The mere use of netCDF is not sufficient to make data "self-describing" and meaningful to both humans and machines.
The names of variables and dimensions should be meaningful and conform to any relevant conventions. Dimensions should have corresponding coordinate variables where sensible.
Attributes play a vital role in providing ancillary information. It is important to use all the relevant standard attributes using the relevant conventions. For a description of reserved attributes (used by the netCDF library) and attribute conventions for generic application software, see Attribute Conventions.
A number of groups have defined their own additional conventions and styles for netCDF data. Descriptions of these conventions, as well as examples incorporating them can be accessed from the netCDF Conventions site, http://www.unidata.ucar.edu/netcdf/conventions.html.
These conventions should be used where suitable. Additional conventions are often needed for local use. These should be contributed to the above netCDF conventions site if likely to interest other users in similar areas.