Hi Don,YES YES YES!! That did the trick ... and since the proof's in the pudding ...here it is!
Thanks!! --Kevin On 02/03/2012 05:14 PM, Don Murray wrote:
The problem is that for grib2 data, the pressure levels are in Pascals, so you need to use 50000 and 10000.GEMPAK always stores levels to hPa - the benefit of having a known vocabulary, but then again, you have to convert to GEMPAK format. ;-)Don On 2/3/12 9:52 AM, Kevin R. Tyle wrote:Hi all, I set up a formula in IDV to plot thermal wind vectors, a la: <derived description="thermal wind in a layer" formula="thrm(F1,user_Top_of_Layer[default=500],user_Bottom_of_Layer [default=1000])" id="thermalWind" isdefault="false" isenduser="true"> Whenever I do this on a GRIB2 format grid file, e.g. realtime NAM or GFS from the motherlode or atm-nsf opendap servers, I end up with all missing data when I load in the formula, specify my levels, and choose the 3D geopotential height from the GRIB2 file. If I do the same on the same model data that has been converted to GEMPAK, and also with the sample model data used in the IDV Workshop (which I believe is GRIB1), the thermal wind vectors plot fine.I suspect there is some issue specifically related to GRIB2 format here ...Thanks for looking into this! --Kevin _____________________________________________ Kevin Tyle, Systems Administrator Dept. of Atmospheric & Environmental Sciences University at Albany Earth Science 235, 1400 Washington Avenue Albany, NY 12222 Email: ktyle@xxxxxxxxxx Phone: 518-442-4578 _____________________________________________ _______________________________________________ idvusers mailing list idvusers@xxxxxxxxxxxxxxxx For list information, to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/
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