Articles | Volume 16, issue 1
https://doi.org/10.5194/gmd-16-109-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-16-109-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Model description paper
| 
04 Jan 2023
Model description paper |
| 04 Jan 2023
| 04 Jan 2023
A nonhydrostatic oceanic regional model, ORCTM v1, for internal solitary wave simulation
Hao Huang
Frontier Science Center for Deep Ocean Multispheres and Earth System
(FDOMES) and Physical Oceanography Laboratory, Ocean University of China,
Qingdao, 266100, China
Pengyang Song
Frontier Science Center for Deep Ocean Multispheres and Earth System
(FDOMES) and Physical Oceanography Laboratory, Ocean University of China,
Qingdao, 266100, China
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), Bremerhaven, Germany
Shi Qiu
Frontier Science Center for Deep Ocean Multispheres and Earth System
(FDOMES) and Physical Oceanography Laboratory, Ocean University of China,
Qingdao, 266100, China
Jiaqi Guo
Frontier Science Center for Deep Ocean Multispheres and Earth System
(FDOMES) and Physical Oceanography Laboratory, Ocean University of China,
Qingdao, 266100, China
Xueen Chen
CORRESPONDING AUTHOR
Frontier Science Center for Deep Ocean Multispheres and Earth System
(FDOMES) and Physical Oceanography Laboratory, Ocean University of China,
Qingdao, 266100, China
Related authors
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Yankun Gong, Xueen Chen, Jiexin Xu, Zhiwu Chen, Qingyou He, Ruixiang Zhao, Xiao-Hua Zhu, and Shuqun Cai
Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2024-165, https://doi.org/10.5194/gmd-2024-165, 2024
Preprint under review for GMD
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A new internal solitary wave forecasting (ISW) model in the northern South China Sea (ISWFM-NSCS v2.0) improves ISW predictions by incorporating background currents and inhomogeneous stratifications. Additionally, viscosity and diffusivity coefficients are optimized to maintain stable stratifications, extending the forecasting period. Sensitivity experiments illustrate that ISWFM-NSCS v2.0 significantly enhances predictions of various wave properties.
Yugeng Chen, Pengyang Song, Xianyao Chen, and Gerrit Lohmann
Clim. Past, 20, 2001–2015, https://doi.org/10.5194/cp-20-2001-2024, https://doi.org/10.5194/cp-20-2001-2024, 2024
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Our study examines the Atlantic Meridional Overturning Circulation (AMOC) during the Last Glacial Maximum (LGM), a period with higher tidal dissipation. Despite increased tidal mixing, our model simulations show that the AMOC remained relatively shallow, consistent with paleoproxy data and resolving previous inconsistencies between proxy data and model simulations. This research highlights the importance of strong ocean stratification during the LGM and its interaction with tidal mixing.
Yankun Gong, Xueen Chen, Jiexin Xu, Jieshuo Xie, Zhiwu Chen, Yinghui He, and Shuqun Cai
Geosci. Model Dev., 16, 2851–2871, https://doi.org/10.5194/gmd-16-2851-2023, https://doi.org/10.5194/gmd-16-2851-2023, 2023
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Internal solitary waves (ISWs) play crucial roles in mass transport and ocean mixing in the northern South China Sea. Massive numerical investigations have been conducted in this region, but there was no systematic evaluation of a three-dimensional model about precisely simulating ISWs. Here, an ISW forecasting model is employed to evaluate the roles of resolution, tidal forcing and stratification in accurately reproducing wave properties via comparison to field and remote-sensing observations.
Pengyang Song, Dmitry Sidorenko, Patrick Scholz, Maik Thomas, and Gerrit Lohmann
Geosci. Model Dev., 16, 383–405, https://doi.org/10.5194/gmd-16-383-2023, https://doi.org/10.5194/gmd-16-383-2023, 2023
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Tides have essential effects on the ocean and climate. Most previous research applies parameterised tidal mixing to discuss their effects in models. By comparing the effect of a tidal mixing parameterisation and tidal forcing on the ocean state, we assess the advantages and disadvantages of the two methods. Our results show that tidal mixing in the North Pacific Ocean strongly affects the global thermohaline circulation. We also list some effects that are not considered in the parameterisation.
Zheen Zhang, Thomas Pohlmann, and Xueen Chen
Ocean Sci., 17, 393–409, https://doi.org/10.5194/os-17-393-2021, https://doi.org/10.5194/os-17-393-2021, 2021
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In this study, we found that the interannual subsurface temperature and salinity variability of the Bay of Bengal (BoB) shows a remarkable delayed correlation with the Indian Ocean Dipole mode. We employed a regional model and determined the contributions of the coastal Kelvin waves and the westward-moving Rossby waves to this correlation. An analysis of the salinity budget revealed that the advection terms dominate the subsurface salinity changes in the BoB.
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Axelle Gaffet, Xavier Bertin, Damien Sous, Héloïse Michaud, Aron Roland, and Emmanuel Cordier
Geosci. Model Dev., 18, 1929–1946, https://doi.org/10.5194/gmd-18-1929-2025, https://doi.org/10.5194/gmd-18-1929-2025, 2025
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This study presents a new global wave model that improves predictions of sea states in tropical areas by using a high-resolution grid and corrected wind fields. The model is validated globally with satellite data and nearshore using in situ data. The model allows for the first time direct comparisons with in situ data collected at 10–30 m water depth, which is very close to shore due to the steep slope usually surrounding volcanic islands.
Antoine Mathieu, Yeulwoo Kim, Tian-Jian Hsu, Cyrille Bonamy, and Julien Chauchat
Geosci. Model Dev., 18, 1561–1573, https://doi.org/10.5194/gmd-18-1561-2025, https://doi.org/10.5194/gmd-18-1561-2025, 2025
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Most of the tools available to model sediment transport do not account for complex physical mechanisms such as surface-wave-driven processes. In this study, a new model, sedInterFoam, allows us to reproduce numerically complex configurations in order to investigate coastal sediment transport applications dominated by surface waves and to gain insight into the complex physical processes associated with breaking waves and morphodynamics.
Zhaoru Zhang, Chuan Xie, Chuning Wang, Yuanjie Chen, Heng Hu, and Xiaoqiao Wang
Geosci. Model Dev., 18, 1375–1393, https://doi.org/10.5194/gmd-18-1375-2025, https://doi.org/10.5194/gmd-18-1375-2025, 2025
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A coupled fine-resolution ocean–ice model is developed for the Ross Sea and adjacent regions in Antarctica, a key area for the formation of global ocean bottom water, the Antarctic Bottom Water (AABW), which affects global ocean circulation. The model has a high skill level in simulating sea ice production driving the AABW source water formation and AABW properties when assessed against observations. A model experiment shows a significant impact of ice shelf melting on the AABW characteristics.
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Geosci. Model Dev., 18, 1189–1220, https://doi.org/10.5194/gmd-18-1189-2025, https://doi.org/10.5194/gmd-18-1189-2025, 2025
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Vertical mixing is an important process, for example, for tropical sea surface temperature, but cannot be resolved by ocean models. Comparisons of mixing schemes and settings have usually been done with a single model, sometimes yielding conflicting results. We systematically compare two widely used schemes with different parameter settings in two different ocean models and show that most effects from mixing scheme parameter changes are model-dependent.
