Articles | Volume 19, issue 14
https://doi.org/10.5194/gmd-19-7041-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/gmd-19-7041-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Model evaluation paper
| 
31 Jul 2026
Model evaluation paper |
| 31 Jul 2026
| 31 Jul 2026
Untangling the effects of vertical mixing schemes and convective adjustment in the Mediterranean Sea: insights from a sensitivity study
CMCC Foundation – Euro-Mediterranean Center on Climate Change, Bologna, Italy
Hans Burchard
Leibniz Institute for Baltic Sea Research Warnemünde, Rostock, Germany
Federica Borile
CMCC Foundation – Euro-Mediterranean Center on Climate Change, Bologna, Italy
University of Bologna, Department of Physics and Astronomy, Bologna, Italy
Aimie Moulin
CMCC Foundation – Euro-Mediterranean Center on Climate Change, Bologna, Italy
Pietro Miraglio
CMCC Foundation – Euro-Mediterranean Center on Climate Change, Bologna, Italy
Francesco Maicu
CMCC Foundation – Euro-Mediterranean Center on Climate Change, Bologna, Italy
Emanuela Clementi
CMCC Foundation – Euro-Mediterranean Center on Climate Change, Bologna, Italy
Paolo Oddo
University of Bologna, Department of Physics and Astronomy, Bologna, Italy
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Filipe Costa, Ehsan Sadighrad, Leonardo Lima, Ali Aydoğdu, Mehmet Ilicak, Diana Azevedo, and Emanuela Clementi
State Planet Discuss., https://doi.org/10.5194/sp-2026-17, https://doi.org/10.5194/sp-2026-17, 2026
Preprint under review for SP
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Freshwater is essential to the Black Sea, supporting marine ecosystems, coastal management, and climate services. This study presents the first long-term assessment of freshwater storage changes using a high-resolution regional dataset. We show that freshwater has declined mainly because of increasing evaporation and decreasing river discharge. This new indicator supports long-term monitoring of environmental change in the Black Sea.
Anna Chiara Goglio, Lorenzo Mentaschi, Begoña Pérez Gómez, Paolo Oddo, Emanuela Clementi, and Federica Borile
State Planet Discuss., https://doi.org/10.5194/sp-2026-7, https://doi.org/10.5194/sp-2026-7, 2026
Preprint under review for SP
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Mediterranean coastal communities are increasingly threatened by extreme sea level events. We built an indicator combining model and observed data to summarize their changes. The analysis of their evolution revealed that the associated hazard is rising along the entire coastline, especially in the northern Adriatic, the Aegean Sea, and along Turkish and Cypriot coasts. This trend is mostly driven by sea level rise, except for the Adriatic Sea, where strong storm effects play a bigger role.
Laura Feudale, Giorgio Bolzon, Gianpiero Cossarini, Anna Teruzzi, Emanuela Clementi, and Stefano Salon
EGUsphere, https://doi.org/10.5194/egusphere-2026-3413, https://doi.org/10.5194/egusphere-2026-3413, 2026
This preprint is open for discussion and under review for Ocean Science (OS).
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We investigate the impact of physical forcing frequency on Mediterranean biogeochemical simulations. Using 6-hourly instead of daily ocean fields improves phytoplankton bloom and nutrient patterns through a better representation of vertical transport processes, highlighting the importance of high-frequency variability for ecosystem forecasting.
Martina Auditore, Baptiste Mourre, and Paolo Oddo
EGUsphere, https://doi.org/10.5194/egusphere-2026-3276, https://doi.org/10.5194/egusphere-2026-3276, 2026
This preprint is open for discussion and under review for Ocean Science (OS).
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Coastal eddies are rotating water masses that transport heat, nutrients, and other materials, shaping ecosystems and circulation. This study evaluates the new SWOT (Surface Water and Ocean Topography) satellite’s ability to track the alongshore propagation of a coastal eddy in the Algerian Basin (Western Mediterranean). SWOT’s high-resolution daily observations capture eddy evolution in unprecedented detail, revealing interactions with the coast and topography beyond conventional altimetry.
