Evaluation of a high-resolution wave hindcast model SWAN for the West Mediterranean basin |
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| Institution: | 1. Ecole Nationale Supérieure des Sciences de la Mer et de l''Aménagement du Littoral (ENSSMAL), Departement d’environnement et d’aménagement du littoral, Algiers, Algeria;2. Uluda? University, Department of Civil Engineering, Gorukle Campus, Bursa, Turkey;3. Université des Sciences et Technologie Houari Boumedien (USTHB), Departement Ecologie et Environnement, Algiers, Algeria;1. Uluda? University, Department of Civil Engineering, Gorukle Campus, Bursa, Turkey;2. Delft University of Technology, Civil Engineering and Geosciences, The Netherlands;3. VanVledder Consulting, Olst, The Netherlands;1. Uluda? University, Department of Civil Engineering, Gorukle Campus, Bursa, Turkey;2. Delft University of Technology, Civil Engineering and Geosciences, the Netherlands;3. VanVledder Consulting, Olst, the Netherlands;1. Ocean Engineering Division, CSIR-National Institute of Oceanography (Council of Scientific & Industrial Research), Dona Paula 403004, Goa, India;2. Information Services and Ocean Sciences Group, Indian National Centre for Ocean Information Services, Ministry of Earth Sciences, Hyderabad, India;3. Post Graduate Department of Marine Biology, Karnatak University, Karwar, India;1. Laboratori d’Enginyeria Marítima (LIM/UPC), Universitat Politècnica de Catalunya (UPC), Jordi Girona, 1-3, Ed. D1, 08034 Barcelona, Spain;2. Centre Internacional d’Investigació dels Recursos Costaners (CIIRC), Jordi Girona, 1-3, Ed. D1, 08034 Barcelona, Spain;1. Uluda? University, Department of Civil Engineering, Gorukle Campus, Bursa, Turkey;2. Delft University of Technology, Civil Engineering and Geosciences, The Netherlands;3. VanVledder Consulting, Olst, The Netherlands;1. College of Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, China;2. Shandong Province Key Laboratory of Ocean Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, China |
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| Abstract: | This study aims to present an evaluation and implementation of a high-resolution SWAN wind wave hindcast model forced by the CFSR wind fields in the west Mediterranean basin, taking into account the recent developments in wave modelling as the new source terms package ST6. For this purpose, the SWAN model was calibrated based on one-year wave observations of Azeffoune buoy (Algerian coast) and validated against eleven wave buoys measurements through the West Mediterranean basin. For the calibration process, we focused on the whitecapping dissipation coefficient Cds and on the exponential wind wave growth and whitecapping dissipation source terms. The statistical error analysis of the calibration results led to conclude that the SWAN model calibration corrected the underestimation of the significant wave height hindcasts in the default mode and improved its accuracy in the West Mediterranean basin. The exponential wind wave growth of Komen et al (1984) and the whitecapping dissipation source terms of Janssen (1991) with Cds = 1.0 have been thus recommended for the western Mediterranean basin. The comparison of the simulation results obtained using this calibrated parameters against eleven measurement buoys showed a high performance of the calibrated SWAN model with an average scatter index of 30% for the significant wave heights and 19% for the mean wave period. This calibrated SWAN model will constitute a practical wave hindcast model with high spatial resolution (?3 km) and high accuracy in the Algerian basin, which will allow us to proceed to a finer mesh size using the SWAN nested grid system in this area. |
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| Keywords: | SWAN Whitecapping Wave growth ST6 Mediterranean sea Algerian basin |
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