LetterModelling windwave driven by typhoon Chan-Hom (201509) in the East China Sea

- Discussed anisotropic energy dissipation in the wave propagation direction.
- The new modified model to simulate and forecast wave evolution caused by Chan-Hom (201509).
- Discussed typical wave parameters near Donghai Bridge.

Typhoon-generated waves pose a serious threat to the development of offshore wind power; therefore typical wave parameters caused by typhoon near Donghai Bridge, a demonstration area of offshore wind farm, were analysed. We pay particular attention to the dissipation term which is one of the source terms of governing equation for windwave evolution in WAVEWATCH III. Anisotropic energy dissipation in the wave propagation direction is considered and further applied in our model. A good agreement is observed by comparison with in situ data. Furthermore, the new improved model is used to simulate and forecast wave evolution caused by Chan-Hom (201509). The evolution of typical wave parameters i.e. significant wave height and mean wave period were discussed in the East China Sea, especially near Donghai Bridge.