Hans Burchard, Knut Klingbeil, Xiangyu Li, Lloyd Reese, and W. Rockwell Geyer
Ocean Sci., 22, 1875–1918, https://doi.org/10.5194/os-22-1875-2026, https://doi.org/10.5194/os-22-1875-2026, 2026
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This review presents major aspects of estuarine mixing. Due to the large amounts of brackish water in estuaries produced by mixing of fresh river discharge and salty ocean water, mixing is one major characteristic of what is an estuary. Mixing is quantified locally as well as on estuary-wide scales. Diagnostics of integrated mixing are given for estuarine volumes bounded by transects as well as surfaces of constant salinity moving with the flow. Examples for real-world estuaries are given.
Manuel Díez-Minguito and Hans Burchard
Ocean Sci., 22, 1861–1874, https://doi.org/10.5194/os-22-1861-2026, https://doi.org/10.5194/os-22-1861-2026, 2026
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Combining field observations with an analytical tidal scenario, we estimated in the Guadalquivir estuary its Total Exchange Flow (TEF), which has implications for water quality and residence times. The influence of tidal asymmetry on TEF is also explored. Results reveal a spatial variability in TEF and that salinity–current covariance exerts greater control on TEF than tidal asymmetry. The approach is suitable for regional studies evaluating sensitivity to changes in runoff, salinity and tides.
Evridiki Chrysagi, Lars Umlauf, Ulf Gräwe, Hans Burchard, and Alberto C. Naveira Garabato
EGUsphere, https://doi.org/10.5194/egusphere-2026-2878, https://doi.org/10.5194/egusphere-2026-2878, 2026
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High-resolution numerical simulations of the Baltic Sea reveal that fine-scale motions known as submesoscales are widespread in the deeper layers of the basin, especially near its boundaries. These features are linked to strong mixing and, in this wind-driven system, are found to intensify during storms, with wind reversals shifting the location of mixing hotspots. Our results suggest that storm-modulated submesoscales may be important in other wind-driven coastal seas and lakes.
Manuel Vargas-Yáñez, Orens Pasqueron de Fommervault, Emanuela Clementi, Christian Ferrarin, Svitlana Liubertseva, Diego Álvarez-Berastegui, Baptiste Mourre, Salvatore Aronica, Rosa Balbin, Joaquín Ballabrera-Poy, Sana Ben Ismail, Nathaniel Benssousan, Ismail Bessa, Alicia Blanco, Anthony Bosse, Evi Bourma, François Bourrin, Carlo Brandini, Fulvio Capodici, Clara Casals-Baixas, Branko Cermelj, Giuseppe Ciraolo, Pascal Conan, Laurent Coppola, Lorenzo Corgnati, Joaquín del Río, Emilie Diamond Riquier, Lara Diaz-Barroso, Bartolomeo Doronzo, Xavier Durrieu de Madron, Milad Fakhri, Costantine Frangoulis, Claudia Fratianni, Emilio García-Ladona, Jesus García-Lafuente, M. Carmen García-Martínez, Joaquín Garrabou, Josep Gasol, Adam Gauci, Frédéric Gazeau, Gerard Gregory, Abed El Raman Hassoun, Jordi Isern-Fontanet, Dominique Lefevre, Nadia Lo Bue, Guiomar López, Pablo Lorente, Deny Malengros, Ramon Massana, Sinan Mavruk, Stefano Miserocchi, Behzad Mostajir, Laure Mousseau, Francina Moya, Antonio Novellino, Arianna Orasi, Emanuele Organelli, Vicent Ouisse, Tal Ozer, Begoña Pérez-Gómez, Susana Pérez-Rubio, Leonidas Perivoliotis, Georges Petihakis, Anne Petrenko, Sebastien Pinel, Xavier Pitarch, Angela Pomaro, Lucía Quirós-Collazos, Emma Reyes, Simone Sammartino, Anna Sánchez-Vidal, Katrin Schroeder, Stefano Taddei, Elena Tel, Pierre Testor, Marco Torri, Daniela Turk, Laura Ursella, Dimitris Velaoras, Francesca Vidussi, Ivica Vilivić, Enrico Zambiachi, D. Nikolaos Zarokanellos, George Zodiatis, and Vanessa Cardin
EGUsphere, https://doi.org/10.5194/egusphere-2026-2632, https://doi.org/10.5194/egusphere-2026-2632, 2026
This preprint is open for discussion and under review for Ocean Science (OS).
