Hello,
I found the Normalization case of WC13 tutorial cannot compute the model coefficient even if you turn on the switch in c4dvar.in and set the NADJ to be different form the NTIMES.
In short, older version of WC13 Normalization can give us model, initial, forcing and boundary normalization coefficients. But the latest version (revision 918) somehow cannot generate the model normalization coefficients. I believe there's a bug when updating the new version.
If you run the WC13/Normalization case with the latest version (revision 918), you will not be able to generate the model normalization coefficient file.