Lawrence Berkeley National Laboratory
Impact of tropical cyclones on modeled extreme wind-wave climate
- Author(s): Timmermans, B
- Stone, D
- Wehner, M
- Krishnan, H
- et al.
Published Web Locationhttps://doi.org/10.1002/2016GL071681
©2017. American Geophysical Union. All Rights Reserved. The effect of forcing wind resolution on the extremes of global wind-wave climate are investigated in numerical simulations. Forcing winds from the Community Atmosphere Model at horizontal resolutions of ∼1.0° and ∼0.25° are used to drive Wavewatch III. Differences in extreme wave height are found to manifest most strongly in tropical cyclone (TC) regions, emphasizing the need for high-resolution forcing in those areas. Comparison with observations typically show improvement in performance with increased forcing resolution, with a strong influence in the tail of the distribution, although simulated extremes can exceed observations. A simulation for the end of the 21st century under a RCP 8.5 type emission scenario suggests further increases in extreme wave height in TC regions.