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This work compiles current marine observation capabilities in the Mediterranean Sea, making this information accessible to scientists, organizations, stakeholders, and environmental policymakers. It supports initiatives such as Copernicus Marine Service, EMODNet, the European Ocean Pact, and EU directives. It is intended as a living resource to be updated, identifying strengths and gaps in Mediterranean observation systems.
Simona Masina, Andrea Cipollone, Doroteaciro Iovino, Stefania Ciliberti, Rita Lecci, Sergio Cretí, Vladyslav Lyubartsev, Giovanni Coppini, and Emanuela Clementi
EGUsphere, https://doi.org/10.5194/egusphere-2026-887, https://doi.org/10.5194/egusphere-2026-887, 2026
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The paper presents GOFS16, an eddy-resolving global operational ocean and sea ice forecasting system which provides 6-day forecasts of three-dimensional temperature, salinity, currents, sea level, and sea ice properties. The system assimilates satellite and in situ observations using a 3D variational data assimilation scheme. Validation is conducted routinely using global and regional metrics. Results indicate that GOFS16 performs within the expected range of skill for current global systems.
Leonardo Lima, Diana Azevedo, Mehmet Ilicak, Eric Jansen, Filipe Costa, Adil Sozer, Pietro Miraglio, and Emanuela Clementi
Ocean Sci., 22, 1051–1072, https://doi.org/10.5194/os-22-1051-2026, https://doi.org/10.5194/os-22-1051-2026, 2026
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We used a high-resolution ocean model to investigate how the Black Sea is responding to external drivers, including climate change. Our results show clear warming, particularly in the upper 150 m, and reveal significant changes in ocean circulation and water masses. The model also supports the development of ocean monitoring indicators that help track the sea’s response to climate-related trends and improve our understanding of how ocean conditions in the Black Sea evolve.
Mahmud Hasan Ghani, Nadia Pinardi, Antonio Navarra, Lorenzo Mentaschi, Silvia Bianconcini, Francesco Maicu, and Francesco Trotta
Ocean Sci., 22, 427–441, https://doi.org/10.5194/os-22-427-2026, https://doi.org/10.5194/os-22-427-2026, 2026
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Using the same sea surface temperature and the same bulk formula but different atmospheric reanalysis and analysis surface-variable datasets, we show that a higher-resolution dataset is crucial for evaluating the heat-budget closure hypothesis in the Mediterranean Sea. For the first time, we investigate the impact of extreme heat-loss events in the Mediterranean Sea by computing the long-term, basin-averaged mean heat budget.
Markus Reinert, Claudia Wekerle, Knut Klingbeil, Marvin Lorenz, and Hans Burchard
EGUsphere, https://doi.org/10.5194/egusphere-2025-6459, https://doi.org/10.5194/egusphere-2025-6459, 2026
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The Greenland Ice Sheet is an important contributor to global sea level rise. In northern Greenland, floating glacier tongues are primarily melted by ocean currents. These processes are difficult to observe, so we developed a realistic numerical model to study ocean-driven melting at Greenland's largest floating ice tongue, the 79° North Glacier. Our simulation reveals the details of the oceanic currents bringing warm water toward the ice base, melting and shaping the glacier tongue from below.
