Processes occurring at or close to the ice-ocean interface around Antarctica influence the state and circulation of a large proportion of the global ocean. The annual cycle of sea ice formation, export and melt is critical to the formation of both Antarctic Bottom Water and Antarctic Intermediate Water, which together fill more than half of the global sub-surface ocean. Inflow of warm Circumpolar Deep Water beneath floating shelves of marine-terminating glaciers promotes retreat of the grounded portion of the ice sheet, and thus sea level rise. Though historically limited by the prohibitive costs of in situ observations and high-resolution models, recent field campaigns and focused model development efforts are now rapidly advancing our understanding of these processes. This session will showcase recent advances in understanding the physical processes occurring in the Antarctic marginal seas, across the Antarctic continental shelf and slope, and within the ocean cavities beneath floating ice shelves. Studies based on observations, numerical models and theory are all welcome. The authors particularly encourage submissions addressing ocean-sea ice interactions, warm water pathways from continental slope to grounding zones, and inter-connectivity between sectors of the Antarctic margins and the broader Southern Ocean.
Primary Chair: Andrew Stewart, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States
Co-chairs: Louise C Biddle, University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden, Matthew H England, Univ New South Wales, Sydney, NSW, Australia and Andrew F Thompson, California Institute of Technology, Pasadena, CA, United States
Primary Liaison: Andrew Stewart, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States
Moderators: Matthew H England, Univ New South Wales, Sydney, NSW, Australia and Andrew F Thompson, California Institute of Technology, Pasadena, CA, United States
Student Paper Review Liaison: Andrew F Thompson, California Institute of Technology, Pasadena, CA, United States
Antarctic Glacial Melt as a Driver of Recent Southern Ocean Climate Trends (649473)
Craig Daniel Rye1, John C Marshall2, Maxwell Kelley3, Gary L Russell4, Larissa Nazarenko1, Gavin A Schmidt5 and James E Hansen6, (1)NASA Goddard Institute for Space Studies, New York, NY, United States, (2)MIT, Cambridge, United States, (3)NASA Goddard Institute for Space Studies, New York, United States, (4)NASA Goddard Institute for Space Studies, New York City, NY, United States, (5)NASA/GISS, New York, United States, (6)NASA GISS/Columbia University, New York, NY, United States
Automated Weddell Sea iceberg tracking with a machine learning approach applied to SAR imagery (640369)
Mauro Barbat1, Thomas Rackow2, Christine Wesche2, Hartmut H Hellmer3 and Mauricio M Mata4, (1)Federal University of Rio Grande-FURG, Institute of Oceanography, Rio Grande, Brazil, (2)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (3)Alfred Wegener Institute, Bremerhaven, Germany, (4)Federal University of Rio Grande, Instituto de Oceanografia, Rio Grande, Brazil
Direct Numerical Simulations of freezing under a sloping ice-face. (639123)
Mainak Mondal, IMAS, UTAS, Hobart, TAS, Australia, Benjamin Keith Galton-Fenzi, Australian Antarctic Division, Hobart, TAS, Australia, Petra Heil, Univ Tasmania, Hobart, TAS, Australia and Bishakhdatta Gayen, University of Melbourne, Mechanical Engineering, Melbourne, Australia
Historical Variability of Circumpolar Deep Water in the Bellingshausen Sea, Antarctica (653794)
Christina LoBuglio1, Lena M. Schulze Chretien1, Andrew F Thompson2 and Kevin Speer3, (1)Jacksonville University, Marine Science Research Institute, Jacksonville, FL, United States, (2)California Institute of Technology, Pasadena, CA, United States, (3)Florida State University, Geophysical Fluid Dynamics Institute(GFDI), Department of Scientific Computing(DSC), Tallahassee, United States
Influence of Antarctic Slope Current variability on modified Circumpolar Deep Water Intrusions in Prydz Bay, East Antarctica (652942)
Ruibin Xia, Nanjing University of Information Science & Technology, Nanjing, China, Zhaomin Wang, Hohai University, College of Oceanography, Nanjing, China, Andrew Stewart, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States, Chengyan Liu, Nanjing University of Information Science and Technology, Nanjing, China and Chen Cheng, Nanjing University of Information Science & Technology, School of Marine Sciences, Nanjing, China
Localized Basal Melting Near the Ross Ice Shelf Front: Interplay of Bathymetry, Ocean Heat Fluxes, and Ice Damage History (657419)
David Felton Porter, Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Kirsty J Tinto, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, Robin Elizabeth Bell, Lamont-Doherty Earth Observatory of Columbia University, Palisades, United States, Scott R Springer, Earth & Space Research, Seattle, WA, United States, Laurence Padman, Earth & Space Research, Corvallis, United States, Helen Amanda Fricker, University of California, San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, Cyrille Mosbeux, LGGE Laboratoire de Glaciologie et Géophysique de l’Environnement, Saint Martin d'Hères, France and Indrani Das, Lamont -Doherty Earth Observatory, Palisades, NY, United States
Melting and Freezing Beneath Larsen C Ice Shelf (642925)
Lianne Harrison1,2, Paul Holland1, Karen J. Heywood3 and Keith W Nicholls1, (1)British Antarctic Survey, Cambridge, United Kingdom, (2)University of East Anglia, Norwich, NR4, United Kingdom, (3)University of East Anglia, Centre for Ocean and Atmospheric Sciences, School of Environmental Science, Norwich, United Kingdom
Onset and Energetics of Double-Diffusive Convection in the Ice Shelf/Ocean Boundary Layer (646663)
Leo Middleton, Woods Hole Oceanographic Institution, Woods Hole, United States, Catherine Ann Vreugdenhil, University of Melbourne, Melbourne, Australia, Paul Holland, British Antarctic Survey, Cambridge, United Kingdom and John Ryan Taylor, University of Cambridge, DAMTP, Cambridge, United Kingdom
