The Controlled Four-Parameter Method for cross-assignment of directional wave systems

dos Santos, Andre Luiz Cordeiro; Dos Santos, Felipe Marques ORCID: https://orcid.org/0000-0003-0699-7254; Violante-Carvalho, Nelson ORCID: https://orcid.org/0000-0002-9980-971X; Carvalho, Luiz Mariano ORCID: https://orcid.org/0000-0002-4829-2917; Venceslau, Helder Manoel ORCID: https://orcid.org/0000-0002-9442-903X. 2025 The Controlled Four-Parameter Method for cross-assignment of directional wave systems. Ocean Modelling, 197, 102584. 1, pp. 10.1016/j.ocemod.2025.102584

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Official URL: https://doi.org/10.1016/j.ocemod.2025.102584

Abstract/Summary

Cross-assignment of directional wave spectra is a critical task in wave data assimilation. Traditionally, most methods rely on two-parameter spectral distances or energy ranking approaches, which often fail to account for the complexities of the wave field, leading to inaccuracies. To address these limitations, we propose the Controlled Four-Parameter Method (C4PM), which independently considers four integrated wave parameters. This method enhances the accuracy and robustness of cross-assignment by offering flexibility in assigning weights and controls to each wave parameter. We compare C4PM with a two-parameter spectral distance method using data from two buoys moored 13 km apart in deep water. Although both methods produce negligible bias and high correlation, C4PM demonstrates superior performance by preventing the occurrence of outliers and achieving a lower root mean square error across all parameters. The negligible computational cost and customization position C4PM as a potential alternative for wave data assimilation, possibly improving the reliability of forecasts and model validations.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1016/j.ocemod.2025.102584
ISSN:	14635003
Additional Keywords:	Cross-assignment of wave spectra partitions, Wind-generated waves, Wave spectra assessment, Wave spectra assimilation
Date made live:	03 Jul 2025 21:39 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/539781

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1016/j.ocemod.2025.102584

ISSN:

14635003

Additional Keywords:

Cross-assignment of wave spectra partitions, Wind-generated waves, Wave spectra assessment, Wave spectra assimilation

Date made live:

03 Jul 2025 21:39 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/539781