Paolo Oddo, Mario Adani, Francesco Carere, Andrea Cipollone, Anna Chiara Goglio, Eric Jansen, Ali Aydogdu, Francesca Mele, Italo Epicoco, Jenny Pistoia, Emanuela Clementi, Nadia Pinardi, and Simona Masina
Geosci. Model Dev., 19, 423–445, https://doi.org/10.5194/gmd-19-423-2026, https://doi.org/10.5194/gmd-19-423-2026, 2026
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This study present a data assimilation system that combines ocean observational data with ocean model results to better understand the ocean and predict its future state. The method uses a three dimensional incremental variational approach focusing on the physical relationships between all the state vector variables errors. Testing in the Mediterranean Sea showed that a complex sea level operator based on a barotropic model works best.
Leonardo Lima, Rafael Menezes, Ehsan Sadighrad, Ronan McAdam, Filipe Costa, Pietro Miraglio, Mehmet Ilicak, Eric Jansen, Ali Aydogdu, Francesco Maicu, and Emanuela Clementi
State Planet Discuss., https://doi.org/10.5194/sp-2025-6, https://doi.org/10.5194/sp-2025-6, 2025
Revised manuscript accepted for SP
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As climate change intensifies, marine heatwaves (MHWs), periods of unusually high ocean temperatures, threaten ecosystems and communities. This study analyzes MHWs in the Mediterranean and Black Seas, examining surface temperatures and ocean heat content in the upper 0–40 meters to capture subsurface warming. Findings highlight the need to monitor both surface and subsurface conditions for a comprehensive understanding and better management considering ongoing warming trends in both seas.
Federica Borile, Vladyslav Lyubartsev, Begoña Pérez Gómez, Jue Lin-Ye, Anna Mangilli, Ali Aydogdu, Emanuela Clementi, and Paolo Oddo
State Planet Discuss., https://doi.org/10.5194/sp-2025-2, https://doi.org/10.5194/sp-2025-2, 2025
Revised manuscript accepted for SP
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Sea level trends are analysed in the western and eastern Mediterranean Sea using satellite and in-situ data. We found that sea level rise is not constant but varies over decades and differs between regions. These changes are influenced by temperature, salinity, and local land movements. Understanding this variability helps improve coastal planning and prepares communities for changing sea levels in the near future.
Salvatore Causio, Seimur Shirinov, Ivan Federico, Giovanni De Cillis, Emanuela Clementi, Lorenzo Mentaschi, and Giovanni Coppini
Ocean Sci., 21, 1105–1123, https://doi.org/10.5194/os-21-1105-2025, https://doi.org/10.5194/os-21-1105-2025, 2025
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This study examines how waves and ocean currents interact during severe weather, focusing on Medicane Ianos, one of the strongest storms in the Mediterranean. Using advanced modeling, we created a unique system to simulate these interactions, capturing effects like wave-induced water levels and wave-induced effects on the vertical structure of the ocean. We validated our approach with ideal tests and real data from the storm.
Mauro Cirano, Enrique Alvarez-Fanjul, Arthur Capet, Stefania Ciliberti, Emanuela Clementi, Boris Dewitte, Matias Dinápoli, Ghada El Serafy, Patrick Hogan, Sudheer Joseph, Yasumasa Miyazawa, Ivonne Montes, Diego A. Narvaez, Heather Regan, Claudia G. Simionato, Gregory C. Smith, Joanna Staneva, Clemente A. S. Tanajura, Pramod Thupaki, Claudia Urbano-Latorre, Jennifer Veitch, and Jorge Zavala Hidalgo
State Planet, 5-opsr, 5, https://doi.org/10.5194/sp-5-opsr-5-2025, https://doi.org/10.5194/sp-5-opsr-5-2025, 2025
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Operational ocean forecasting systems (OOFSs) are crucial for human activities, environmental monitoring, and policymaking. An assessment across eight key regions highlights strengths and gaps, particularly in coastal and biogeochemical forecasting. AI offers improvements, but collaboration, knowledge sharing, and initiatives like the OceanPrediction Decade Collaborative Centre (DCC) are key to enhancing accuracy, accessibility, and global forecasting capabilities.
