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[netCDFJava #WIK-413864]: Reading forecast dates from grib2
- Subject: [netCDFJava #WIK-413864]: Reading forecast dates from grib2
- Date: Wed, 27 Jul 2011 11:15:37 -0600
>
> it says its ensemble data, but all have perturbation = 0. So an ensemble
> dimension of 1 is created.
>
> im seeing 2 variables, Temperature and "Total Precipitation rate".
>
> For Temperature:
>
> 1) multiple runs (refDate), 6 hours apart.
> 2) for each refDate, 6 hour forecasts out to 360 hours.
>
> since these overlap, I end up with 664 unique forecast times. (this is in 4.3
> sorry you cant see it yet).
>
> For Total Precipitation rate:
>
> 1) multiple runs (refDate), 6 hours apart.
> 2) for each refDate, 6 hour forecasts out to 360 hours
> 3) each forecast is for the interval 0-foreast (0 = refDate), so one sees
> 0-6, 0-12, 0-18 ,...0-360.
>
> these constitute unique coordinates (no overlap) so you get 36844 of them.
> The only thing I can think of if I am misunderstanding what the intervals
> are. (?)
>
> what would you expect ?
>
>
>
>
> Actually I would expect a run dimension , e.g. :
>
> Total_precipitation_rate (run=600, time=60, ......)
>
> since the file contains approximately 600 forecast runs - first
> refDate=01/01/2011 00:00, last refDate=05/31/2011 18:00,6 hours apart, and
> the runs are 6 hour forecasts out to 360 hours (this info is provided by
> NDFD DeGrib)
I see, so you actually want this to be an FMRC with a two dimension time
coordinate ?
Ticket Details
===================
Ticket ID: WIK-413864
Department: Support netCDF Java
Priority: Normal
Status: Open
