PI002
Cross-scale processes in subtropical boundary current systems and adjacent regions: Impacts on climate and ocean ecosystems
Session ID#: 254695
Session Description:
Boundary current systems and their adjacent regions, like e.g. the Gulfstream, Kuroshio, and Agulhas system, are characterized by intense stirring and mixing across a wide range of spatial and temporal scales. These cross-scale processes impact Earth’s climate and ocean ecosystems by mediating the transport and exchange of momentum, heat, gases, nutrients, and organic matter. However, their transient and interactive nature makes it challenging to attribute specific impacts. This session focuses on approaches to understanding the impacts of cross-scale dynamics on biogeochemistry and air-sea exchange in subtropical boundary current systems and their adjacent regions. We welcome both disciplinary and interdisciplinary contributions that investigate how features like eddies, filaments, fronts, internal waves, and jets influence cross-scale energy and buoyancy fluxes, nutrient supply, export production, and the air-sea exchange of heat, gases, and momentum. We also encourage studies that place these dynamics in a broader context by linking them to large-scale ocean circulation, ventilation, and the uptake of heat and carbon. Contributions based on observational, autonomous, remote sensing, or modeling approaches are all welcome.
Co-Sponsor(s):
Index Terms:
4273 Physical and biogeochemical interactions [OCEANOGRAPHY: GENERAL]
4504 Air/sea interactions [OCEANOGRAPHY: PHYSICAL]
4572 Upper ocean and mixed layer processes [OCEANOGRAPHY: PHYSICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Student/Early Career Chair: Tanya Marshall, Princeton University, Geosciences, Princeton, United States
Primary Chair: René Schubert, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Co-chairs: Natasha Sarah Lucas, Bangor University, School of Ocean Sciences, Menai Bridge, United Kingdom, Nathanael Dossa, University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Miami, United States and Marcel du Plessis, University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden
The Relationship between Kuroshio Current Variability and Diel Changes in Acoustic Scattering Layers Observed in the East China Sea (1860083)
Hanna Na1,2, Lim Dahye1 and SeungYong Lee1, (1)Seoul National University, School of Earth and Environmental Sciences, Seoul, South Korea, (2)Seoul National University, Research Institute of Oceanography, Seoul, South Korea
The Role of Submesoscale Processes in the Decay of Agulhas Rings (1910299)
Leon-Cornelius Mock1, Arne Biastoch1,2, Sabrina Speich3 and René Schubert1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)University of Kiel, Kiel, Germany, (3)Ecole Normale Supérieure, Laboratoire de Météorologie Dynamique, Paris, France
Exploring fine-scale processes in the Agulhas Current system within the ERC Synergy project WHIRLS (1921849)
Arne Biastoch1,2, Franziska U. Schwarzkopf1, René Schubert1, Leon-Cornelius Mock1, Sabrina Speich3, Sebastiaan Swart4 and Sarah Fawcett5, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)University of Kiel, Kiel, Germany, (3)Laboratoire de Météorologie Dynamique – IPSL, Paris, France, (4)University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden, (5)University of Cape Town, Oceanography Department, Cape Town, South Africa
Characterizing the Central Structure of an Eddy-Ring Dipole in the Mozambique Channel from In-Situ Observations (2009056)