Marko Rus, Hrvoje Mihanović, Matjaž Ličer, and Matej Kristan
Geosci. Model Dev., 18, 605–620, https://doi.org/10.5194/gmd-18-605-2025, https://doi.org/10.5194/gmd-18-605-2025, 2025
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HIDRA3 is a deep-learning model for predicting sea levels and storm surges, offering significant improvements over previous models and numerical simulations. It utilizes data from multiple tide gauges, enhancing predictions even with limited historical data and during sensor outages. With its advanced architecture, HIDRA3 outperforms current state-of-the-art models by achieving a mean absolute error of up to 15 % lower, proving effective for coastal flood forecasting under diverse conditions.
Isabel Jalón-Rojas, Damien Sous, and Vincent Marieu
Geosci. Model Dev., 18, 319–336, https://doi.org/10.5194/gmd-18-319-2025, https://doi.org/10.5194/gmd-18-319-2025, 2025
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This study presents a novel modeling approach for understanding microplastic transport in coastal waters. The model accurately replicates experimental data and reveals key transport mechanisms. The findings enhance our knowledge of how microplastics move in nearshore environments, aiding in coastal management and efforts to combat plastic pollution globally.
Greig Oldford, Tereza Jarníková, Villy Christensen, and Michael Dunphy
Geosci. Model Dev., 18, 211–237, https://doi.org/10.5194/gmd-18-211-2025, https://doi.org/10.5194/gmd-18-211-2025, 2025
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We developed a 3D ocean model called the Hindcast of the Salish Sea (HOTSSea v1) that recreates physical conditions throughout the Salish Sea from 1980 to 2018. It was not clear that acceptable accuracy could be achieved because of computational and data limitations, but the model's predictions agreed well with observations. When we used the model to examine ocean temperature trends in areas that lack observations, it indicated that some seasons and areas are warming faster than others.
Kyoko Ohashi, Arnaud Laurent, Christoph Renkl, Jinyu Sheng, Katja Fennel, and Eric Oliver
Geosci. Model Dev., 17, 8697–8733, https://doi.org/10.5194/gmd-17-8697-2024, https://doi.org/10.5194/gmd-17-8697-2024, 2024
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We developed a modelling system of the northwest Atlantic Ocean that simulates the currents, temperature, salinity, and parts of the biochemical cycle of the ocean, as well as sea ice. The system combines advanced, open-source models and can be used to study, for example, the ocean capture of atmospheric carbon dioxide, which is a key process in the global climate. The system produces realistic results, and we use it to investigate the roles of tides and sea ice in the northwest Atlantic Ocean.
Eui-Jong Kang, Byung-Ju Sohn, Sang-Woo Kim, Wonho Kim, Young-Cheol Kwon, Seung-Bum Kim, Hyoung-Wook Chun, and Chao Liu
Geosci. Model Dev., 17, 8553–8568, https://doi.org/10.5194/gmd-17-8553-2024, https://doi.org/10.5194/gmd-17-8553-2024, 2024
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Sea surface temperature (SST) is vital in climate, weather, and ocean sciences because it influences air–sea interactions. Errors in the ECMWF model's scheme for predicting ocean skin temperature prompted a revision of the ocean mixed layer model. Validation against infrared measurements and buoys showed a good correlation with minimal deviations. The revised model accurately simulates SST variations and aligns with solar radiation distributions, showing promise for weather and climate models.
Qin Zhou, Chen Zhao, Rupert Gladstone, Tore Hattermann, David Gwyther, and Benjamin Galton-Fenzi
Geosci. Model Dev., 17, 8243–8265, https://doi.org/10.5194/gmd-17-8243-2024, https://doi.org/10.5194/gmd-17-8243-2024, 2024
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We introduce an accelerated forcing approach to address timescale discrepancies between the ice sheets and ocean components in coupled modelling by reducing the ocean simulation duration. The approach is evaluated using idealized coupled models, and its limitations in real-world applications are discussed. Our results suggest it can be a valuable tool for process-oriented coupled ice sheet–ocean modelling and downscaling climate simulations with such models.
Jan D. Zika and Taimoor Sohail
Geosci. Model Dev., 17, 8049–8068, https://doi.org/10.5194/gmd-17-8049-2024, https://doi.org/10.5194/gmd-17-8049-2024, 2024
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We describe a method to relate fluxes of heat and freshwater at the sea surface to the resulting distribution of seawater among categories such as warm and salty or cold and salty. The method exploits the laws that govern how heat and salt change when water mixes. The method will allow the climate community to improve estimates of how much heat the ocean is absorbing and how rainfall and evaporation are changing across the globe.
Gloria Pietropolli, Luca Manzoni, and Gianpiero Cossarini
Geosci. Model Dev., 17, 7347–7364, https://doi.org/10.5194/gmd-17-7347-2024, https://doi.org/10.5194/gmd-17-7347-2024, 2024
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Monitoring the ocean is essential for studying marine life and human impact. Our new software, PPCon, uses ocean data to predict key factors like nitrate and chlorophyll levels, which are hard to measure directly. By leveraging machine learning, PPCon offers more accurate and efficient predictions.
Davi Mignac, Jennifer Waters, Daniel J. Lea, Matthew J. Martin, James While, Anthony T. Weaver, Arthur Vidard, Catherine Guiavarc’h, Dave Storkey, David Ford, Edward W. Blockley, Jonathan Baker, Keith Haines, Martin R. Price, Michael J. Bell, and Richard Renshaw
EGUsphere, https://doi.org/10.5194/egusphere-2024-3143, https://doi.org/10.5194/egusphere-2024-3143, 2024
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We describe major improvements of the Met Office's global ocean-sea ice forecasting system. The models and the way observations are used to improve the forecasts were changed, which led to a significant error reduction of 1-day forecasts. The new system performance in past conditions, where sub-surface observations are scarce, was improved with more consistent ocean heat content estimates. The new system will be of better use for climate studies and will provide improved forecasts for end users.
Marina Amadori, Abolfazl Irani Rahaghi, Damien Bouffard, and Marco Toffolon
Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2024-118, https://doi.org/10.5194/gmd-2024-118, 2024
Revised manuscript accepted for GMD
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Models simplify reality using assumptions, which can sometimes introduce flaws and affect their accuracy. Properly calibrating model parameters is essential, and although automated tools can speed up this process, they may occasionally produce incorrect values due to inconsistencies in the model. We demonstrate that by carefully applying automated tools, we were able to identify and correct a flaw in a widely used model for lake environments.
Jan De Rydt, Nicolas C. Jourdain, Yoshihiro Nakayama, Mathias van Caspel, Ralph Timmermann, Pierre Mathiot, Xylar S. Asay-Davis, Hélène Seroussi, Pierre Dutrieux, Ben Galton-Fenzi, David Holland, and Ronja Reese
Geosci. Model Dev., 17, 7105–7139, https://doi.org/10.5194/gmd-17-7105-2024, https://doi.org/10.5194/gmd-17-7105-2024, 2024
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Global climate models do not reliably simulate sea-level change due to ice-sheet–ocean interactions. We propose a community modelling effort to conduct a series of well-defined experiments to compare models with observations and study how models respond to a range of perturbations in climate and ice-sheet geometry. The second Marine Ice Sheet–Ocean Model Intercomparison Project will continue to lay the groundwork for including ice-sheet–ocean interactions in global-scale IPCC-class models.