Jennifer Veitch, Enrique Alvarez-Fanjul, Arthur Capet, Stefania Ciliberti, Mauro Cirano, Emanuela Clementi, Fraser Davidson, Ghada el Serafy, Guilherme Franz, Patrick Hogan, Sudheer Joseph, Svitlana Liubartseva, Yasumasa Miyazawa, Heather Regan, and Katerina Spanoudaki
State Planet, 5-opsr, 6, https://doi.org/10.5194/sp-5-opsr-6-2025, https://doi.org/10.5194/sp-5-opsr-6-2025, 2025
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Ocean forecast systems provide information about a future state of the ocean. This information is provided in the form of decision support tools, or downstream applications, that can be accessed by various stakeholders to support livelihoods, coastal resilience and the good governance of the marine environment. This paper provides an overview of the various downstream applications of ocean forecast systems that are utilized around the world.
Torsten Kanzow, Angelika Humbert, Thomas Mölg, Mirko Scheinert, Matthias Braun, Hans Burchard, Francesca Doglioni, Philipp Hochreuther, Martin Horwath, Oliver Huhn, Maria Kappelsberger, Jürgen Kusche, Erik Loebel, Katrina Lutz, Ben Marzeion, Rebecca McPherson, Mahdi Mohammadi-Aragh, Marco Möller, Carolyne Pickler, Markus Reinert, Monika Rhein, Martin Rückamp, Janin Schaffer, Muhammad Shafeeque, Sophie Stolzenberger, Ralph Timmermann, Jenny Turton, Claudia Wekerle, and Ole Zeising
The Cryosphere, 19, 1789–1824, https://doi.org/10.5194/tc-19-1789-2025, https://doi.org/10.5194/tc-19-1789-2025, 2025
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The Greenland Ice Sheet represents the second-largest contributor to global sea-level rise. We quantify atmosphere, ice and ocean processes related to the mass balance of glaciers in northeast Greenland, focusing on Greenland’s largest floating ice tongue, the 79° N Glacier. We find that together, the different in situ and remote sensing observations and model simulations reveal a consistent picture of a coupled atmosphere–ice sheet–ocean system that has entered a phase of major change.
Siren Rühs, Ton van den Bremer, Emanuela Clementi, Michael C. Denes, Aimie Moulin, and Erik van Sebille
Ocean Sci., 21, 217–240, https://doi.org/10.5194/os-21-217-2025, https://doi.org/10.5194/os-21-217-2025, 2025
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Simulating the transport of floating particles on the ocean surface is crucial for solving many societal issues. Here, we investigate how the representation of wind-generated surface waves impacts particle transport simulations. We find that different wave-driven processes can alter transport patterns and that commonly adopted approximations are not always adequate. This suggests that ideally coupled ocean–wave models should be used for surface particle transport simulations.
Karina von Schuckmann, Lorena Moreira, Mathilde Cancet, Flora Gues, Emmanuelle Autret, Ali Aydogdu, Lluis Castrillo, Daniele Ciani, Andrea Cipollone, Emanuela Clementi, Gianpiero Cossarini, Alvaro de Pascual-Collar, Vincenzo De Toma, Marion Gehlen, Rianne Giesen, Marie Drevillon, Claudia Fanelli, Kevin Hodges, Simon Jandt-Scheelke, Eric Jansen, Melanie Juza, Ioanna Karagali, Priidik Lagemaa, Vidar Lien, Leonardo Lima, Vladyslav Lyubartsev, Ilja Maljutenko, Simona Masina, Ronan McAdam, Pietro Miraglio, Helen Morrison, Tabea Rebekka Panteleit, Andrea Pisano, Marie-Isabelle Pujol, Urmas Raudsepp, Roshin Raj, Ad Stoffelen, Simon Van Gennip, Pierre Veillard, and Chunxue Yang
State Planet, 4-osr8, 2, https://doi.org/10.5194/sp-4-osr8-2-2024, https://doi.org/10.5194/sp-4-osr8-2-2024, 2024
Anna Teruzzi, Ali Aydogdu, Carolina Amadio, Emanuela Clementi, Simone Colella, Valeria Di Biagio, Massimiliano Drudi, Claudia Fanelli, Laura Feudale, Alessandro Grandi, Pietro Miraglio, Andrea Pisano, Jenny Pistoia, Marco Reale, Stefano Salon, Gianluca Volpe, and Gianpiero Cossarini
State Planet, 4-osr8, 15, https://doi.org/10.5194/sp-4-osr8-15-2024, https://doi.org/10.5194/sp-4-osr8-15-2024, 2024
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A noticeable cold spell occurred in Eastern Europe at the beginning of 2022 and was the main driver of intense deep-water formation and the associated transport of nutrients to the surface. Southeast of Crete, the availability of both light and nutrients in the surface layer stimulated an anomalous phytoplankton bloom. In the area, chlorophyll concentration (a proxy for bloom intensity) and primary production were considerably higher than usual, suggesting possible impacts on fishery catches.
