Publications des scientifiques de l'IRD

Stopa J. E., Ardhuin Fabrice, Babanin A., Zieger S. (2016). Comparison and validation of physical wave parameterizations in spectral wave models. Ocean Modelling, 103, p. 2-17. ISSN 1463-5003.

Titre du document
Comparison and validation of physical wave parameterizations in spectral wave models
Année de publication
2016
Type de document
Article référencé dans le Web of Science WOS:000377391800002
Auteurs
Stopa J. E., Ardhuin Fabrice, Babanin A., Zieger S.
Source
Ocean Modelling, 2016, 103, p. 2-17 ISSN 1463-5003
Recent developments in the physical parameterizations available in spectral wave models have already been validated, but there is little information on their relative performance especially with focus on the higher order spectral moments and wave partitions. This study concentrates on documenting their strengths and limitations using satellite measurements, buoy spectra, and a comparison between the different models. It is confirmed that all models perform well in terms of significant wave heights; however higher-order moments have larger errors. The partition wave quantities perform well in terms of direction and frequency but the magnitude and directional spread typically have larger discrepancies. The high-frequency tail is examined through the mean square slope using satellites and buoys. From this analysis it is clear that some models behave better than the others, suggesting their parameterizations match the physical processes reasonably well. However none of the models are entirely satisfactory, pointing to poorly constrained parameterizations or missing physical processes. The major space-time differences between the models are related to the swell field which stresses the importance of describing its evolution. An example swell field confirms the wave heights can be notably different between model configurations while the directional distributions remain similar. It is clear that all models have difficulty describing the directional spread. Therefore, knowledge of the source term directional distributions is paramount to improve the wave model physics in the future.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Limnologie physique / Océanographie physique [032]
Identifiant IRD
PAR00014806
Contact