MIME type: application/x-netcdf NetCDF data file format. Self-describing format for exchanging scientific data. Used in atmospheric research, GIS, and related fields. NetCDF is an acronym derived from network Common Data Form. Binary file format. Conceptually based on NASA's Common Data Format, but incompatible with this format. Developed by the Unidata center at the University Corporation for Atmospheric Research (UCAR).