This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
> > 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