Hello,
I am using the Wavewatch III model for my research . Could anyone clarify if it's possible to extract wind wave and swell parameters separately from this model?
https://github.com/gvoulgaris0/WavePart/blob/v1.1/WAVEPART_Contents.html
here you can find the code, which is for partitioning wave systems.
BTW, if you download the WW3 data from NOAA database, there should be an option to get access to the partitioned data. Even ERA5 reanalysis (for WAM model), provides wave data for different wave systems. However, if you run the WW3 model yourself, I suppose the code, that I sent you, will be helpful.
Hi Fatemeh,
in ww3 there are several options to separate wind wave systems.
It depends on the choice which is made in ww3_grid.nml (ww3_grid.inp) file.
The partitioning method is set in the MISC namelist in ww3 grid.inp via
the PTM parameter:
• PTM=1: Wind sea and swells defined using topographic partitions
and classified using a wind sea fraction cutoff (WWIII default scheme).
Outputs wind-sea plus swell 1,2,3 etc.
• PTM=2: Wind sea and swells defined using topographic partitions and
spectral wave-age cutoff. Outputs wind-sea plus swell 1,2,3 etc.
• PTM=3: Wave components defined using topographic partitions only.
Outputs partitions ranked by wave height as partition 1,2,3 etc.
• PTM=4: Wind sea and swell defined using spectral wave-age cutoff.
Outputs wind-sea and single swell partition.
• PTM=5: Wave components defined using a user defined frequency cut-
off (PTFCUT). Outputs high frequency and low frequency partition
If you can answer which method of partitioning has been set, then everything is possible to recieve from wavewatch3 output.
Hi,
Thank you @Vitali Sharmar for the detailed explanation. I understand the setup. Currently, the model outputs swell heights as partitions, and getting swell heights directly from the model without post-processing isn't possible.
Best regards, Fatemeh