Ocean ModellingPub Date : 2025-05-02DOI: 10.1016/j.ocemod.2025.102557
Qi Lou , Changmao Wu , Changming Dong , Xingru Feng , Yuanyuan Xia , Li Liu , Zhengwei Xu , Xu Gao , Meng Sun , Xunqiang Yin
{"title":"APPLE-MASNUM: Accelerating parallel processing for lightweight expansion of MASNUM on a single multi-GPU node","authors":"Qi Lou , Changmao Wu , Changming Dong , Xingru Feng , Yuanyuan Xia , Li Liu , Zhengwei Xu , Xu Gao , Meng Sun , Xunqiang Yin","doi":"10.1016/j.ocemod.2025.102557","DOIUrl":"10.1016/j.ocemod.2025.102557","url":null,"abstract":"<div><div>The Marine Science and Numerical Modeling (MASNUM) system, developed for oceanic wave forecasting, play an important role in marine disaster prevention and maritime activities. However, its application is hampered by the requirement of large computing resources. To overcome these barriers, we have implemented an accelerating parallel processing for lightweight expansion of MASNUM (APPLE-MASNUM) on a single compute node with multiple GPUs. In initiating our approach, the mathematical-physics equations of the MASNUM system are thoroughly analyzed to pinpoint the primary computational bottlenecks. This study then transforms MASNUM from a multi-process MPI program into a preliminary GPU-compatible algorithms. Subsequently, the paper proposes an optimization strategy for two-dimensional four-point stencil computations. Following this, an optimization method for overlapping computation with communication is introduced. Finally, a refined data layout scheme tailored for GPUs is designed and implemented. Three numerical experiments with five-day wave forecasts demonstrated that compared to single-core MASNUM, the acceleration ratios of the framework presented in this study are 49.29-fold, 62.58-fold, and 65.74-fold, respectively. This considerable performance boost highlights the efficiency of the lightweight APPLE-MASNUM framework introduced in this research. This signifies the first implementation and optimization of the MASNUM model on a GPU-based heterogeneous platform.</div></div>","PeriodicalId":19457,"journal":{"name":"Ocean Modelling","volume":"196 ","pages":"Article 102557"},"PeriodicalIF":3.1,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143911537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ocean ModellingPub Date : 2025-04-30DOI: 10.1016/j.ocemod.2025.102555
Hao Yan , Zhan Wang , Chunxin Yuan , Yankun Gong , Xueen Chen
{"title":"Oblique interactions of mode-1 and mode-2 internal solitary waves in the presence of variable topography","authors":"Hao Yan , Zhan Wang , Chunxin Yuan , Yankun Gong , Xueen Chen","doi":"10.1016/j.ocemod.2025.102555","DOIUrl":"10.1016/j.ocemod.2025.102555","url":null,"abstract":"<div><div>Oblique interactions between internal solitary waves (ISWs) are frequently observed in oceanic environments. However, interactions involving different vertical modes, particularly between the most common mode-1 and mode-2 ISWs, remain poorly understood. To address this gap in knowledge, this study investigates the oblique interactions between mode-1 and mode-2 ISWs using a three-dimensional, high-resolution MITgcm ocean model. We consider three scenarios involving initial idealized V-shaped ISWs in a continuously stratified environment. The results show that interactions between two mode-1 ISWs over flat bottom topography align well with theoretical predictions. In contrast, interactions between two mode-2 ISWs demonstrate stronger attenuation due to potential instabilities arising from their complex vertical structures. When examining interactions between one mode-1 ISW and one mode-2 ISW, the differing phase speeds prevent the formation of Mach stems, resulting in non-resonant, refraction-like patterns. However, in the presence of a submarine cliff, where the phase speeds of these two modes become comparable, the interactions showed Mach stem-like features, along with energy transfer from mode-1 to mode-2 ISWs. Additionally, the presence of shoaling topography can lead to the emergence of mode-3 ISWs and polarity reversals.