Ronan McAdam, Giulia Bonino, Emanuela Clementi, and Simona Masina
State Planet, 4-osr8, 13, https://doi.org/10.5194/sp-4-osr8-13-2024, https://doi.org/10.5194/sp-4-osr8-13-2024, 2024
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In the summer of 2022, a regional short-term forecasting system was able to predict the onset, spread, peaks, and decay of a record-breaking marine heatwave in the Mediterranean Sea up to 10 d in advance. Satellite data show that the event was record-breaking in terms of basin-wide intensity and duration. This study demonstrates the potential of state-of-the-art forecasting systems to provide early warning of marine heatwaves for marine activities (e.g. conservation and aquaculture).
Bethany McDonagh, Emanuela Clementi, Anna Chiara Goglio, and Nadia Pinardi
Ocean Sci., 20, 1051–1066, https://doi.org/10.5194/os-20-1051-2024, https://doi.org/10.5194/os-20-1051-2024, 2024
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Tides in the Mediterranean Sea are typically of low amplitude, but twin experiments with and without tides demonstrate that tides affect the circulation directly at scales away from those of the tides. Analysis of the energy changes due to tides shows that they enhance existing oscillations, and internal tides interact with other internal waves. Tides also increase the mixed layer depth and enhance deep water formation in key regions. Internal tides are widespread in the Mediterranean Sea.
Giulia Bonino, Giuliano Galimberti, Simona Masina, Ronan McAdam, and Emanuela Clementi
Ocean Sci., 20, 417–432, https://doi.org/10.5194/os-20-417-2024, https://doi.org/10.5194/os-20-417-2024, 2024
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This study employs machine learning to predict marine heatwaves (MHWs) in the Mediterranean Sea. MHWs have far-reaching impacts on society and ecosystems. Using data from ESA and ECMWF, the research develops accurate prediction models for sea surface temperature (SST) and MHWs across the region. Notably, machine learning methods outperform existing forecasting systems, showing promise in early MHW predictions. The study also highlights the importance of solar radiation as a predictor of SST.
Giovanni Coppini, Emanuela Clementi, Gianpiero Cossarini, Stefano Salon, Gerasimos Korres, Michalis Ravdas, Rita Lecci, Jenny Pistoia, Anna Chiara Goglio, Massimiliano Drudi, Alessandro Grandi, Ali Aydogdu, Romain Escudier, Andrea Cipollone, Vladyslav Lyubartsev, Antonio Mariani, Sergio Cretì, Francesco Palermo, Matteo Scuro, Simona Masina, Nadia Pinardi, Antonio Navarra, Damiano Delrosso, Anna Teruzzi, Valeria Di Biagio, Giorgio Bolzon, Laura Feudale, Gianluca Coidessa, Carolina Amadio, Alberto Brosich, Arnau Miró, Eva Alvarez, Paolo Lazzari, Cosimo Solidoro, Charikleia Oikonomou, and Anna Zacharioudaki
Ocean Sci., 19, 1483–1516, https://doi.org/10.5194/os-19-1483-2023, https://doi.org/10.5194/os-19-1483-2023, 2023
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The paper presents the Mediterranean Forecasting System evolution and performance developed in the framework of the Copernicus Marine Service.
