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Greg, The ENS_ functions available in current GEMPAK releases allow you to use individual input files to create an ensemble by enclosing the list of files in the curly braces eg "{file1; file2; ...fileN}" in GDFILE. Use ENS_SAVG() to create a mean, as describe in the "phelp gfunc" help documentation for the ENS_ functions. I have the start of a web page showing some ensemble computations at: http://www.unidata.ucar.edu/software/gempak/examples/ensembles/ The examples on the web page use the GEFS ensemble members, rather than a list of individual modelnames in the "{}", but you might find some examples useful. Steve Chiswell Unidata User Support > Back in June I attended the COMAP symposium at UCAR in Boulder. While > there, I was told that it is possible to create an ensemble of my local > WRF model runs using GEMPAK. If this indeed true, what gempak programs > would I need to use to create an ensemble mean from my various members? > > Thanks, > > Greg > > -- > Greg Garrett > Science and Operations Officer > National Weather Service > Jackson MS > 601.939.2786 > address@hidden > > Ticket Details =================== Ticket ID: VWZ-136850 Department: Support GEMPAK Priority: Normal Status: Closed