Pierrick Penven1, Jean Francois Ternon2, Steven Herbette1, Margaux Noyon3, Gildas Cambon1, Caroline Comby4, Pierre L’Hégaret1, Bernardino S Malauene5, Claire Ménesguen1, Fialho Nehama6, Gustav Rauntenbach7, Yula Rufino6 and Floriane Sudre4, (1)Laboratoire d’Océanographie Physique et Spatiale (LOPS), University of Brest, CNRS, Ifremer, IRD, IUEM, Plouzané, France, (2)Marine Biodiversity Exploitation et Conservation (MARBEC), University of Montpellier, CNRS, Ifremer, IRD, Sète, France, (3)Institute for Coastal and Marine Research (CMR), Nelson Mandela University, Gqeberha, South Africa, (4)Mediterranean Institute of Oceanography (MIO), Aix Marseille University, University of Toulon, CNRS, IRD, Marseille, France, (5)Instituto Oceanográfico de Moçambique (InOM), Maputo, Mozambique, (6)Escola Superior de Ciencias Marinhas e Costeiras (ESCMC), Quelimane, Mozambique, (7)South African Environmental Observation Network, Egagasini Node, Cape Town, South Africa
Materially Coherent Mesoscale Eddies: Evidence from Observations and Climate Significance (2011146)
Beatrice Altamura1, Sabrina Speich2, Artemis Ioannou1, Rémi Laxenaire3 and Lionel Guez1, (1)Laboratoire de Météorologie Dynamique (LMD), Paris, France, (2)Laboratoire de Météorologie Dynamique – IPSL, Paris, France, (3)MétéoFrance, Laboratoire de l'Atmosphère et des Cyclones (LACy), Saint Denis de la Réunion, France
Topographically generated submesoscale processes in the Tokara Strait (2013324)
Shuya Wang, Tohoku University, Sendai, Japan, Shoichiro Kido, Application Laboratory, JAMSTEC, Kanagawa, Japan, Xinyu Guo, Center for Marine Environmental Studies, Ehime University, Kashiwa, Japan, Yasumasa Miyazawa, JAMSTEC, Application Laboratory, Yokohama, Japan and Sergey Varlamov, JAMSTEC, Yokohama, Japan
ENSO shapes salinity regimes and fish migration in the China Seas (2016902)
Minhan Dai1, Zhixuan Wang2, Tangdong Qu3, Xianghui Guo1, Han Huang4, Jianyu Hu1, Guizhi Wang1, Jingfang Fan5, Jianping Gan2, Yue Liu1, Shiyun Lei1, Ling Cao1 and Xiaosong Chen6, (1)Xiamen University, State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen, China, (2)Hong Kong University of Science and Technology, Department of Ocean Science and Department of Mathematics, Hong Kong, China, (3)University of California Los Angeles, Los Angeles, CA, United States, (4)Beijing Normal University, School of Systems Science / Institute of Nonequilibrium Systems, Beijing, China, (5)Beijing Normal University, Beijing, China, (6)Zhejiang University, Institute for Advanced Study in Physics and School of Physics, Hangzhou, China
Ocean eddies leak water due to centrifugal effects (2018260)
René Schubert1, Maxime Ballarotta2, Regina Kurpiers1, Arne Biastoch1,3 and Franziska U. Schwarzkopf1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)CLS Collecte Localisation Satellites, Ramonville Saint Agne, France, (3)Kiel University, Kiel, Germany
3D Properties of Mesoscale Eddies in the Cape Basin Detected Using Machine Learning and Vertical Velocities Reconstruction from SWOT (2018513)
Elisa Carli1, Antonio Bonaduce2, Andrea Cipollone3, Florian Le Guillou4, Matteo Broccoli3, James Wyatt5, Sebastiaan Swart6 and Marie-Helene Rio4, (1)European Space Agency, Frascati, Italy, (2)Nansen Environmental and Remote Sensing Center, Bergen, Norway, (3)CMCC Foundation - Euro-Mediterranean Center on Climate Change, Bologna, Italy, (4)European Space Research Institute, Frascati, Italy, (5)Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia, (6)University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden
Surface boundary layer front variability in the Cape Basin and its relation to carbon fluxes (2020179)
Nikita Qosholo, University of Cape Town, Oceanography, Cape Town, South Africa, Isabelle S Giddy, University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden; University of Gothenburg, Marine Sciences, Gothenburg, Sweden, Sarah-Anne Nicholson, Southern Ocean Carbon-Climate Observatory, CSIR, Cape Town, South Africa and Moagabo Ragoasha, University of Cape Town, Cape Town, South Africa
Evaluating SWOT’s Performance in Capturing Mesoscale and Submesoscale dynamics in the Cape Basin (2026050)
