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Assimilation of HF radar data into the SWAN wave model

Siddons, L.A., Wyatt, L.R. and Wolf, J. (2009) Assimilation of HF radar data into the SWAN wave model. Journal of Marine Systems, 77 (3). pp. 312-324. ISSN 0924-7963

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Abstract

Data assimilation is a method used for optimally combining information to improve forecasting and model parameters. Three data assimilation algorithms are investigated and used for assimilating HF radar data into the SWAN wave model. The schemes under consideration are the Ensemble Kalman Filter, Ensemble Optimal Interpolation and a Three-Dimensional Variational scheme. Two approaches for updating the ocean wave spectrum are considered which consist of describing the spectrum using integral wave parameters of the whole spectrum and wave parameters within various frequency bands. The results show improvement in the wave parameters at the buoy location for the 3DVAR and ENS-OI scheme. The EnKF only shows good performance in one of the considered runs which leads to a conclusion that the methods used for calculating the errors for the EnKF scheme need further analysis.

Item Type: Article
Keywords: Data assimilation; HF radar; SWAN; Wave modelling
Academic Units: The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield)
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Depositing User: Mrs Megan Hobbs
Date Deposited: 23 Mar 2010 15:51
Last Modified: 07 Jun 2010 11:09
Published Version: http://dx.doi.org/10.1016/j.jmarsys.2007.12.017
Status: Published
Publisher: Elsevier
Identification Number: 10.1016/j.jmarsys.2007.12.017
URI: http://eprints.whiterose.ac.uk/id/eprint/10561

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