</div></div>","PeriodicalId":19457,"journal":{"name":"Ocean Modelling","volume":"196 ","pages":"Article 102555"},"PeriodicalIF":3.1,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143898471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High frequency radar observing system simulation experiment in the Western Mediterranean Sea. A Lagrangian assessment approach","authors":"Jaime Hernández-Lasheras , Alejandro Orfila , Alex Santana , Ismael Hernández-Carrasco , Baptiste Mourre","doi":"10.1016/j.ocemod.2025.102553","DOIUrl":"10.1016/j.ocemod.2025.102553","url":null,"abstract":"<div><div>The potential impact of the inclusion of new antenas in a HFR system is evaluated through an Observing System Simulation Experiment (OSSE) in the Ibiza Channel (Western Mediterranean Sea). Two different configurations of the same model are used: (i) a Nature Run considered as the real ocean state, is used to generate pseudo-observations, and (ii) a Control Run , where the pseudo-observations are assimilated. The OSSE is first validated by comparison against a previous Observing System Experiment (OSE). The impact of the new antennas for forecasting surface currents is evaluated in two different periods with different levels of agreement between NR and CR. The HFR expansion is found to contribute to significantly correct the circulation patterns in the Channel, leading to surface meridional velocity error reductions up to 19%. The improvement on surface transport in the area is analyzed in the Lagrangian framework, taking advantage of the full ocean state knowledge given by the OSSE. Results show that DA can help to better represent the Lagrangian Coherent Structures present in the NR.</div></div>","PeriodicalId":19457,"journal":{"name":"Ocean Modelling","volume":"196 ","pages":"Article 102553"},"PeriodicalIF":3.1,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ocean ModellingPub Date : 2025-04-26DOI: 10.1016/j.ocemod.2025.102548
Xingchuan Liu , Fei Yu , Zifei Chen , Feng Nan , Guangcheng Si , Xinyuan Diao , Qiang Ren , Jianfeng Wang
{"title":"Upper ocean responses to three sequential tropical cyclones in the stratified yellow sea during summer 2020","authors":"Xingchuan Liu , Fei Yu , Zifei Chen , Feng Nan , Guangcheng Si , Xinyuan Diao , Qiang Ren , Jianfeng Wang","doi":"10.1016/j.ocemod.2025.102548","DOIUrl":"10.1016/j.ocemod.2025.102548","url":null,"abstract":"<div><div>Three sequential tropical cyclones (TCs), Bavi, Maysak, and Haishen, passed over the Yellow Sea (YS) during summer 2020, separated by intervals of seven and five days. Focusing on this unique synoptic event, this study investigated the corresponding sea surface temperatures (SSTs) variations and the underlying hydrodynamic mechanisms using numerical simulations and satellite and in-situ observations. Notable SST decreases occurred in the eastern YS following each TC due to intense vertical mixing, with Bavi causing the strongest cooling due to its intensity and the undisturbed ocean stratification. Subsequently, despite similar weather conditions, Maysak induced almost twice as much surface cooling as Haishen. Upper ocean salinity generally increased in the eastern YS under strong mixing which override the freshening effect of precipitation. By conducting TC vortex removal experiments, we demonstrated that the low SSTs following Maysak and Haishen were primarily due to cold water entrained into the upper layer left by Bavi. Surface cooling caused by Maysak was intensified by Bavi's prior influence, whereas that caused by Haishen was weakened by both Bavi and Maysak's influence. This was because rapid SST rewarming after Bavi created a high pre-TC SST for Maysak; however, rewarming only occurred in the thin surface layer, leaving the water below still cold. For Haishen, the pre-TC SST remained low and the mixed layer was deeper, resulting in much weaker surface cooling despite its intensity being comparable to Maysak. This study enhances our understanding of the responses of stratified shelf waters to sequential TCs.</div></div>","PeriodicalId":19457,"journal":{"name":"Ocean Modelling","volume":"196 ","pages":"Article 102548"},"PeriodicalIF":3.1,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143895121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ocean ModellingPub Date : 2025-04-25DOI: 10.1016/j.ocemod.2025.102552
Guillermo Martín-Llanes, Alejandro López-Ruiz
{"title":"On the assessment of channel deepening impacts in micro-meso tidal estuaries: A systematic analysis","authors":"Guillermo Martín-Llanes, Alejandro López-Ruiz","doi":"10.1016/j.ocemod.2025.102552","DOIUrl":"10.1016/j.ocemod.2025.102552","url":null,"abstract":"<div><div>The need for efficient maritime transportation in estuaries has led to the development of diverse dredging strategies to accommodate vessels with deep drafts. Most recent studies assessing the environmental impacts of channel deepening use advanced, tailored models to simulate the long-term response to historical bathymetric changes in estuaries worldwide. However, these models are often time-consuming and highly specific to local conditions, limiting the broader applicability of their results. In