Stefania A. Ciliberti, Enrique Alvarez Fanjul, Jay Pearlman, Kirsten Wilmer-Becker, Pierre Bahurel, Fabrice Ardhuin, Alain Arnaud, Mike Bell, Segolene Berthou, Laurent Bertino, Arthur Capet, Eric Chassignet, Stefano Ciavatta, Mauro Cirano, Emanuela Clementi, Gianpiero Cossarini, Gianpaolo Coro, Stuart Corney, Fraser Davidson, Marie Drevillon, Yann Drillet, Renaud Dussurget, Ghada El Serafy, Katja Fennel, Marcos Garcia Sotillo, Patrick Heimbach, Fabrice Hernandez, Patrick Hogan, Ibrahim Hoteit, Sudheer Joseph, Simon Josey, Pierre-Yves Le Traon, Simone Libralato, Marco Mancini, Pascal Matte, Angelique Melet, Yasumasa Miyazawa, Andrew M. Moore, Antonio Novellino, Andrew Porter, Heather Regan, Laia Romero, Andreas Schiller, John Siddorn, Joanna Staneva, Cecile Thomas-Courcoux, Marina Tonani, Jose Maria Garcia-Valdecasas, Jennifer Veitch, Karina von Schuckmann, Liying Wan, John Wilkin, and Romane Zufic
State Planet, 1-osr7, 2, https://doi.org/10.5194/sp-1-osr7-2-2023, https://doi.org/10.5194/sp-1-osr7-2-2023, 2023
Ali Aydogdu, Pietro Miraglio, Romain Escudier, Emanuela Clementi, and Simona Masina
State Planet, 1-osr7, 6, https://doi.org/10.5194/sp-1-osr7-6-2023, https://doi.org/10.5194/sp-1-osr7-6-2023, 2023
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This paper investigates the salt content, salinity anomaly and trend in the Mediterranean Sea using observational and reanalysis products. The salt content increases overall, while negative salinity anomalies appear in the western basin, especially around the upwelling regions. There is a large spread in the salinity estimates that is reduced with the emergence of the Argo profilers.
Pia Kolb, Anna Zorndt, Hans Burchard, Ulf Gräwe, and Frank Kösters
Ocean Sci., 18, 1725–1739, https://doi.org/10.5194/os-18-1725-2022, https://doi.org/10.5194/os-18-1725-2022, 2022
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River engineering measures greatly changed tidal dynamics in the Weser estuary. We studied the effect on saltwater intrusion with numerical models. Our analysis shows that a deepening of the navigation channel causes saltwater to intrude further into the Weser estuary. This effect is mostly masked by the natural variability of river discharge. In our study, it proved essential to recalibrate individual hindcast models due to differences in sediments, bed forms, and underlying bathymetric data.
Vera Fofonova, Tuomas Kärnä, Knut Klingbeil, Alexey Androsov, Ivan Kuznetsov, Dmitry Sidorenko, Sergey Danilov, Hans Burchard, and Karen Helen Wiltshire
Geosci. Model Dev., 14, 6945–6975, https://doi.org/10.5194/gmd-14-6945-2021, https://doi.org/10.5194/gmd-14-6945-2021, 2021
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We present a test case of river plume spreading to evaluate coastal ocean models. Our test case reveals the level of numerical mixing (due to parameterizations used and numerical treatment of processes in the model) and the ability of models to reproduce complex dynamics. The major result of our comparative study is that accuracy in reproducing the analytical solution depends less on the type of applied model architecture or numerical grid than it does on the type of advection scheme.
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Short summary
This study addresses a gap in understanding how turbulent mixing closure schemes and convective adjustments interplay in the Mediterranean Sea. Coupled ocean-wave simulations were performed with different mixing parameterizations and model results were compared against Argo float observations across different space and time scales. Results show that the Generalised Length Scale closure scheme best reproduces observed mixed layer properties and variability, without needing convective adjustment.
This study addresses a gap in understanding how turbulent mixing closure schemes and convective...
Special issue