Qian Wang, Yang Zhang, Fei Chai, Y. Joseph Zhang, and Lorenzo Zampieri
Geosci. Model Dev., 17, 7067–7081, https://doi.org/10.5194/gmd-17-7067-2024, https://doi.org/10.5194/gmd-17-7067-2024, 2024
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We coupled an unstructured hydro-model with an advanced column sea ice model to meet the growing demand for increased resolution and complexity in unstructured sea ice models. Additionally, we present a novel tracer transport scheme for the sea ice coupled model and demonstrate that this scheme fulfills the requirements for conservation, accuracy, efficiency, and monotonicity in an idealized test. Our new coupled model also has good performance in realistic tests.
Adrien Garinet, Marine Herrmann, Patrick Marsaleix, and Juliette Pénicaud
Geosci. Model Dev., 17, 6967–6986, https://doi.org/10.5194/gmd-17-6967-2024, https://doi.org/10.5194/gmd-17-6967-2024, 2024
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Mixing is a crucial aspect of the ocean, but its accurate representation in computer simulations is made challenging by errors that result in unwanted mixing, compromising simulation realism. Here we illustrate the spurious effect that tides can have on simulations of south-east Asia. Although they play an important role in determining the state of the ocean, they can increase numerical errors and make simulation outputs less realistic. We also provide insights into how to reduce these errors.
Mohamed Ayache, Jean-Claude Dutay, Anne Mouchet, Kazuyo Tachikawa, Camille Risi, and Gilles Ramstein
Geosci. Model Dev., 17, 6627–6655, https://doi.org/10.5194/gmd-17-6627-2024, https://doi.org/10.5194/gmd-17-6627-2024, 2024
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Water isotopes (δ18O, δD) are one of the most widely used proxies in ocean climate research. Previous studies using water isotope observations and modelling have highlighted the importance of understanding spatial and temporal isotopic variability for a quantitative interpretation of these tracers. Here we present the first results of a high-resolution regional dynamical model (at 1/12° horizontal resolution) developed for the Mediterranean Sea, one of the hotspots of ongoing climate change.
Cara Nissen, Nicole S. Lovenduski, Mathew Maltrud, Alison R. Gray, Yohei Takano, Kristen Falcinelli, Jade Sauvé, and Katherine Smith
Geosci. Model Dev., 17, 6415–6435, https://doi.org/10.5194/gmd-17-6415-2024, https://doi.org/10.5194/gmd-17-6415-2024, 2024
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Autonomous profiling floats have provided unprecedented observational coverage of the global ocean, but uncertainties remain about whether their sampling frequency and density capture the true spatiotemporal variability of physical, biogeochemical, and biological properties. Here, we present the novel synthetic biogeochemical float capabilities of the Energy Exascale Earth System Model version 2 and demonstrate their utility as a test bed to address these uncertainties.
Usama Kadri, Ali Abdolali, and Maxim Filimonov
Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2024-139, https://doi.org/10.5194/gmd-2024-139, 2024
Revised manuscript accepted for GMD
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The GREAT v1.0 software introduces a novel tsunami warning technology for global real-time analysis. It leverages acoustic signals generated by tsunamis, which propagate faster than the tsunami itself, enabling real-time detection and assessment. Integrating various models, the software provides reliable and rapid assessment, mapping risk areas, and estimating tsunami amplitude. This advancement reduces false alarms and enhances global tsunami warning systems' accuracy and efficiency.
Ye Yuan, Fujiang Yu, Zhi Chen, Xueding Li, Fang Hou, Yuanyong Gao, Zhiyi Gao, and Renbo Pang
Geosci. Model Dev., 17, 6123–6136, https://doi.org/10.5194/gmd-17-6123-2024, https://doi.org/10.5194/gmd-17-6123-2024, 2024
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Accurate and timely forecasting of ocean waves is of great importance to the safety of marine transportation and offshore engineering. In this study, GPU-accelerated computing is introduced in WAve Modeling Cycle 6 (WAM6). With this effort, global high-resolution wave simulations can now run on GPUs up to tens of times faster than the currently available models can on a CPU node with results that are just as accurate.
Krysten Rutherford, Laura Bianucci, and William Floyd
Geosci. Model Dev., 17, 6083–6104, https://doi.org/10.5194/gmd-17-6083-2024, https://doi.org/10.5194/gmd-17-6083-2024, 2024
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Nearshore ocean models often lack complete information about freshwater fluxes due to numerous ungauged rivers and streams. We tested a simple rain-based hydrological model as inputs into an ocean model of Quatsino Sound, Canada, with the aim of improving the representation of the land–ocean connection in the nearshore model. Through multiple tests, we found that the performance of the ocean model improved when providing 60 % or more of the freshwater inputs from the simple runoff model.
Neill Mackay, Taimoor Sohail, Jan David Zika, Richard G. Williams, Oliver Andrews, and Andrew James Watson
Geosci. Model Dev., 17, 5987–6005, https://doi.org/10.5194/gmd-17-5987-2024, https://doi.org/10.5194/gmd-17-5987-2024, 2024
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The ocean absorbs carbon dioxide from the atmosphere, mitigating climate change, but estimates of the uptake do not always agree. There is a need to reconcile these differing estimates and to improve our understanding of ocean carbon uptake. We present a new method for estimating ocean carbon uptake and test it with model data. The method effectively diagnoses the ocean carbon uptake from limited data and therefore shows promise for reconciling different observational estimates.
Lucille Barré, Frédéric Diaz, Thibaut Wagener, Camille Mazoyer, Christophe Yohia, and Christel Pinazo
Geosci. Model Dev., 17, 5851–5882, https://doi.org/10.5194/gmd-17-5851-2024, https://doi.org/10.5194/gmd-17-5851-2024, 2024
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The carbonate system is typically studied using measurements, but modeling can contribute valuable insights. Using a biogeochemical model, we propose a new representation of total alkalinity, dissolved inorganic carbon, pCO2, and pH in a highly dynamic Mediterranean coastal area, the Bay of Marseille, a useful addition to measurements. Through a detailed analysis of pCO2 and air–sea CO2 fluxes, we show that variations are strongly impacted by the hydrodynamic processes that affect the bay.
Xuanxuan Gao, Shuiqing Li, Dongxue Mo, Yahao Liu, and Po Hu
Geosci. Model Dev., 17, 5497–5509, https://doi.org/10.5194/gmd-17-5497-2024, https://doi.org/10.5194/gmd-17-5497-2024, 2024
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Storm surges generate coastal inundation and expose populations and properties to danger. We developed a novel storm surge inundation model for efficient prediction. Estimates compare well with in situ measurements and results from a numerical model. The new model is a significant improvement on existing numerical models, with much higher computational efficiency and stability, which allows timely disaster prevention and mitigation.
Vincenzo de Toma, Daniele Ciani, Yassmin Hesham Essa, Chunxue Yang, Vincenzo Artale, Andrea Pisano, Davide Cavaliere, Rosalia Santoleri, and Andrea Storto
Geosci. Model Dev., 17, 5145–5165, https://doi.org/10.5194/gmd-17-5145-2024, https://doi.org/10.5194/gmd-17-5145-2024, 2024
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This study explores methods to reconstruct diurnal variations in skin sea surface temperature in a model of the Mediterranean Sea. Our new approach, considering chlorophyll concentration, enhances spatial and temporal variations in the warm layer. Comparative analysis shows context-dependent improvements. The proposed "chlorophyll-interactive" method brings the surface net total heat flux closer to zero annually, despite a net heat loss from the ocean to the atmosphere.