addition, a common limitation is the significant time gap between the bathymetric data used, often exceeding 100 years. This makes it challenging to quantify the effects of isolated deepening operations, which is essential for understanding the influence of human intervention on estuarine dynamics. To overcome this limitation while ensuring efficient and adaptable modelling, this paper presents a three-dimensional idealised model (Delft3D) to quantify the short-term, e.g., weeks, hydrodynamic and salinity response to dredging operations in micro-meso tidal, well-mixed estuaries. Implications on channel operativity are also discussed. The numerical experiments examine variations in both channel depth and dredging length. Key findings suggest that dredging length is critical in the estuarine response. Specifically, dredging length has a greater influence on tidal amplification than channel depth. Changes in the flow structure are primarily driven by changes in the barotropic pressure gradient and bed shear forces, which vary spatially along the estuary, defining three distinct regions of behaviour. In addition, salt intrusion increases linearly with channel depth and becomes particularly sensitive to dredging length in shorter operations. Regarding basin management, results reveal that landward operativity is compromised by dredging in the lower river.</div></div>","PeriodicalId":19457,"journal":{"name":"Ocean Modelling","volume":"196 ","pages":"Article 102552"},"PeriodicalIF":3.1,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ocean ModellingPub Date : 2025-04-25DOI: 10.1016/j.ocemod.2025.102559
Yang Liu , Peng Lu , Jiechen Zhao , Miao Yu , Bin Cheng , Lei Wang , Fei Xie , Puzhen Huo , Xuewei Li , Zhijun Li
{"title":"Evaluating single-column thermodynamic sea ice models for simulating landfast ice in Prydz Bay, East Antarctica","authors":"Yang Liu , Peng Lu , Jiechen Zhao , Miao Yu , Bin Cheng , Lei Wang , Fei Xie , Puzhen Huo , Xuewei Li , Zhijun Li","doi":"10.1016/j.ocemod.2025.102559","DOIUrl":"10.1016/j.ocemod.2025.102559","url":null,"abstract":"<div><div>To evaluate the contributions of different physical processes to sea ice thermodynamic simulation uncertainties, four single-column models were employed to simulate the growth and melting of landfast sea ice: high-resolution snow/ice model (HIGHTSI), energy-conserving model (BL99), mushy layer model (MUSHY), and 0-layer model (0LAYER). These simulations were forced by the observations obtained at Zhongshan Station and validated against in situ measurements collected between July and December 2015 in Prydz Bay, Antarctica. The results indicate that all the models exhibit significant biases in terms of the simulated snow depth because snow redistribution by wind is neglected, leading to errors in ice thickness simulations of more than 5 %. Shortwave radiation absorption parameterizations and sublimation processes crucially determine the onset timing of snowmelt. Among all the models, HIGHTSI results in the smallest ice thickness bias from the observations (0.04 m), which is attributed primarily to differences in snow thermal conductivity. This single factor causes BL99, MUSHY, and 0LAYER to simulate 7.3 % thinner ice than does HIGHTSI. Models incorporating coupled growth enthalpy and salinity (e.g., BL99) showed high sensitivity to initial salinity profiles. This study quantifies the relative importance of various physical processes in sea ice thermodynamics through comparing numerical simulations with in situ observations. The results clarify the feasibility of different models and provide solid references for model optimization in the future.</div></div>","PeriodicalId":19457,"journal":{"name":"Ocean Modelling","volume":"196 ","pages":"Article 102559"},"PeriodicalIF":3.1,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ocean ModellingPub Date : 2025-04-24DOI: 10.1016/j.ocemod.2025.102558
Penghao Wang , Kefeng Mao , Xi Chen , Ming Li , Yuhang Zhu , Hongchen Li , Jiahao Wang , Kefeng Liu , Yangjun Wang
