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Hello, Depending on your data, this may or may not be possible. If the netCDF4 file uses features or contains data that cannot be represented in a netCDF3 file, you cannot convert the data. However, if that is not the case, you can use the 'nccopy' command line tool, for example: $ nccopy -3 [input file] [output file] $ nccopy -3 netcdf4.nc netcdf3.nc I hope this helps! -Ward > Dear all, > My name is Marianthi, i am a master student in Geoinformatics in Greece. > And i use netcdf 4 data for my thesis. I would like to ask you if there is > a simple way to trandform my netcdf 4 data to netcdf 3 in order to complet > my process. > > Thank you for your help! > > Special Regards, > Marianthi Karantzia > > Ticket Details =================== Ticket ID: QTJ-996626 Department: Support netCDF Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.