Article
Oceanography
Wenjin Sun, Jingsong Yang, Wei Tan, Yu Liu, Baojun Zhao, Yijun He, Changming Dong
Summary: The study found that the eddy diffusivity of mesoscale eddies in the Southern Ocean varies significantly in space and is closely related to the activity of coherent mesoscale eddies, with the intensity of mesoscale eddies gradually decreasing.
ACTA OCEANOLOGICA SINICA
(2021)
Article
Geosciences, Multidisciplinary
J. Mak, D. P. Marshall, G. Madec, J. R. Maddison
Summary: The global ocean overturning circulation is crucial for climate evolution and is sensitive to the mesoscale eddy energy dissipation timescale. This study highlights the importance of constraining uncertainties associated with eddy energy dissipation for climate model projections over centennial timescales and paleoclimate simulations over millennial timescales.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Alejandra Elisa Hernandez-Magana, Yan Liu, Pavla Debeljak, Olivier Crispi, Barbara Marie, Coco Koedooder, Ingrid Obernosterer
Summary: Natural iron fertilization promotes phytoplankton blooms above the Kerguelen plateau in the Southern Ocean, with distinct heterotrophic prokaryotic communities associated with these blooms. The prokaryotic community composition in the region during late Austral summer shows differences in on-plateau and off-plateau sites, with specific taxa dominating in each location. Abiotic and biotic factors likely play a role in shaping the prokaryotic community composition in Kerguelen plateau waters.
JOURNAL OF MARINE SYSTEMS
(2021)
Article
Geosciences, Multidisciplinary
A. Solodoch, A. L. Stewart, A. McC. Hogg, A. K. Morrison, A. E. Kiss, A. F. Thompson, S. G. Purkey, L. Cimoli
Summary: This study uses a global high-resolution ocean/sea-ice simulation and passive tracer deployments to examine the export pathways of Antarctic Bottom Water (AABW). The results show that AABW from different source regions are blended during their export, with Weddell Sea- and Prydz Bay-sourced AABW mainly exported to the Atlantic and Indian Oceans, while Ross Sea- and Adelie Land-sourced AABW mainly exported to the Pacific Ocean. This has important implications for the three-dimensional structure of the global overturning circulation.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Oceanography
Kun Zhang, Qiang Wang, Baoshu Yin, Dezhou Yang, Lina Yang
Summary: This study reveals that deep vertical velocity is a critical factor causing deficiencies in Sverdrup theory, and its influence in the low-latitude western Pacific is significant. The spatial pattern of these vertical velocities is modulated by ocean topography and deep meridional currents. Furthermore, the meridional non-Sverdrup transport related to deep vertical velocity is widespread and undergoes remarkable multidecadal variation on a global scale.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2023)
Article
Multidisciplinary Sciences
Tiffany A. Shaw, Osamu Miyawakia, Aaron Donohoe
Summary: The Southern Hemisphere has more storms than the Northern Hemisphere due to equal contributions from topography and ocean circulation. Understanding the energy transfer between land and ocean and its effects on future storminess is crucial. The storminess in the Southern Hemisphere is linked to changes in ocean energy transport in the Southern Ocean, while storminess in the Northern Hemisphere has not significantly changed due to opposing oceanic and radiative changes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Environmental Sciences
Hirofumi Tazoe, Hajime Obata, Takuya Hara, Mutsuo Inoue, Takahiro Tanaka, Jun Nishioka
Summary: For the first time, the vertical activity concentration distributions of radium isotopes, Ra-226 and Ra-228, were obtained in the western Subarctic Pacific Gyre (WSAG). The distributions were influenced by upwelling of deeper water, vertical mixing, and lateral transport.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Meteorology & Atmospheric Sciences
Lavinia Patara, Claus W. Boening, Toste Tanhua
Summary: Enhanced Southern Ocean ventilation in recent decades is suggested as a relevant modulator of ocean heat and carbon uptake changes. This study focuses on midlatitude ventilation changes in the Southern Ocean from the 1960s to the 2010s, showing a multidecadal fluctuation with a decrease until the 1980s-90s and subsequent increase. Wind stress is identified as the main driver of ventilation changes, while buoyancy forcing modulates its trend and decadal variability.
