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Just to be sure, I pulled down the file and sucessfully opened it with ncdump from version 4.5.1-development. > > This is a known issue with netCDF 4.5.0; the upcoming release should fix > this, or you can revert to 4.4.1.1 for the time being. If you don't mind > using the experimental 'master' branch (from > https://github.com/Unidata/netcdf-c) you can also bypass this issue there. > > My sincere apologies, > > -Ward > > > Hi, > > > > With reference to blog at > > > > https://www.unidata.ucar.edu/blogs/developer/en/entry/accessing_netcdf_data_by_coordinates > > > > netcdf can't read the example .nc file > > > > $ ncdump -h rtofs_glo_3dz_f006_6hrly_reg3.nc > > ncdump: rtofs_glo_3dz_f006_6hrly_reg3.nc: NetCDF: Unknown file format > > > > > =Dennis Heimbigner Unidata Ticket Details =================== Ticket ID: EZQ-884585 Department: Support netCDF Priority: Normal Status: Open =================== 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.