A new single model configuration (AUSWAVE-G3) will replace the legacy global (AUSWAVE-G) and regional (AUSWAVE-R) systems since
Features of this upgrade include:
Incorporating the latest version of Wavewatch III® (WW3) - version 6.0.7;
Spherical Multiple Cell Grid with two tier refinement
12km and 6km at low latitudes, and
25km and 12km at high latitudes beyond 55oN and 55oS in the zonal (east-west) direction, 12km and 6km remain in the meridional (northsouth) direction);
An increase in spectral resolution from 24 directions and 25 frequency bins to 30 directions and 28 frequency bins;
Interpolation from SMC grids to regular grids at 12.5km for the global domain and 6.25km for the Australian domain;
Newly the runs at 6 and 18 UTC are provided too but with shorter forecast length (up to +156 hours);
METNO
03-10-2023 METNO upgrade
The METNO changes the model from WAM to WAVEWATCHIII v 6.07. since 0Z run on
The new version of the WAM code is Cycle 4.7 (before it was Cycle 4.5) has been implemented since 12Z run on
The main differences with respect to the previous version are updated physics, propagation of waves under sea ice, and a correction for the unrealistic growth of the waves in very high winds. Other differences are: a reformulation of the mean wavenumber and mean frequency as well as a new formulation for detecting freak waves. Also, wave refraction by bottom topography is included which was absent in the previous set-up.
NCEP
23-03-2021 NCEP upgrade
Model Name and version: GFS-Wave, WAVEWATCH III v6.07
Resolution changed to 0.25 degrees
Lead time length changed to +384h
Step frequency: 1 (0:120), 3 (123:384)
NZMS
11-01-2023 NZMS upgrade
The change has been applied since 12Z run on :
Resolution changed to 0.1 degrees
Lead time length changed to +180h
11-06-2021 NZMS technical change
NZMS data after the upgrade on 14-09-2020 contained grid with 1441 longitude points from 0 to 359.9 degrees instead of the intended 1440 points from 0 to 359.75 degrees corresponding exactly to 0.25 degrees resolution. The extra grid point made the resolution slightly less than 0.25. The fix has been applied since 0Z, 11-06-2021 run.
14-09-2020 NZMS upgrade
Resolution changed to 0.25 degrees
Lead time length changed to +168h
PRTOS
24-4-2019 PRTOS topography
Topography field has been updated. It should improve forecasts near coast and islands.