Hi Bo, Yes, it is possible to read netCDF data into a Fortran program. There are both Fortran-77 and Fortran-90 programming interfaces to access data in netCDF files, documented in these two reference manuals: http://www.unidata.ucar.edu/netcdf/docs/netcdf-f77.html http://www.unidata.ucar.edu/netcdf/docs/netcdf-f90.html The NCEP/NCAR Reanalysis data used netCDF-3, so you can ignore all the references to netCDF-4 interfaces and features. Here are some example programs, including Fortran-77 and Fortran-90 programs, that access netCDF data from very simple files: http://www.unidata.ucar.edu/netcdf/examples/programs/ Here is an online workshop that was the basis of a two-day netCDF class: http://www.unidata.ucar.edu/netcdf/docs/workshop/ Here is a tutorial docuent that includes Fortran examples: http://www.unidata.ucar.edu/netcdf/docs/netcdf-tutorial.html To extract an ASCII version of netCDF data, you can use the "ncdump" utility. See this description of ncdump and its options: http://www.unidata.ucar.edu/netcdf/docs/netcdf/ncdump.html#ncdump --Russ --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: NXD-306525 Department: Support netCDF Priority: Normal Status: Closed