David Storkey, Pierre Mathiot, Michael J. Bell, Dan Copsey, Catherine Guiavarc'h, Helene T. Hewitt, Jeff Ridley, and Malcolm J. Roberts
EGUsphere, https://doi.org/10.5194/egusphere-2024-1414, https://doi.org/10.5194/egusphere-2024-1414, 2024
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The Southern Ocean is a key region of the world ocean in the context of climate change studies. We show that the HadGEM3 coupled model with intermediate ocean resolution struggles to accurately simulate the Southern Ocean. Increasing the frictional drag that the sea floor exerts on ocean currents, and introducing a representation of unresolved ocean eddies both appear to reduce the large-scale biases in this model.
Peter Mlakar, Antonio Ricchi, Sandro Carniel, Davide Bonaldo, and Matjaž Ličer
Geosci. Model Dev., 17, 4705–4725, https://doi.org/10.5194/gmd-17-4705-2024, https://doi.org/10.5194/gmd-17-4705-2024, 2024
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We propose a new point-prediction model, the DEep Learning WAVe Emulating model (DELWAVE), which successfully emulates the Simulating WAves Nearshore model (SWAN) over synoptic to climate timescales. Compared to control climatology over all wind directions, the mismatch between DELWAVE and SWAN is generally small compared to the difference between scenario and control conditions, suggesting that the noise introduced by surrogate modelling is substantially weaker than the climate change signal.
Susanna Winkelbauer, Michael Mayer, and Leopold Haimberger
Geosci. Model Dev., 17, 4603–4620, https://doi.org/10.5194/gmd-17-4603-2024, https://doi.org/10.5194/gmd-17-4603-2024, 2024
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Oceanic transports shape the global climate, but the evaluation and validation of this key quantity based on reanalysis and model data are complicated by the distortion of the used modelling grids and the large number of different grid types. We present two new methods that allow the calculation of oceanic fluxes of volume, heat, salinity, and ice through almost arbitrary sections for various models and reanalyses that are independent of the used modelling grids.
Xiaoyu Fan, Baylor Fox-Kemper, Nobuhiro Suzuki, Qing Li, Patrick Marchesiello, Peter P. Sullivan, and Paul S. Hall
Geosci. Model Dev., 17, 4095–4113, https://doi.org/10.5194/gmd-17-4095-2024, https://doi.org/10.5194/gmd-17-4095-2024, 2024
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Simulations of the oceanic turbulent boundary layer using the nonhydrostatic CROCO ROMS and NCAR-LES models are compared. CROCO and the NCAR-LES are accurate in a similar manner, but CROCO’s additional features (e.g., nesting and realism) and its compressible turbulence formulation carry additional costs.
Jilian Xiong and Parker MacCready
Geosci. Model Dev., 17, 3341–3356, https://doi.org/10.5194/gmd-17-3341-2024, https://doi.org/10.5194/gmd-17-3341-2024, 2024
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The new offline particle tracking package, Tracker v1.1, is introduced to the Regional Ocean Modeling System, featuring an efficient nearest-neighbor algorithm to enhance particle-tracking speed. Its performance was evaluated against four other tracking packages and passive dye. Despite unique features, all packages yield comparable results. Running multiple packages within the same circulation model allows comparison of their performance and ease of use.
Sylvain Cailleau, Laurent Bessières, Léonel Chiendje, Flavie Dubost, Guillaume Reffray, Jean-Michel Lellouche, Simon van Gennip, Charly Régnier, Marie Drevillon, Marc Tressol, Matthieu Clavier, Julien Temple-Boyer, and Léo Berline
Geosci. Model Dev., 17, 3157–3173, https://doi.org/10.5194/gmd-17-3157-2024, https://doi.org/10.5194/gmd-17-3157-2024, 2024
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In order to improve Sargassum drift forecasting in the Caribbean area, drift models can be forced by higher-resolution ocean currents. To this goal a 3 km resolution regional ocean model has been developed. Its assessment is presented with a particular focus on the reproduction of fine structures representing key features of the Caribbean region dynamics and Sargassum transport. The simulated propagation of a North Brazil Current eddy and its dissipation was found to be quite realistic.
Gaetano Porcile, Anne-Claire Bennis, Martial Boutet, Sophie Le Bot, Franck Dumas, and Swen Jullien
Geosci. Model Dev., 17, 2829–2853, https://doi.org/10.5194/gmd-17-2829-2024, https://doi.org/10.5194/gmd-17-2829-2024, 2024
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Here a new method of modelling the interaction between ocean currents and waves is presented. We developed an advanced coupling of two models, one for ocean currents and one for waves. In previous couplings, some wave-related calculations were based on simplified assumptions. Our method uses more complex calculations to better represent wave–current interactions. We tested it in a macro-tidal coastal area and found that it significantly improves the model accuracy, especially during storms.
Colette Gabrielle Kerry, Moninya Roughan, Shane Keating, David Gwyther, Gary Brassington, Adil Siripatana, and Joao Marcos A. C. Souza
Geosci. Model Dev., 17, 2359–2386, https://doi.org/10.5194/gmd-17-2359-2024, https://doi.org/10.5194/gmd-17-2359-2024, 2024
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Ocean forecasting relies on the combination of numerical models and ocean observations through data assimilation (DA). Here we assess the performance of two DA systems in a dynamic western boundary current, the East Australian Current, across a common modelling and observational framework. We show that the more advanced, time-dependent method outperforms the time-independent method for forecast horizons of 5 d. This advocates the use of advanced methods for highly variable oceanic regions.
Ivan Hernandez, Leidy M. Castro-Rosero, Manuel Espino, and Jose M. Alsina Torrent
Geosci. Model Dev., 17, 2221–2245, https://doi.org/10.5194/gmd-17-2221-2024, https://doi.org/10.5194/gmd-17-2221-2024, 2024
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The LOCATE numerical model was developed to conduct Lagrangian simulations of the transport and dispersion of marine debris at coastal scales. High-resolution hydrodynamic data and a beaching module that used particle distance to the shore for land–water boundary detection were used on a realistic debris discharge scenario comparing hydrodynamic data at various resolutions. Coastal processes and complex geometric structures were resolved when using nested grids and distance-to-shore beaching.
Ngoc B. Trinh, Marine Herrmann, Caroline Ulses, Patrick Marsaleix, Thomas Duhaut, Thai To Duy, Claude Estournel, and R. Kipp Shearman
Geosci. Model Dev., 17, 1831–1867, https://doi.org/10.5194/gmd-17-1831-2024, https://doi.org/10.5194/gmd-17-1831-2024, 2024
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A high-resolution model was built to study the South China Sea (SCS) water, heat, and salt budgets. Model performance is demonstrated by comparison with observations and simulations. Important discards are observed if calculating offline, instead of online, lateral inflows and outflows of water, heat, and salt. The SCS mainly receives water from the Luzon Strait and releases it through the Mindoro, Taiwan, and Karimata straits. SCS surface interocean water exchanges are driven by monsoon winds.
Louis Thiry, Long Li, Guillaume Roullet, and Etienne Mémin
Geosci. Model Dev., 17, 1749–1764, https://doi.org/10.5194/gmd-17-1749-2024, https://doi.org/10.5194/gmd-17-1749-2024, 2024
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We present a new way of solving the quasi-geostrophic (QG) equations, a simple set of equations describing ocean dynamics. Our method is solely based on the numerical methods used to solve the equations and requires no parameter tuning. Moreover, it can handle non-rectangular geometries, opening the way to study QG equations on realistic domains. We release a PyTorch implementation to ease future machine-learning developments on top of the presented method.