Nathanael Dossa, University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Miami, United States, Lisa M Beal, University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Miami, FL, United States, Guillaume Novelli, University of Miami, Rosenstiel School of Marine and Atmospheric Sciences, Miami, FL, United States and J. Thomas Farrar, Woods Hole Oceanographic Inst, Physical Oceanography, Woods Hole, United States
Multi-Scale Surface Dispersion in the Cape Basin (2030647)
Guillaume Novelli, University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Ocean Science, Miami, United States, Lisa M Beal, University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Miami, FL, United States and Scientific Team of QUICCHE
More Eddying of the Agulhas Current will Tend to Cool Adjacent South African Shelf Waters (2030912)
Lisa M Beal, University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Miami, FL, United States and Kathryn L. Gunn, University of Southampton, School of Ocean and Earth Science, Southampton, United Kingdom
Western boundary current nutrient transports and ecosystem responses to climate change (2032576)
Zhen Lin, Advanced Institute for Marine Ecosystem Change; Tohoku University, Sendai, Japan, Keith B Rodgers, Advanced Institute for Marine Ecosystem Change, Sendai, Japan; Tohoku University, Sendai, Japan, Shang-Ping Xie, University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, Andrea J Fassbender, NOAA Pacific Marine Environmental Laboratory, Seattle, United States, Laurent Bopp, LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France and Olivier Aumont, LOPS, Laboratoire d'Océanographie Physique et Spatiale, LOPS, CNRS, Ifremer, IRD, UBO, Rue Dumont D'Urville, 29280, Plouzané, France, Paris, France
Investigating fine-scale nutrient supply in the Cape Basin using glider observations (2033668)
Olivia Dawson1, Tanya Marshall2, Bastien Queste3, Sebastiaan Swart4, Estel Font4, Mauro Pinto4 and Sarah Fawcett1, (1)University of Cape Town, Oceanography Department, Cape Town, South Africa, (2)Princeton University, Geosciences, Princeton, United States, (3)University of Gothenburg, Gothenburg, Sweden, (4)University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden
The nitrate isotopes faithfully trace Indian Ocean waters in Agulhas rings shed into the eastern South Atlantic. (2035148)
Emma Fahraeus1, Olivia Dawson1, Calvin Swart1, Tanya Marshall2 and Sarah Fawcett1, (1)University of Cape Town, Oceanography Department, Cape Town, South Africa, (2)Princeton University, Geosciences, Princeton, United States
Contributions of the Agulhas current for biogeochemistry in the Southern Ocean (2041820)
Eva Bucciarelli, LEMAR UMR6539 CNRS UBO IRD, IUEM, Plouzane, France, Pierrick Penven, Laboratoire d'Océanographie Physique et Spatiale, Univ. Brest/CNRS/IRD/Ifremer, Plouzané, France, Stéphane Pous, LOCEAN, Paris Cedex 05, France and Alessandro Tagliabue, University of Liverpool, Department of Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom
Exploring Seasonal Variability in Physical, Chemical, and Biological Processes from the Coastal Atlantic Ocean through the Gulf Stream via the TEAL-SHIPS Initiative (2043564)
Bradley B Tolar1,2, Melanie Cohn3, Christian Briseño-Avena1,2, Winifred Johnson2,4, Matthew McLean2,5 and Sutara H Suanda2,6, (1)University of North Carolina at Wilmington, Biology and Marine Biology, Wilmington, United States, (2)University of North Carolina at Wilmington, Center for Marine Science, Wilmington, United States, (3)University of North Carolina Wilmington, Center for Marine Science, Wilmington, United States, (4)University of North Carolina at Wilmington, Chemistry and Biochemistry, Wilmington, United States, (5)University of North Carolina Wilmington, Biology and Marine Biology, Wilmington, United States, (6)University of North Carolina at Wilmington, Physics and Physical Oceanography, Wilmington, United States
