried gribmap with:
> -t0
> -fnnn
> to no avail
> and need some input from you. 
>
> Many thanks!
> Bernd.
>
> --
> Bernd Becker   Climate Impacts Product Development
> Met Office Hadley Centre    FitzRoy Road  Exeter   Devon EX1 3PB  United
> Kingdom
> Tel.: +44 (0) 1392 884511 Fax: +44 (0)870 900 5050
> E-mail:bernd.becker at metoffice.gov.uk -  http://www.metoffice.gov.uk
>
>
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