Zheqi Shen, Yihao Chen, Xiaojing Li, and Xunshu Song
Geosci. Model Dev., 17, 1651–1665, https://doi.org/10.5194/gmd-17-1651-2024, https://doi.org/10.5194/gmd-17-1651-2024, 2024
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Parameter estimation is the process that optimizes model parameters using observations, which could reduce model errors and improve forecasting. In this study, we conducted parameter estimation experiments using the CESM and the ensemble adjustment Kalman filter. The obtained initial conditions and parameters are used to perform ensemble forecast experiments for ENSO forecasting. The results revealed that parameter estimation could reduce analysis errors and improve ENSO forecast skills.
Ali Abdolali, Saeideh Banihashemi, Jose Henrique Alves, Aron Roland, Tyler J. Hesser, Mary Anderson Bryant, and Jane McKee Smith
Geosci. Model Dev., 17, 1023–1039, https://doi.org/10.5194/gmd-17-1023-2024, https://doi.org/10.5194/gmd-17-1023-2024, 2024
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This article presents an overview of the development and implementation of Great Lake Wave Unstructured (GLWUv2.0), including the core model and workflow design and development. The validation was conducted against in situ data for the re-forecasted duration for summer and wintertime (ice season). The article describes the limitations and challenges encountered in the operational environment and the path forward for the next generation of wave forecast systems in enclosed basins like the GL.
Qiang Wang, Qi Shu, Alexandra Bozec, Eric P. Chassignet, Pier Giuseppe Fogli, Baylor Fox-Kemper, Andy McC. Hogg, Doroteaciro Iovino, Andrew E. Kiss, Nikolay Koldunov, Julien Le Sommer, Yiwen Li, Pengfei Lin, Hailong Liu, Igor Polyakov, Patrick Scholz, Dmitry Sidorenko, Shizhu Wang, and Xiaobiao Xu
Geosci. Model Dev., 17, 347–379, https://doi.org/10.5194/gmd-17-347-2024, https://doi.org/10.5194/gmd-17-347-2024, 2024
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Increasing resolution improves model skills in simulating the Arctic Ocean, but other factors such as parameterizations and numerics are at least of the same importance for obtaining reliable simulations.
Andrew C. Ross, Charles A. Stock, Alistair Adcroft, Enrique Curchitser, Robert Hallberg, Matthew J. Harrison, Katherine Hedstrom, Niki Zadeh, Michael Alexander, Wenhao Chen, Elizabeth J. Drenkard, Hubert du Pontavice, Raphael Dussin, Fabian Gomez, Jasmin G. John, Dujuan Kang, Diane Lavoie, Laure Resplandy, Alizée Roobaert, Vincent Saba, Sang-Ik Shin, Samantha Siedlecki, and James Simkins
Geosci. Model Dev., 16, 6943–6985, https://doi.org/10.5194/gmd-16-6943-2023, https://doi.org/10.5194/gmd-16-6943-2023, 2023
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We evaluate a model for northwest Atlantic Ocean dynamics and biogeochemistry that balances high resolution with computational economy by building on the new regional features in the MOM6 ocean model and COBALT biogeochemical model. We test the model's ability to simulate impactful historical variability and find that the model simulates the mean state and variability of most features well, which suggests the model can provide information to inform living-marine-resource applications.
Luca Arpaia, Christian Ferrarin, Marco Bajo, and Georg Umgiesser
Geosci. Model Dev., 16, 6899–6919, https://doi.org/10.5194/gmd-16-6899-2023, https://doi.org/10.5194/gmd-16-6899-2023, 2023
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We propose a discrete multilayer shallow water model based on z-layers which, thanks to the insertion and removal of surface layers, can deal with an arbitrarily large tidal oscillation independently of the vertical resolution. The algorithm is based on a two-step procedure used in numerical simulations with moving boundaries (grid movement followed by a grid topology change, that is, the insertion/removal of surface layers), which avoids the appearance of very thin surface layers.
Lucille Barré, Frédéric Diaz, Thibaut Wagener, France Van Wambeke, Camille Mazoyer, Christophe Yohia, and Christel Pinazo
Geosci. Model Dev., 16, 6701–6739, https://doi.org/10.5194/gmd-16-6701-2023, https://doi.org/10.5194/gmd-16-6701-2023, 2023
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While several studies have shown that mixotrophs play a crucial role in the carbon cycle, the impact of environmental forcings on their dynamics remains poorly investigated. Using a biogeochemical model that considers mixotrophs, we study the impact of light and nutrient concentration on the ecosystem composition in a highly dynamic Mediterranean coastal area: the Bay of Marseille. We show that mixotrophs cope better with oligotrophic conditions compared to strict auto- and heterotrophs.
Trygve Halsne, Kai Håkon Christensen, Gaute Hope, and Øyvind Breivik
Geosci. Model Dev., 16, 6515–6530, https://doi.org/10.5194/gmd-16-6515-2023, https://doi.org/10.5194/gmd-16-6515-2023, 2023
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Surface waves that propagate in oceanic or coastal environments get influenced by their surroundings. Changes in the ambient current or the depth profile affect the wave propagation path, and the change in wave direction is called refraction. Some analytical solutions to the governing equations exist under ideal conditions, but for realistic situations, the equations must be solved numerically. Here we present such a numerical solver under an open-source license.
Jiangyu Li, Shaoqing Zhang, Qingxiang Liu, Xiaolin Yu, and Zhiwei Zhang
Geosci. Model Dev., 16, 6393–6412, https://doi.org/10.5194/gmd-16-6393-2023, https://doi.org/10.5194/gmd-16-6393-2023, 2023
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Ocean surface waves play an important role in the air–sea interface but are rarely activated in high-resolution Earth system simulations due to their expensive computational costs. To alleviate this situation, this paper designs a new wave modeling framework with a multiscale grid system. Evaluations of a series of numerical experiments show that it has good feasibility and applicability in the WAVEWATCH III model, WW3, and can achieve the goals of efficient and high-precision wave simulation.
Doroteaciro Iovino, Pier Giuseppe Fogli, and Simona Masina
Geosci. Model Dev., 16, 6127–6159, https://doi.org/10.5194/gmd-16-6127-2023, https://doi.org/10.5194/gmd-16-6127-2023, 2023
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This paper describes the model performance of three global ocean–sea ice configurations, from non-eddying (1°) to eddy-rich (1/16°) resolutions. Model simulations are obtained following the Ocean Model Intercomparison Project phase 2 (OMIP2) protocol. We compare key global climate variables across the three models and against observations, emphasizing the relative advantages and disadvantages of running forced ocean–sea ice models at higher resolution.
Johannes Röhrs, Yvonne Gusdal, Edel S. U. Rikardsen, Marina Durán Moro, Jostein Brændshøi, Nils Melsom Kristensen, Sindre Fritzner, Keguang Wang, Ann Kristin Sperrevik, Martina Idžanović, Thomas Lavergne, Jens Boldingh Debernard, and Kai H. Christensen
Geosci. Model Dev., 16, 5401–5426, https://doi.org/10.5194/gmd-16-5401-2023, https://doi.org/10.5194/gmd-16-5401-2023, 2023
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A model to predict ocean currents, temperature, and sea ice is presented, covering the Barents Sea and northern Norway. To quantify forecast uncertainties, the model calculates ensemble forecasts with 24 realizations of ocean and ice conditions. Observations from satellites, buoys, and ships are ingested by the model. The model forecasts are compared with observations, and we show that the ocean model has skill in predicting sea surface temperatures.
