netCDF operators & compression

In order to compress the files generated by either the convertors or PARA-BMU itself, one should make use of the netCDF operators, NCO, and in particular the nccopy utility. A compression level of 9 (maximum) is recommended although it is known that this may not always give the best compression and users may wish to experiment. Invocation is:
 ./nccopy -d9 <input_filename> <output_filename>