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Ensemble forecasting on wave modelling

Fan, Yang-Ming, Pan, Shunqi, Chen, Jia-Ming and Kao, Chia Chuen 2011. Ensemble forecasting on wave modelling. Presented at: 10th International Conference on the Mediterranean Coastal Environment, Rhodes, Greece, 25-29 October 2011. MEDCOAST 11: Proceedings of the Tenth International Conference on the Mediterranean Coastal Environment. Mugla: MEDCOAST, pp. 809-820.

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The purpose of this study is to quantitatively assess the effect of uncertainties on the wave forecasts using the ensemble approach. The ensemble method is an effective approach to assess the effect of the model uncertainty by producing not only one, but several forecasts. The ensemble wave modelling system was applied to the Taiwan sea area. There are four different operational atmospheric models that provide predictions of wind at 10 m height above sea surface. The simulated wave of WAVEWATCH III drove from NCEP, JMA, NFS, and WRF wind fields. From the simulated wave heights of all ensemble members, it can be clearly seen that the uncertainties from the atmospheric predictions have significantly affected the predicted hydrodynamic results. A further ensemble statistics, including the ensemble mean, and mean ± standard deviation. The ensemble statistics that the accuracy of the waves can be considerably improved by the ensemble mean + standard deviation.

Item Type: Conference or Workshop Item (Paper)
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TC Hydraulic engineering. Ocean engineering
Publisher: MEDCOAST
ISBN: 9786058899063
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Last Modified: 04 Jun 2017 05:48

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