Abstract
Reliable wave resource characterization is necessary for the accurate estimation of available resources. However, a minimum of 10 years has been recommended for such analysis, considering the impact of changing climate on the selection of a suitable period for wave energy assessment is necessary. Hence, in this work, we used more than five decades of wave characteristics simulated globally to investigate the role of selecting the period of wave energy assessment in the estimation of available resources. For this purpose, the numerical simulation of waves was carried out globally using Simulating WAves Nearshore (SWAN) model forced with global re-analysis wind data, JRA-55, developed by Japan Meteorological Agency (JMA). The performance of the model was investigated using ERA-5 reanalysis wave data. Comparison of monthly mean wave characteristics showed a reliable performance of SWAN at a global scale, even though the model has been developed for nearshore wave modeling purposes. The validated model was then used to generate the wave characteristics for 55 years. The wave characteristics in 5 decades were analyzed not only intra-annually but also on a multi-decadal scale. In addition, the wave climate and wave energy were obtained at different time scales, and the results were compared with 55-yearly wave climate, and the impact of selecting different intervals was discussed. Moreover, the relationship between the change of different wave parameters and the change of wave energy in the long-term was assessed.
| Original language | English |
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| Pages | 1986-1-1986-5 |
| Number of pages | 5 |
| Publication status | Published - 9 Sept 2021 |
| Event | 14th European Wave and Tidal Energy Conference, EWTEC 2021 - Virtual, Online Duration: 5 Sept 2021 → 9 Sept 2021 |
Conference
| Conference | 14th European Wave and Tidal Energy Conference, EWTEC 2021 |
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| City | Virtual, Online |
| Period | 5/09/21 → 9/09/21 |
Funding
The authors are thankful to Japan Meteorological Agency (JMA) for providing JRA-55 dataset, and to SWAN team at Delft University of Technology for making the model freely available. “This work was supported by the Hakubi Center for Advanced Research at Kyoto University, and JSPS Grants-in-Aid for Scientific Research (KAKENHI), grant No. 20K04705, supported by the Ministry of Education, Culture, Sports, Science, and Technology of Japan (MEXT).” B. Kamranzad is with the Hakubi Center for Advanced Research, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto, 606-8501, Japan, and Graduate School of Advanced Integrated Studies in
Keywords
- decadal change
- wave climate
- wave energy
- climate change
- coastal engineering
- tidal power
- wave energy assessments