JOURNAL OF CLIMATE
(2021)
Article
Oceanography
Sijia Zou, Amy S. Bower, Heather Furey, Robert S. Pickart, Loic Houpert, N. Penny Holliday
Summary: The study presents new observational evidence of deep cyclonic eddies around southern Greenland and into the Labrador Sea, with varying rotational speeds and periods, potential for water transport, and a possible source from the Denmark Strait outflow. The research highlights the importance of further investigations on (sub)mesoscale dynamics in the region.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2021)
Article
Oceanography
Madeleine K. Youngs, Glenn R. Flierl
Summary: The Southern Ocean's contribution to global air-sea carbon fluxes is significant, with estimates suggesting it makes up to 40% of oceanic anthropogenic carbon dioxide uptake. Recent studies highlight the importance of vertical velocities and tracer transport near bottom topography in the Southern Ocean overturning. An idealized channel model was used in this study to visualize the net overturning transport and to identify three main drivers of transport: wind-driven Ekman pumping, standing eddies, and transient eddies localized near the topography.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2023)
Article
Geosciences, Multidisciplinary
Igor Kamenkovich, Pavel Berloff, Michael Haigh, Luolin Sun, Yueyang Lu
Summary: The stirring of water by mesoscale currents leads to large-scale transport of oceanic properties, with eddy-induced transports related to tracer gradients using turbulent diffusion. The study focuses on the complexity of the K-tensor and its components, showing they are dependent on space, time, direction, and tracer. Results suggest upgradient eddy fluxes and the importance of all tensor components, calling for a reconsideration of how eddy transports are estimated and included in climate models.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Oceanography
Xiaoting Yang, Eli Tziperman
Summary: Research shows that while Southern Ocean winds and eddies contribute to the stratification of the middepth interior, the exponential shape of the profiles also involves interior mixing.
JOURNAL OF PHYSICAL OCEANOGRAPHY
(2022)
Article
Geosciences, Multidisciplinary
Natasha Henschke, Yves Cherel, Cedric Cotte, Boris Espinasse, Brian P. Hunt, Evgeny A. Pakhomov
Summary: The study focused on the vertical distribution and size-dependent migrations of the pelagic tunicate Salpa thompsoni in the Southern Indian Ocean, specifically on the Kerguelen Plateau. It found that smaller blastozooids and oozoids were the strongest vertical migrators, while larger counterparts did not show consistent diel cycles in their vertical distribution. This suggests high predation pressure on the smallest blastozooids and oozoids.
JOURNAL OF MARINE SYSTEMS
(2021)
Article
Environmental Sciences
Cheng Liu, Jianping Huang, Xiao-Ming Hu, Cheng Hu, Yongwei Wang, Xiaozhen Fang, Li Luo, Hong-Wei Xiao, Hua-Yun Xiao
Summary: This study evaluated the vertical profiles of PM2.5 simulated by WRF-Chem using measurements from UAV, showing that the model performs well in capturing PM2.5 vertical profiles under convective conditions during the daytime but not at night. By increasing the minimum value of eddy diffusivity, the overpredictions of surface PM2.5 and vertical profiles were substantially improved. This indicates the importance of refining parameterization schemes for reproducing ABL vertical structures and PM2.5 concentrations, especially under heavy pollution conditions in the NBL.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Geography, Physical
M. Civel-Mazens, X. Crosta, G. Cortese, E. Michel, A. Mazaud, O. Ther, M. Ikehara, T. Itaki
Summary: In the Southern Ocean, climate-driven latitudinal migrations of the Antarctic Circumpolar Current frontal system impact ocean circulation and primary productivity. The Antarctic Polar Front's migrations influence nutrient redistribution, biodiversity, and the soft tissue carbon pump in the modern Southern Ocean.
