PL011:
Transient Eddies, Stationary Meanders and Southern Ocean Circulation and Tracer Transport


Session ID#: 27717

Session Description:
The Southern Ocean is both a critical conduit between the three mid-latitude oceans and a complex frontal system separating warm subtropical waters from cold Antarctic waters. Our understanding of the processes underlying the large-scale Southern Ocean meridional circulation and the associated transport of tracers continues to develop rapidly, while fundamental aspects of the zonal circulation, such as Drake Passage volume transport, are also being reconsidered.   

Recent studies have highlighted the important role of both stationary meanders that arise from  mean flow-topography interactions and transient mesoscale eddies in the Southern Ocean, particularly in the saturation and compensation of the wind-driven circulation and in the transport of mass and tracers across fronts. While bathymetry has long been understood to have a role in regulating zonal transport, an emerging view is that meridional transport and upwelling are primarily localized at hotspots tied to major topographic obstacles. These findings support a new paradigm for the Southern Ocean circulation that takes into account the full three-dimensional complexity of the flow.

In this session we welcome observational and modelling contributions that address transient eddies and stationary meanders, their impact on Southern Ocean circulation and transport, and their response to climate change.

Primary Chair:  Matthew W Hecht, Los Alamos National Laboratory, Los Alamos, NM, United States
Co-chairs:  Carolina Dufour, McGill University, Atmospheric and Oceanic Sciences, Montreal, QC, Canada, Alison R Gray, University of Washington, School of Oceanography, Seattle, WA, United States and Adele K Morrison, Australian National University, Research School of Earth Sciences, Canberra, Australia
Index Terms:

4520 Eddies and mesoscale processes [OCEANOGRAPHY: PHYSICAL]
4528 Fronts and jets [OCEANOGRAPHY: PHYSICAL]
4562 Topographic/bathymetric interactions [OCEANOGRAPHY: PHYSICAL]
4568 Turbulence, diffusion, and mixing processes [OCEANOGRAPHY: PHYSICAL]
Cross-Topics:
  • HE - High Latitude Environments
  • PC - Past, Present and Future Climate
  • PS - Physical Oceanography: Mesoscale and Smaller

Abstracts Submitted to this Session:

Julian Mak1, James R Maddison1, David Philip Marshall2, David Roy Munday3 and Scott D Bachman4, (1)University of Edinburgh, School of Mathematics, Edinburgh, United Kingdom, (2)University of Oxford, Oxford, United Kingdom, (3)British Antarctic Survey, Polar Oceans, Cambridge, United Kingdom, (4)National Center for Atmospheric Research, Boulder, CO, United States
Annie Foppert1, Kathleen A Donohue2, D. Randolph Watts1 and Karen L Tracey2, (1)University of Rhode Island, Narragansett, RI, United States, (2)Univ Rhode Island, Narragansett, RI, United States
D Randolph Watts1, Karen L Tracey2 and Kathleen A Donohue2, (1)University of Rhode Island, Narragansett, RI, United States, (2)Univ Rhode Island, Narragansett, RI, United States
Hailu Kong and Malte Jansen, University of Chicago, Chicago, IL, United States
Manuel Othon Gutierrez-Villanueva1, Teresa K Chereskin2 and Janet Sprintall1, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)SIO/UCSD, La Jolla, CA, United States
Alice Barthel, University of New South Wales, Climate Change Research Centre & ARC Centre of Excellence for Climate System Science, Sydney, NSW, Australia, Andrew M. Hogg, Research School of Earth Sciences & ARC Centre of Excellence for Climate System Science, Australian National University, Canberra, Australia and Stephanie Waterman, University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada
Bruno Buongiorno Nardelli, Consiglio Nazionale delle Ricerche, Italy, Sandrine Mulet, CLS Collecte Localisation Satellites, Plouzané, France and Daniele Iudicone, Stazione Zoologica Anton Dohrn, Naples, Italy
Jessica Masich, Scripps Institution of Oceanography, La Jolla, CA, United States, Teresa K Chereskin, SIO/UCSD, La Jolla, CA, United States and Matthew R Mazloff, SIO, La Jolla, CA, United States
Sina Khani1, Alistair Adcroft1 and Malte Jansen2, (1)Princeton University, Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (2)The University of Chicago, Geophysical Sciences, Chicago, IL, United States
Igor V Kamenkovich, RSMAS, Miami, FL, United States, Zulema D Garraffo, IMSG, College Park, MD, United States, Romain Laurent Pennel, LMD/IPSL Ecole Polytechnique, Palaiseau, France and Rana A Fine, University of Miami, Miami, FL, United States
Matthew W Hecht and Wilbert Weijer, Los Alamos National Laboratory, Los Alamos, NM, United States
Ramkrushnbhai Patel1, Helen Elizabeth Phillips2, Peter G Strutton3, Andrew Lenton4 and Joan Llort1, (1)University of Tasmania, Institute for Marine and Antarctic Studies (IMAS), ARC Centre of Excellence for Climate System Science, Hobart, Australia, (2)University of Tasmania, Institute for Marine and Antarctic Studies, IMAS, Hobart, TAS, Australia, (3)University of Tasmania, Institute for Marine and Antarctic Studies (IMAS), ARC Centre of Excellence for Climate System Science, Hobart, TAS, Australia, (4)CSIRO Hobart, Hobart, Australia
Sebastien Moreau, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, Australia, Alice Della Penna, Applied Physics Laboratory University of Washington, Air-Sea Interaction and Remote Sensing, Seattle, WA, United States, Joan Llort, University of Tasmania, Institute for Marine and Antarctic Studies (IMAS), ARC Centre of Excellence for Climate System Science, Hobart, Australia, Helen Elizabeth Phillips, University of Tasmania, Institute for Marine and Antarctic Studies, IMAS, Hobart, TAS, Australia, Richard Matear, CSIRO, Oceans & Atmosphere, Hobart, Australia, Philip W Boyd, IMAS, ACE-CRC, University of Tasmania, Hobart, Australia, Clothilde Langlais, CSIRO Marine and Atmospheric Research Hobart, Hobart, Australia, Ramkrushnbhai Patel, Lansdowne, PA, United States, Thomas W. Trull, Commonwealth Scientific and Industrial Research Organisation, Marine and Atmospheric Research, Antarctic Climate Ecosystems Cooperative Research Centre, Hobart, Australia, Andrew Lenton, CSIRO Hobart, Hobart, Australia, Bronte D Tilbrook, CSIRO Marine and Atmospheric Research, Hobart, Australia and Peter G Strutton, University of Tasmania, Institute for Marine and Antarctic Studies (IMAS), ARC Centre of Excellence for Climate System Science, Hobart, TAS, Australia
Sukyoung Lee and Qian LI, Pennsylvania State University Main Campus, University Park, PA, United States
Qian LI1, Sukyoung Lee1 and Matthew R Mazloff2, (1)Pennsylvania State University Main Campus, University Park, PA, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States
Peter G Strutton1, Sebastien Moreau2, Joan Llort3, Ramkrushnbhai Patel2, Alice Della Penna4, Helen Elizabeth Phillips5, Hannah Dawson2 and Peter Gaube6, (1)University of Tasmania, Institute for Marine and Antarctic Studies (IMAS), ARC Centre of Excellence for Climate System Science, Hobart, TAS, Australia, (2)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, Australia, (3)University of Tasmania, Institute for Marine and Antarctic Studies (IMAS), ARC Centre of Excellence for Climate System Science, Hobart, Australia, (4)Applied Physics Laboratory University of Washington, Air-Sea Interaction and Remote Sensing, Seattle, WA, United States, (5)University of Tasmania, Institute for Marine and Antarctic Studies, IMAS, Hobart, TAS, Australia, (6)Applied Physics Laboratory at the University of Washington, Air-Sea Interaction and Remote Sensing, Seattle, WA, United States
Madeleine K Youngs1, Andrew F Thompson2 and Ayah Lazar2, (1)Massachusetts Institute of Technology, Cambridge, MA, United States, (2)California Institute of Technology, Pasadena, CA, United States