{"title":"Three-dimensional structure reconstruction of ocean mesoscale eddies based on physical process modeling and data-driven machine learning","authors":"Penghao Wang , Kefeng Mao , Xi Chen , Ming Li , Yuhang Zhu , Hongchen Li , Jiahao Wang , Kefeng Liu , Yangjun Wang","doi":"10.1016/j.ocemod.2025.102558","DOIUrl":"10.1016/j.ocemod.2025.102558","url":null,"abstract":"<div><div>To address the challenge of obtaining ocean mesoscale eddies' refined three-dimensional (3D) structure, we propose a novel 3D structure reconstruction model that combines physical process models with data-driven machine learning. First, based on the universal structure of mesoscale eddies, the 3D density structure of eddies is reconstructed using satellite observations and individual Argo profile observations. These eddy density profiles, along with eddy elements (polarity, eddy center, and radius) and sea surface elements (temperature, salinity, and dynamic height), serve as input data to construct a data-driven machine learning algorithm, which can reconstruct the 3D temperature and salinity structure of the eddies. Using observations of oceanic mesoscale cyclonic and anticyclonic eddies in the northwest Pacific Ocean, we demonstrate that both types of eddies' reconstructed temperature, salinity, and density structures align well with the observations. The root mean square errors (RMSEs) for the anticyclonic eddy are 0.361 °C, 0.0271 PSU, and 0.0570 kg/m<sup>3</sup>, and for the cyclonic eddy, they are 0.372 °C, 0.0904 PSU, and 0.144 kg/m<sup>3</sup>, respectively. The correlation coefficients exceed 0.98. Compared to multi-source fusion data (ARMOR 3D) and dynamical statistics data (MODAS), the reconstructed 3D structure from this study shows the closest alignment with observed structures. Furthermore, incorporating physical process model inputs significantly enhances the accuracy of the data-driven machine learning reconstruction of the eddy thermohaline structure, reducing the RMSEs by >40 % and 60 %, respectively.</div></div>","PeriodicalId":19457,"journal":{"name":"Ocean Modelling","volume":"196 ","pages":"Article 102558"},"PeriodicalIF":3.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ocean ModellingPub Date : 2025-04-22DOI: 10.1016/j.ocemod.2025.102550
Jose R. Miranda , Olmo Zavala-Romero , Luna Hiron , Eric P. Chassignet , Bulusu Subrahmanyam , Thomas Meunier , Robert W. Helber , Enric Pallas-Sanz , Miguel Tenreiro
{"title":"Neural Synthetic Profiles from Remote Sensing and Observations (NeSPReSO) — Reconstructing temperature and salinity fields in the Gulf of Mexico","authors":"Jose R. Miranda , Olmo Zavala-Romero , Luna Hiron , Eric P. Chassignet , Bulusu Subrahmanyam , Thomas Meunier , Robert W. Helber , Enric Pallas-Sanz , Miguel Tenreiro","doi":"10.1016/j.ocemod.2025.102550","DOIUrl":"10.1016/j.ocemod.2025.102550","url":null,"abstract":"<div><div>Accurate circulation modeling in the Gulf of Mexico (GoM) is hampered by the limited availability of in-situ subsurface data, leading to inaccuracies in subsurface representations. These inaccuracies diminish the reliability of ocean models and constrain the duration of dependable forecasts. This study introduces NeSPReSO (Neural Synthetic Profiles from Remote Sensing and Observations), a data-driven method to efficiently and accurately estimate subsurface temperature and salinity profiles using satellite-derived surface data. This provides an alternative to conventional synthetic data generation techniques.</div><div>Principal Component Analysis (PCA) is applied to extract the main features of temperature and salinity profiles of an Argo dataset. Then, a neural network is trained to predict these principal features using inputs such as time, location, and satellite-derived absolute dynamic topography alongside sea surface temperature and salinity. The model, evaluated using additional Argo profiles and glider data collected in the Gulf of Mexico, over-performs other traditional synthetic data generation methods, such as the Gravest Empirical Modes (GEM), Multiple Linear Regression (MLR) and Improved Synthetic Ocean Profile (ISOP), in terms of root mean square error and bias. Our findings indicate that our method effectively captures the main variations of subsurface fields, and that synthetic profiles generated by the model align well with actual observations, accurately capturing key features such as thermoclines, haloclines, and temperature-salinity structure of the region. This new method will be implemented in GoM data assimilative models and is expected to improve the accuracy of modeled subsurface currents.</div></div>","PeriodicalId":19457,"journal":{"name":"Ocean Modelling","volume":"196 ","pages":"Article 102550"},"PeriodicalIF":3.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ocean ModellingPub Date : 2025-04-18DOI: 10.1016/j.ocemod.2025.102556
Chuanyin Wang , Zhiyu Liu , Hongyang Lin , Cesar Rocha , Qinghua Yang , Dake Chen , Junbin Gong