GLOBAL AND PLANETARY CHANGE
(2021)
Article
Multidisciplinary Sciences
Matthew A. Charette, Phoebe J. Lam, Maeve C. Lohan, Eun Young Kwon, Vanessa Hatje, Catherine Jeandel, Alan M. Shiller, Gregory A. Cutter, Alex Thomas, Philip W. Boyd, William B. Homoky, Angela Milne, Helmuth Thomas, Per S. Andersson, Don Porcelli, Takahiro Tanaka, Walter Geibert, Frank Dehairs, Jordi Garcia-Orellana
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2016)
Article
Multidisciplinary Sciences
William B. Homoky, Thomas Weber, William M. Berelson, Tim M. Conway, Gideon M. Henderson, Marco van Hulten, Catherine Jeandel, Silke Severmann, Alessandro Tagliabue
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2016)
Article
Multidisciplinary Sciences
Catherine Jeandel
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2016)
Article
Geochemistry & Geophysics
Francois Lacan, Kazuyo Tachikawa, Catherine Jeandel
Article
Geosciences, Multidisciplinary
Eric H. Oelkers, Morgan T. Jones, Christopher R. Pearce, Catherine Jeandel, Eydis Salome Eiriksdottir, Sigurdur R. Gislason
COMPTES RENDUS GEOSCIENCE
(2012)
Article
Geochemistry & Geophysics
Morgan T. Jones, Christopher R. Pearce, Catherine Jeandel, Sigurour R. Gislason, Eydis S. Eiriksdottir, Vasileios Mavromatis, Eric H. Oelkers
EARTH AND PLANETARY SCIENCE LETTERS
(2012)
Article
Geochemistry & Geophysics
Christopher R. Pearce, Morgan T. Jones, Eric H. Oelkers, Catherine Pradoux, Catherine Jeandel
EARTH AND PLANETARY SCIENCE LETTERS
(2013)
Article
Geochemistry & Geophysics
C. Jeandel, H. Delattre, M. Grenier, C. Pradoux, F. Lacan
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2013)
Article
Geochemistry & Geophysics
E. Garcia-Solsona, C. Jeandel, M. Labatut, F. Lacan, D. Vance, V. Chavagnac, C. Pradoux
GEOCHIMICA ET COSMOCHIMICA ACTA
(2014)
Article
Chemistry, Analytical
Tristan C. C. Rousseau, Jeroen E. Sonke, Jerome Chmeleff, Frederic Candaudap, Francois Lacan, Geraldo Boaventura, Patrick Seyler, Catherine Jeandel
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2013)
Article
Limnology
Tina van de Flierdt, Katharina Pahnke, Hiroshi Amakawa, Per Andersson, Chandranath Basak, Barry Coles, Christophe Colin, Kirsty Crocket, Martin Frank, Norbert Frank, Steven L. Goldstein, Vineet Goswami, Brian A. Haley, Ed C. Hathorne, Sidney R. Hemming, Gideon M. Henderson, Catherine Jeandel, Kevin Jones, Katharina Kreissig, Francois Lacan, Myriam Lambelet, Ellen E. Martin, Derrick R. Newkirk, Haijme Obata, Leopoldo Pena, Alexander M. Piotrowski, Catherine Pradoux, Howie D. Scher, Hans Schoberg, Sunil Kumar Singh, Torben Stichel, Hirofumi Tazoe, Derek Vance, Jingjing Yang
LIMNOLOGY AND OCEANOGRAPHY-METHODS
(2012)
Article
Oceanography
Robert F. Anderson, Edward Mawji, Gregory A. Cutter, Christopher I. Measures, Catherine Jeandel
Article
Oceanography
Melanie Grenier, Catherine Jeandel, Francois Lacan, Derek Vance, Celia Venchiarutti, Alexandre Cros, Sophie Cravatte
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2013)
Article
Oceanography
Simon Barbot, Marion Lagarde, Florent Lyard, Patrick Marsaleix, Pascale Lherminier, Catherine Jeandel
Summary: This study provides new insights into the interpretation of GEOVIDE particle measurements, identifying potential resuspension sites caused by internal tides along the western Iberian shelf slope. The study uses a regional model and reanalysis method to determine the transport pathways for particles from the resuspension sites to the GEOVIDE stations. It highlights the importance of using a numerical tidal model to accurately identify resuspension sites, as the commonly used bathymetry slope method is not sufficient.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Ecology
J. Bown, M. Boye, P. Laan, A. R. Bowie, Y. -H. Park, C. Jeandel, D. M. Nelson
Article
Oceanography
Jason A. Law, Robert H. Weisberg, Yonggang Liu, Dennis A. Mayer, Jeffrey C. Donovan
Summary: Time series data from a moored array of sensors are used to describe the long-term mean circulation and seasonal variations on the West Florida Continental Shelf. The observations reveal a coherent shelf-wide circulation pattern with alongshore and down-coast flow, and a coastal jet separating an upwelling region from a downwelling region influenced by the deeper ocean.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2024)