Jin-Song von Storch, Eileen Hertwig, Veit Lüschow, Nils Brüggemann, Helmuth Haak, Peter Korn, and Vikram Singh
Geosci. Model Dev., 16, 5179–5196, https://doi.org/10.5194/gmd-16-5179-2023, https://doi.org/10.5194/gmd-16-5179-2023, 2023
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The new ocean general circulation model ICON-O is developed for running experiments at kilometer scales and beyond. One targeted application is to simulate internal tides crucial for ocean mixing. To ensure their realism, which is difficult to assess, we evaluate the barotropic tides that generate internal tides. We show that ICON-O is able to realistically simulate the major aspects of the observed barotropic tides and discuss the aspects that impact the quality of the simulated tides.
Bror F. Jönsson, Christopher L. Follett, Jacob Bien, Stephanie Dutkiewicz, Sangwon Hyun, Gemma Kulk, Gael L. Forget, Christian Müller, Marie-Fanny Racault, Christopher N. Hill, Thomas Jackson, and Shubha Sathyendranath
Geosci. Model Dev., 16, 4639–4657, https://doi.org/10.5194/gmd-16-4639-2023, https://doi.org/10.5194/gmd-16-4639-2023, 2023
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While biogeochemical models and satellite-derived ocean color data provide unprecedented information, it is problematic to compare them. Here, we present a new approach based on comparing probability density distributions of model and satellite properties to assess model skills. We also introduce Earth mover's distances as a novel and powerful metric to quantify the misfit between models and observations. We find that how 3D chlorophyll fields are aggregated can be a significant source of error.
Rafael Santana, Helen Macdonald, Joanne O'Callaghan, Brian Powell, Sarah Wakes, and Sutara H. Suanda
Geosci. Model Dev., 16, 3675–3698, https://doi.org/10.5194/gmd-16-3675-2023, https://doi.org/10.5194/gmd-16-3675-2023, 2023
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We show the importance of assimilating subsurface temperature and velocity data in a model of the East Auckland Current. Assimilation of velocity increased the representation of large oceanic vortexes. Assimilation of temperature is needed to correctly simulate temperatures around 100 m depth, which is the most difficult region to simulate in ocean models. Our simulations showed improved results in comparison to the US Navy global model and highlight the importance of regional models.
Cited articles
Ai, C., and Ding, W.: A 3D unstructured non-hydrostatic ocean model for
internal waves, Ocean Dyn., 66, 1253–1270, https://doi.org/10.1007/s10236-016-0980-9, 2016.
Ai, C., Ma, Y., Yuan, C., and Dong, G.: Non-hydrostatic model for internal
wave generations and propagations using immersed boundary method, Ocean.
Eng., 225, 108801, https://doi.org/10.1016/j.oceaneng.2021.108801, 2021.
Apel, J. R., Ostrovsky, L. A., Stepanyants, Y. A., and Lynch, J. F.:
Internal solitons in the ocean and their effect on underwater sound, J.
Acoust. Soc. Am., 121, 695–722, https://doi.org/10.1121/1.2395914, 2007.
Arakawa, A., and Lamb, V. R.: Computational design of the basic dynamical
processes of the UCLA general circulation model, Methods. Comput. Phys., 17,
173–265, https://doi.org/10.1016/B978-0-12-460817-7.50009-4, 1977.
Arbic, B. K. and Scott, R. B.: On quadratic bottom drag, geostrophic
turbulence, and oceanic mesoscale eddies, J. Phys. Oceanogr., 38, 84–103,
https://doi.org/10.1175/2007JPO3653.1, 2008.
Armfield, S. and Street, R.: An analysis and comparison of the time accuracy
of fractional-step methods for the Navier–Stokes equations on staggered
grids, Int. J. Numer. Meth. Fl., 38, 255–282,
https://doi.org/10.1002/fld.217, 2002.
Baines, P. G.: On internal tide generation models, Deep Sea. Res., 29,
307–338, https://doi.org/10.1016/0198-0149(82)90098-X, 1982.
Balay, S., Abhyankar, S., Adams, Mark F., Brown, J., Brune, P., Buschelman,
K., Dalcin, L., Dener, A., Eijkhout, V., Gropp, W., Karpeyev, D., Kaushik,
D., Knepley, M., May, D., McInnes, L. Curfman, Mills, R., Munson, T., Rupp,
K., Sanan, P., Smith, B., Zampini, S., Zhang, H., and Zhang, H.: PETSc Users
Manual, Argonne National Laboratory, Tech. Rep. ANL-95/11-Revision 3.13,
https://doi.org/10.2172/1614847, 2020.
Benjamin, T. B.: Internal waves of finite amplitude and permanent form, J.
Fluid. Mech., 25, 241–270, https://doi.org/10.1017/S0022112066001630, 1966.
Berntsen, J., Xing, J., and Alendal, G.: Assessment of non-hydrostatic ocean
models using laboratory scale problems, Cont. Shelf. Res., 26, 1433–1447,
https://doi.org/10.1016/j.csr.2006.02.014, 2006.
Bourgault, D. and Kelley, D. E.: A laterally averaged nonhydrostatic ocean
model, J. Atmos. Ocean. Tech., 21, 1910–1924,
https://doi.org/10.1175/JTECH-1674.1, 2004.
Buijsman, M. C., Kanarska, Y., and McWilliams, J. C.: On the generation and
evolution of nonlinear internal waves in the South China Sea, J. Geophys.
Res.-Oceans, 115, C02012, https://doi.org/10.1029/2009JC005275, 2010a.
Buijsman, M. C., McWilliams, J. C., and Jackson, C. R.: East-west asymmetry
in nonlinear internal waves from Luzon Strait, J. Geophys. Res.-Oceans, 115,
C10057, https://doi.org/10.1029/2009JC006004, 2010b.
Chen, C., Liu, H., and Beardsley, R. C.: An unstructured grid,
finite-volume, three-dimensional, primitive equations ocean model:
application to coastal ocean and estuaries, J. Atmos. Ocean. Tech., 20,
159–186, https://doi.org/10.1175/1520-0426(2003)020<0159:AUGFVT>2.0.CO;2, 2003.
Chen, X., Jungclaus, J., Thomas, M., Maier-Reimer, E., Haak, H., and Suendermann, J.: An oceanic general circulation and tide model in orthogonal curvilinear coordinates, Amer. Geophys. Union., Fall Meeting 2005, San Francisco, CA, December 2005, Abstract OS41B-0600, https://ui.adsabs.harvard.edu/abs/2005AGUFMOS41B0600C/abstract (last access: 25 December 2022), 2005.
Chen, Z., Nie, Y., Xie, J., Xu, J., He, Y., and Cai, S.: Generation of
internal solitary waves over a large sill: From Knight Inlet to Luzon
Strait, J. Geophys. Res.-Oceans, 122, 1555–1573.
https://doi.org/10.1002/2016JC012206, 2017.
Chorin, A. J.: Numerical solution of the Navier–Stokes equations, Math.
Comput., 22, 745–762, https://doi.org/10.2307/2004575, 1968.
Cushman-Roisin, B.: Kelvin–Helmholtz instability as a boundary-value
problem, Environ. Fluid. Mech., 5, 507–525,
https://doi.org/10.1007/s10652-005-2234-0, 2005.