{"title":"Disentangling wavy and vortical motions in concurrent snapshots of the sea surface height and velocity","authors":"Chuanyin Wang , Zhiyu Liu , Hongyang Lin , Cesar Rocha , Qinghua Yang , Dake Chen , Junbin Gong","doi":"10.1016/j.ocemod.2025.102556","DOIUrl":"10.1016/j.ocemod.2025.102556","url":null,"abstract":"<div><div>Wide-swath satellite missions, such as Surface Water and Ocean Topography (SWOT) and Ocean Dynamics and Sea Exchanges with the Atmosphere (ODYSEA), will provide quasi-concurrent observations of the two-dimensional sea surface height and velocity. Thanks to their high spatial resolution, the spatial features of both vortical and wavy oceanic motions are expected to be captured by these observations. A natural question is whether one can disentangle vortical and wavy motions in these snapshot observations. This issue has attracted some efforts, but crucial progress remains to be made. Here, assuming that only a single concurrent snapshot of the sea surface height and velocity is available, we pursue a dynamical approach for disentangling vortical and wavy motions. This is realized by noting that wavy motions do not induce potential vorticity anomalies. A proof-of-concept application using an output of a realistic high-resolution numerical simulation suggests that the proposed approach is simple and efficient, and is particularly useful for separating wavy and vortical motions in observations by wide-swath satellite missions.</div></div>","PeriodicalId":19457,"journal":{"name":"Ocean Modelling","volume":"196 ","pages":"Article 102556"},"PeriodicalIF":3.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ocean ModellingPub Date : 2025-04-16DOI: 10.1016/j.ocemod.2025.102544
Nelson Violante-Carvalho , Thiago de Paula , Leandro Calado , Felipe Marques dos Santos , Luiz Mariano Carvalho , Andre Luiz Cordeiro dos Santos , Wilton Z. Arruda , Leandro Farina
{"title":"Current effects on wind generated waves near an Ocean Eddy Dipole","authors":"Nelson Violante-Carvalho , Thiago de Paula , Leandro Calado , Felipe Marques dos Santos , Luiz Mariano Carvalho , Andre Luiz Cordeiro dos Santos , Wilton Z. Arruda , Leandro Farina","doi":"10.1016/j.ocemod.2025.102544","DOIUrl":"10.1016/j.ocemod.2025.102544","url":null,"abstract":"<div><div>Ocean eddy dipoles are among the most common mesoscale features and may be ubiquitous across the global oceans. However, wave–current interactions in their proximity have not been extensively studied. Here we examine the impact of surface currents on the wave field near an ocean eddy dipole. Using the WW3 wave model, we conducted idealized numerical simulations to assess the influence of different configurations on the spatial variability of Significant Wave Height (<span><math><msub><mrow><mi>H</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span>). Additionally, a two-month hindcast of a strong dipole event in the Southwestern Atlantic Ocean was performed using three distinct surface current products: SSalto/Duacs, HYCOM NCODA and GlobCurrent. Among these, HYCOM, which incorporates ageostrophic effects, provided a more detailed representation of oceanic energy compared to GlobCurrent and SSalto/Duacs, which primarily reflect geostrophic components. The hindcast assessment employed denoised altimeter-derived <span><math><msub><mrow><mi>H</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span> data, with a spatial resolution of approximately 6 km. The greatest increase in wave energy occurs in the region between the peak values of positive and negative vorticity, where the opposing surface currents reach their maximum intensity. Therefore, dipoles act as converging lenses for surface waves, channeling their refraction toward the central jet. Despite its poorer spatial and temporal resolutions, SSalto-Duacs surface current data provides more reliable <span><math><msub><mrow><mi>H</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span> fields, in the study region where geostrophic dynamics are expected to be significant or even dominant. Both Absolute Dynamic Topography derived surface current inputs produce comparable effects on the wave field, with the inclusion of the Ekman component yielding no substantial enhancement. HYCOM captures a broader range of dynamical processes, essential for accurately representing the total energy, though discrepancies with SSalto/Duacs data may arise from assimilation inaccuracies and model limitations. While gridded altimetry may underestimate total current components during dipole events, it offers precise insights into their positioning and evolution, useful for specific event analysis and near real-time forecasting for marine safety.</div></div>","PeriodicalId":19457,"journal":{"name":"Ocean Modelling","volume":"196 ","pages":"Article 102544"},"PeriodicalIF":3.1,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}