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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
HP- > Institution: EUMETSAT > Package Version: 2.2b1 > Operating System: Windows XP > Hardware Information: Java: home: C:\\Program Files\\IDV_2.2b1\\jre version: > 1.5.0_06 j3d:1.3.2 fcs (build12) > Inquiry: Hi > > IDV reports "unknown unit" with for the geopotential and potential vorticity > when reading > them off GRIB files retrieved from the ECMWF archive. Up to know I used such > data rather > rarely and got around by adapting to the data as is. However, now that other > EUMETSAT > people will start to use IDV (and also for my own convenience) it would be > nice to have this > issue settled. Okay. I thought this had been fixed at the table level, but not. I've fixed it and the fix will be in tomorrow's build (which now runs at 8-9Z). FYI, the problem is that the grib tables specify the units with a + in the exponent: K m+2 kg-1 s-1 which we were not handling. In reality, the + is not really standard and I'm going to see if Robb will change the tables. > I attach a sample file with data from a single time slot and level. As you > will see parameters > other than geopotential and PV are to the liking of IDV. > > By and by I have to revise my naive idea of GRIB being straightforward! It all depends on the decoding. ;-) Thanks for finding this. Don Ticket Details =================== Ticket ID: ZBV-533582 Department: Support IDV Priority: Normal Status: Open