Duda, T. F., Morozov, A. K., Howe, B. M., Brown, M. G., Speer, K., Lazarevich, P., Worcester, P. F., and Cornuelle, B. D.: Evaluation of a long-range joint acoustic navigation/thermometry system, Oceans 2006 IEEE, 1–6, https://doi.org/10.1109/OCEANS.2006.306999, 2006.
EU Copernicus Marine Service Information: Global Ocean Physics Reanalysis: GLOBAL_MULTIYEAR_PHY_001_030, Copernicus.eu [data set], https://doi.org/10.48670/moi-00021, 2022.
Fofonoff, N. P. and Millard Jr., R. C.: Algorithms for computation of fundamental properties of seawater, Paris, France, UNESCO, 53 pp., https://doi.org/10.25607/OBP-1450, 1983.
Fringer, O. B., Gerritsen, M., and Street, R. L.: An unstructured-grid,
finite-volume, nonhydrostatic, parallel coastal ocean simulator, Ocean.
Model., 14, 139–173, https://doi.org/10.1016/j.ocemod.2006.03.006, 2006.
Garrett, C. and Kunze, E.: Internal tide generation in the deep ocean,
Annu. Rev. Fluid. Mech., 39, 57–87,
https://doi.org/10.1146/annurev.fluid.39.050905.110227, 2007.
Gerkema, T., and Zimmerman, J. T. F.: Generation of nonlinear internal tides and solitary waves, J. Phys. Oceanogr., 25, 1081–1094, https://doi.org/10.1175/1520-0485(1995)025<1081:GONITA>2.0.CO;2, 1995.
Gilbert, D., and Garrett, C.: Implications for ocean mixing of internal wave
scattering off irregular topography, J. Phys. Oceanogr., 19, 1716–1729,
https://doi.org/10.1175/1520-0485(1989)019<1716:IFOMOI>2.0.CO;2, 1989.
Grimshaw, R., Pelinovsky, E., and Poloukhina, O.: Higher-order Korteweg-de Vries models for internal solitary waves in a stratified shear flow with a free surface, Nonlin. Processes Geophys., 9, 221–235, https://doi.org/10.5194/npg-9-221-2002, 2002.
Grimshaw, R., Pelinovsky, E., Talipova, T., and Kurkin, A.: Simulation of
the transformation of internal solitary waves on oceanic shelves, J. Phys. Oceanogr., 34, 2774–2791,
https://doi.org/10.1175/JPO2652.1, 2004.
Grue, J., Jensen, A., Rusås, P. O., and Sveen, J. K.: Breaking
and broadening of internal solitary waves, J. Fluid. Mech., 413, 181–217,
https://doi.org/10.1017/S0022112000008648, 2000.
Härtel, C., Meiburg, E., and Necker, F.: Analysis and direct numerical
simulation of the flow at a gravity-current head. Part 1. Flow topology and
front speed for slip and no-slip boundaries, J. Fluid. Mech., 418, 189–212,
https://doi.org/10.1017/s0022112000001221, 2000.
Huang, H.: HuangOCEAN02/ORCTM: ORCTM v1.1.1 (ORCTMv1.1.1), Zenodo [code],
https://doi.org/10.5281/zenodo.6683597, 2022.
Helfrich, K. R. and Melville, W. K.: On long nonlinear internal waves over
slope-shelf topography, J. Fluid. Mech., 167, 285–308,
https://doi.org/10.1017/S0022112086002823, 1986.
Huang, X., Chen, Z., Zhao, W., Zhang, Z., Zhou, C., Yang, Q., and Tian, J.:
An extreme internal solitary wave event observed in the northern South China
Sea, Sci. Rep.-UK, 6, 1–10, https://doi.org/10.1038/srep30041, 2016.
Kanarska, Y., Shchepetkin, A., and McWilliams, J. C.: Algorithm for
non-hydrostatic dynamics in the regional oceanic modeling system, Ocean.
Model., 18, 143–174, https://doi.org/10.1016/j.ocemod.2007.04.001, 2007.
Ko, D. S., Martin, P. J., Rowley, C. D., and Preller, R. H.: A real-time
coastal ocean prediction experiment for MREA04, J. Marine. Syst., 69, 17–28,
https://doi.org/10.1016/j.jmarsys.2007.02.022, 2008.
Lai, Z., Chen, C., Cowles, G. W., and Beardsley, R. C.: A nonhydrostatic
version of FVCOM: 1. Validation experiments, J. Geophys. Res.-Oceans, 115,
C11010, https://doi.org/10.1029/2009JC005525, 2010.
Lawrence, G. A., Browand, F. K., and Redekopp, L. G.: The stability of a
sheared density interface, Phys. Fluids. A-Fluid., 3, 2360–2370,
https://doi.org/10.1063/1.858175, 1991.
Legg, S., and Adcroft, A.: Internal wave breaking at concave and convex
continental slopes, J. Phys. Oceanogr., 33, 2224–2246,
https://doi.org/10.1175/1520-0485(2003)033<2224:IWBACA>2.0.CO;2, 2003.
Legg, S. and Klymak, J.: Internal hydraulic jumps and overturning generated
by tidal flow over a tall steep ridge, J. Phys. Oceanogr., 38, 1949–1964,
https://doi.org/10.1175/2008JPO3777.1, 2008.
Li, Q.: Numerical assessment of factors affecting nonlinear internal waves
in the South China Sea, Prog. Oceanogr., 121, 24–43,
https://doi.org/10.1016/j.pocean.2013.03.006, 2014.
Li, J., Zhang, Q., and Chen, T.: ISWFoam: a numerical model for internal solitary wave simulation in continuously stratified fluids, Geosci. Model Dev., 15, 105–127, https://doi.org/10.5194/gmd-15-105-2022, 2022.
Liu, Z.: Instability of baroclinic tidal flow in a stratified fjord, J.
Phys. Oceanogr., 40, 139–154, https://doi.org/10.1175/2009JPO4154.1, 2010.
Liu, Z., Lin, L., Xie, L., and Gao, H.: Partially implicit finite difference
scheme for calculating dynamic pressure in a terrain-following coordinate
non-hydrostatic ocean model, Ocean. Model., 106, 44–57,
https://doi.org/10.1016/j.ocemod.2016.09.004, 2016.
Ma, Q., Yuan, C., Lin, X., and Chen, X.: The investigation of internal
solitary waves over a continental shelf-slope, J. Oceanol. Limnol., 38,
695–706, https://doi.org/10.1007/s00343-019-9123-8, 2020.
Marshall, J., Hill, C., Perelman, L., and Adcroft, A.: Hydrostatic,
quasi-hydrostatic, and nonhydrostatic ocean modeling, J. Geophys.
Res.-Oceans, 102, 5733–5752, https://doi.org/10.1029/96JC02776, 1997a.
Marshall, J., Adcroft, A., Hill, C., Perelman L., and Heisey, C.: A
finite-volume, incompressible Navier Stokes model for studies of the ocean
on parallel computers, J. Geophys. Res.-Oceans, 102, 5753–5766,
https://doi.org/10.1029/96JC02775, 1997b.
Marshall, J., Jones, H., and Hill, C.: Efficient ocean modeling using
non-hydrostatic algorithms, J. Marine. Syst., 18, 115–134,
https://doi.org/10.1016/S0924-7963(98)00008-6, 1998.
