SWAN WAXA 500m wave hindcast

This collection contains a regional SWAN wave model configured over the southwest WA region at 500m resolution, run from 1980 through to November 2021, produced in 2022.

The SWAN wave model was configured on an extended “WAXA” domain from around Guilderton, WA to Gnarabup, WA and extending offshore to 114.4°E.
The model was forced on the boundary with CAWCR Wave Hindcast spectral wave data. Wind forcing in the domain was provided from a CCAM downscaling of ERA5 data at 12km resolution. Bathymetry was an internally generated product comprising blended low-resolution GEBCO bathymetry, GA250 bathymetry/topography and high-resolution LiDAR-survey derived bathymetry/topography.
The hindcast was run using an Airflow workflow tool to concurrently run all months of the 40 years on the high performance computer, by adding spin up time to the start of each month.

The model was run from 1980 to 2021 inclusive, however due to spin up time, January 1980 had to be run separately, and December 2021 could not be run due to needing data from January 1, 2022 which was not available.

The data is arranged in monthly folders (of the form YYYYMM01.000000_0), each month contains 3 netCDF files:
- swan_out.nc, the gridded output,
- spec_out.nc and schism_bnd_spec_out.nc, which are spectral output across the domain, and along the boundary of a nested SCHISM-WWM3 hydrodynamic-wave coupled littoral model to be nested inside this domain.