Stefan, > I have tried to read a synop result in .nc in NCL without succes. > You can visualise it ? I'm afraid that we (the Unidata Program Center) don't use NCL to view SYNOP reports (we use McIDAS, GEMPAK or IDV) -- so we can't help you with this. You might try NCL support at <http://www.ncl.ucar.edu/>. Regards, Steve Emmerson Ticket Details =================== Ticket ID: YIS-262756 Department: Support UDUNITS Priority: Normal Status: Closed