WW3-SWAN nesting

[beargui]

Hello everyone,

I would really appreciate it if you help me with the following problem:

I would like to use WW3 spectral data outputs as input for SWAN. I used WW3 v5.16 to obtain spectral information in 327 output points. Those points define a boundary for SWAN. I simulated 30 years. I obtained files in the format ww3.yyyymmdd.nc (using the program ww3_ounf) and ww3.yyyymmdd_spec.nc (using the program ww3_ounp).

My question is: it is possible to use the WW3 outputs obtained with the program ww3_ounp (ww3.yyyymmdd_spec.nc files) as boundary input for SWAN? Or do I need to create a .spc file using the program ww3_outp, type=1 and sub-type=3? I am afraid that a .spc file containing 30 years of spectral data at 327 points would be unmanageable.

In any case, either using the _spec.nc files or the .spc file, should I have to convert the files to be read by SWAN? Or can the WW-SWAN nesting be done directly, without any file conversion?

I am looking forward to hearing from you soon.

Thank you all