Marsland, S. J., Haak, H., Jungclaus, J. H., Latif, M. and Röske, F.:
The Max-Planck-Institute global ocean/sea ice model with orthogonal
curvilinear coordinates, Ocean. Model., 5, 91–127,
https://doi.org/10.1016/S1463-5003(02)00015-X, 2003.
Michallet, H. and Barthélemy, E.: Experimental study of interfacial
solitary waves, J. Fluid. Mech., 366, 159–177,
https://doi.org/10.1017/S002211209800127X, 1998.
Michallet, H. and Ivey, G. N.: Experiments on mixing due to internal
solitary waves breaking on uniform slopes, J. Geophys. Res.-Oceans, 104,
13467–13477, https://doi.org/10.1029/1999JC900037, 1999.
Miles, J. W.: On the stability of heterogeneous shear flows, J. Fluid.
Mech., 10, 496–508, https://doi.org/10.1017/S0022112061000305, 1961.
Mtfller, P.: On the diffusion of momentum and mass by internal gravity
waves, J. Fluid. Mech., 77, 789–823,
https://doi.org/10.1017/S0022112076002899, 1976.
Ono, H.: Algebraic solitary waves in stratified fluids, J. Phys. Soc. Jpn.,
39, 1082–1091, https://doi.org/10.1143/JPSJ.39.1082, 1975.
Osborne, A. R., Burch, T. L., and Scarlet, R. I.: The influence of internal
waves on deep-water drilling, J. Pet. Technol., 30, 1497–1504,
https://doi.org/10.2118/6913-PA, 1978.
Pacanowski, R. C., and Philander, S. G. H.: Parameterization of vertical
mixing in numerical models of tropical oceans, J. Phys Oceanogr., 11,
1443-1451, https://doi.org/10.1175/1520-0485(1981)011<1443:POVMIN>2.0.CO;2, 1981.
Press, W. H., Flannery, B. P., Teukolsky, S. A., and Vetterling, W. T.: Numerical Recipes in C. The Art of Scientific Computing, Cambridge University Press, ISBN: 0-521-35465-X, 1988.
Ramp, S. R., Tang, T. Y., Duda, T. F., Lynch, J. F., Liu, A. K., Chiu, C. S., Bahr, F. L., Kim, H. R., and Yang, Y. J.: Internal solitons in the northeastern South China Sea. Part I: Sources and deep water propagation, IEEE. J. Oceanic. Eng., 29, 1157–1181, https://doi.org/10.1109/JOE.2004.840839, 2004.
Ramp, S. R., Park, J. -H., Yang, Y. J., Bahr, F. L., and Jeon, C.:
Latitudinal Structure of Solitons in the South China Sea, J. Phys.
Oceanogr., 49, 1747–1767, https://doi.org/10.1175/JPO-D-18-0071.1, 2019.
Saad Y.: A flexible inner-outer preconditioned GMRES algorithm, SIAM J. Sci.
Comput., 14, 461–469, https://doi.org/10.1137/0914028, 1993.
Shaw, P. T., Ko, D. S., and Chao, S. Y.: Internal solitary waves induced by
flow over a ridge: With applications to the northern South China Sea, J.
Geophys. Res.-Oceans, 114, C02019, https://doi.org/10.1029/2008JC005007,
2009.
Shchepetkin, A. F., and McWilliams, J. C.: The regional oceanic modeling
system (ROMS): a split-explicit, free-surface,
topography-following-coordinate oceanic model, Ocean. Model., 9, 347–404,
https://doi.org/10.1016/j.ocemod.2004.08.002, 2005.
Smith, B., Bjørstad, P., and Gropp, W.: Domain Decomposition: Parallel Multilevel Methods for Elliptic Partial Differential Equations, Cambridge University Press, https://doi.org/10.1016/S0898-1221(97)90035-3, 1996.
Stansby, P. K. and Zhou, J. G.: Shallow‐water flow solver with non‐hydrostatic pressure: 2D vertical plane problems, Int. J. Numer. Meth. Fluids, 28, 541–563, https://doi.org/10.1002/(SICI)1097-0363(19980915)28:3<541::AID-FLD738>3.0.CO;2-0, 1998.
Vlasenko, V. and Hutter, K.: Numerical experiments on the breaking of solitary
internal waves over a slope–shelf topography, J. Phys. Oceannogr., 32,
1779–1793, https://doi.org/10.1175/1520-0485(2002)032<1779:NEOTBO>2.0.CO;2, 2002.
Vlasenko, V., Stashchuk, N., and Hutter, K.: Baroclinic tides: theoretical modeling and observational evidence, Cambridge University Press, ISBN: 978-0-521-84395-9, 2005.
Vlasenko, V., Stashchuk, N., Guo, C., and Chen, X.: Multimodal structure of baroclinic tides in the South China Sea, Nonlin. Processes Geophys., 17, 529–543, https://doi.org/10.5194/npg-17-529-2010, 2010.
Wang, Y. H., Dai, C. F., and Chen, Y. Y.: Physical and ecological processes
of internal waves on an isolated reef ecosystem in the South China Sea,
Geophys. Res. Lett., 34, 312–321, https://doi.org/10.1029/2007GL030658,
2007.
Wessels, F. and Hutter, K.: Interaction of internal waves with a
topographic sill in a two-layered fluid, J. Phys. Oceanogr., 26, 5–20,
https://doi.org/10.1175/1520-0485(1996)026<0005:IOIWWA>2.0.CO;2, 1996.
Wolff, J. -O., Maier-Reimer, E., and Legutke, S.: The Hamburg ocean primitive equation model, Tech. Rep. No. 13, German Climate Computer Center (DKRZ), Hamburg, Germany, ISSN: 0940-9327, https://hdl.handle.net/21.11116/0000-0009-1487-8 (last access: 25 December 2022), 1997.
Zhang, Z., Fringer, O. B., and Ramp, S. R.: Three-dimensional,
nonhydrostatic numerical simulation of nonlinear internal wave generation
and propagation in the South China Sea, J. Geophys. Res.-Oceans, 116, C05022,
https://doi.org/10.1029/2010JC006424, 2011.
Zhao, Z. and Alford, M. H.: Source and propagation of internal solitary
waves in the northeastern South China Sea, J. Geophys. Res.-Oceans, 111,
C11012, https://doi.org/10.1029/2006JC003644, 2006.
Zeng, Z., Chen, X., Yuan, C., Tang, S., and Chi, L.: A numerical study of
generation and propagation of type-a and type-b internal solitary waves in
the northern South China Sea, Acta Oceanol. Sin., 38, 20–30,
https://doi.org/10.1007/s13131-019-1495-2, 2019.
Zheng, Q., Susanto, R. D., Ho, C. R., Song, Y. T., and Xu, Q.: Statistical
and dynamical analyses of generation mechanisms of solitary internal waves
in the northern South China Sea, J. Geophys. Res.-Oceans, 112, C0302,
https://doi.org/10.1029/2006JC003551, 2007.
Short summary
The Oceanic Regional Circulation and Tide Model (ORCTM) is developed to reproduce internal solitary wave dynamics. The three-dimensional nonlinear momentum equations are involved with the nonhydrostatic pressure obtained via solving the Poisson equation. The validation experimental results agree with the internal wave theories and observations, demonstrating that the ORCTM can successfully describe the life cycle of nonlinear internal solitary waves under different oceanic environments.
The Oceanic Regional Circulation and Tide Model (ORCTM) is developed to reproduce internal...
