Implementing Astronomical Potential and Wavelet Analysis to Improve Regional Tide Modeling
This study aimed to accurately simulate the main tidal characteristics in a regional domain featuring four open boundaries, with a primary focus on baroclinic tides. Such understanding is crucial for improving the representation of oceanic energy transfer and mixing processes in numerical models. To...
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MDPI AG
2025-06-01
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| author | Jihene Abdennadher Moncef Boukthir |
| author_facet | Jihene Abdennadher Moncef Boukthir |
| author_sort | Jihene Abdennadher |
| collection | DOAJ |
| description | This study aimed to accurately simulate the main tidal characteristics in a regional domain featuring four open boundaries, with a primary focus on baroclinic tides. Such understanding is crucial for improving the representation of oceanic energy transfer and mixing processes in numerical models. To this end, the astronomical potential, load tide effects, and a wavelet-based analysis method were implemented in the three-dimensional ROMS model. The inclusion of the astronomical tidal and load tide aimed to enhance the accuracy of tidal simulations, while the wavelet method was employed to analyze the generation and propagation of internal tides from their source regions and to characterize their main features. Twin simulations with and without astronomical potential forcing were conducted to evaluate its influence on tidal elevations and currents. Model performance was assessed through comparison with tide gauge observations. Incorporating the potential forcing improves simulation accuracy, as the model fields successfully reproduced the main features of the barotropic tide and showed good agreement with observed amplitude and phase data. A complex principal component analysis was then applied to a matrix of normalized wavelet coefficients derived from the enhanced model outputs, enabling the characterization of horizontal modal propagation and vertical mode decomposition of both <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>M</mi><mn>2</mn></msub></semantics></math></inline-formula> and nonlinear <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>M</mi><mn>4</mn></msub></semantics></math></inline-formula> internal tides. |
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| institution | Kabale University |
| issn | 2079-3197 |
| language | English |
| publishDate | 2025-06-01 |
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| spelling | doaj-art-e7c7f49bb72e4dadafcf52c8590634202025-08-20T03:26:11ZengMDPI AGComputation2079-31972025-06-0113614510.3390/computation13060145Implementing Astronomical Potential and Wavelet Analysis to Improve Regional Tide ModelingJihene Abdennadher0Moncef Boukthir1Materials and Fluids Laboratory LR19ES03, IPEIT—University of Tunis, 2 Rue Jawaher Lel Nehru, Montfleury 1008, TunisiaMaterials and Fluids Laboratory LR19ES03, IPEIT—University of Tunis, 2 Rue Jawaher Lel Nehru, Montfleury 1008, TunisiaThis study aimed to accurately simulate the main tidal characteristics in a regional domain featuring four open boundaries, with a primary focus on baroclinic tides. Such understanding is crucial for improving the representation of oceanic energy transfer and mixing processes in numerical models. To this end, the astronomical potential, load tide effects, and a wavelet-based analysis method were implemented in the three-dimensional ROMS model. The inclusion of the astronomical tidal and load tide aimed to enhance the accuracy of tidal simulations, while the wavelet method was employed to analyze the generation and propagation of internal tides from their source regions and to characterize their main features. Twin simulations with and without astronomical potential forcing were conducted to evaluate its influence on tidal elevations and currents. Model performance was assessed through comparison with tide gauge observations. Incorporating the potential forcing improves simulation accuracy, as the model fields successfully reproduced the main features of the barotropic tide and showed good agreement with observed amplitude and phase data. A complex principal component analysis was then applied to a matrix of normalized wavelet coefficients derived from the enhanced model outputs, enabling the characterization of horizontal modal propagation and vertical mode decomposition of both <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>M</mi><mn>2</mn></msub></semantics></math></inline-formula> and nonlinear <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>M</mi><mn>4</mn></msub></semantics></math></inline-formula> internal tides.https://www.mdpi.com/2079-3197/13/6/145numerical simulationtidesastronomical potentialwavelet decomposition |
| spellingShingle | Jihene Abdennadher Moncef Boukthir Implementing Astronomical Potential and Wavelet Analysis to Improve Regional Tide Modeling Computation numerical simulation tides astronomical potential wavelet decomposition |
| title | Implementing Astronomical Potential and Wavelet Analysis to Improve Regional Tide Modeling |
| title_full | Implementing Astronomical Potential and Wavelet Analysis to Improve Regional Tide Modeling |
| title_fullStr | Implementing Astronomical Potential and Wavelet Analysis to Improve Regional Tide Modeling |
| title_full_unstemmed | Implementing Astronomical Potential and Wavelet Analysis to Improve Regional Tide Modeling |
| title_short | Implementing Astronomical Potential and Wavelet Analysis to Improve Regional Tide Modeling |
| title_sort | implementing astronomical potential and wavelet analysis to improve regional tide modeling |
| topic | numerical simulation tides astronomical potential wavelet decomposition |
| url | https://www.mdpi.com/2079-3197/13/6/145 |
| work_keys_str_mv | AT jiheneabdennadher implementingastronomicalpotentialandwaveletanalysistoimproveregionaltidemodeling AT moncefboukthir implementingastronomicalpotentialandwaveletanalysistoimproveregionaltidemodeling |