2010, English, Article, Journal or magazine article edition: Semi-empirical dissipation source functions for ocean waves: part I: definition, calibration and validation Ardhuin, Fabrice; Rogers, Erick; Babanin, Alexander V.; ...

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Physical Description
  • journal article
Published
  • American Meteorological Society, 2010
Language
  • English

Edition details

Title
  • Semi-empirical dissipation source functions for ocean waves: part I: definition, calibration and validation
Author
  • Ardhuin, Fabrice
  • Rogers, Erick
  • Babanin, Alexander V.
  • Filipot, Jean-Francois
  • Magne, Rudy
  • Roland, Aaron
  • van der Westhuysen, Andre
  • Queffeulou, Pierre
  • Lefevre, Jean-Michel
  • Aouf, Lofti
  • Collard, Fabrice
Other Contributors
  • Swinburne University of Technology
Published
  • American Meteorological Society, 2010
Physical Description
  • journal article
Part Of
  • Journal of Physical Oceanography, Vol. 40, no. 9 (Sep 2010), pp. 1917-1941
Summary
  • New parameterizations for the spectral dissipation of wind-generated waves are proposed. The rates of dissipation have no predetermined spectral shapes and are functions of the wave spectrum and wind speed and direction, in a way consistent with observations of wave breaking and swell dissipation properties. Namely, the swell dissipation is nonlinear and proportional to the swell steepness, and dissipation due to wave breaking is nonzero only when a nondimensional spectrum exceeds the threshold at which waves are observed to start breaking. An additional source of short-wave dissipation is introduced to represent the dissipation of short waves due to longer breaking waves. A reduction of the wind-wave generation of short waves is meant to account for the momentum flux absorbed by longer waves. These parameterizations are combined and calibrated with the discrete interaction approximation for the nonlinear interactions. Parameters are adjusted to reproduce observed shapes of directional wave spectra, and the variability of spectral moments with wind speed and wave height. The wave energy balance is verified in a wide range of conditions and scales, from the global ocean to coastal settings. Wave height, peak and mean periods, and spectral data are validated using in situ and remote sensing data. Some systematic defects are still present, but, overall, the parameterizations probably yield the most accurate estimates of wave parameters to date. Perspectives for further improvement are also given.
Terms of Use
  • Copyright © 2010 American Meteorological Society. The published version is reproduced in accordance with the copyright policy of the publisher.
Language
  • English
Related Resource
Identifier
  • hdl.handle.net/​1959.3/​94456

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