Polar Oceans As Drivers of Glacial/Interglacial Atmospheric CO2 Concentrations I

Tuesday, 16 December 2014: 10:20 AM-12:20 PM
Chairs:  Anja Studer, Princeton University, Princeton, NJ, United States and Haojia Abby Ren, Columbia University, Piermont, NJ, United States
Primary Conveners:  Sam Jaccard, University of Bern, Bern, Switzerland
Co-conveners:  Anja Studer, Princeton University, Princeton, NJ, United States
OSPA Liaisons:  Alfredo Martinez-Garcia, ETH Zurich, Zurich, Switzerland

Abstracts Submitted to this Session:

10:20 AM
Atmosphere-ocean interactions in the Pacific Southern Ocean
Frank Lamy1, Rainer Gersonde1, Conor Purcell1,2, Gisela Winckler3, Ralf Tiedemann4 and Gregor Knorr1, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (2)School of Earth and Ocean Sciences, Cardiff University, Cardiff, United Kingdom, (3)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (4)Alfred-Wegener-Institute, Bremerhaven, Germany
10:35 AM
Boron Isotope Evidence for Oceanic CO2 Leakage During the Last Deglaciation
Gavin L Foster1, Miguel A. Martínez-Botí1, Gianluca Marino2, Patrizia Paola Isabella Ziveri3, Michael J Henehan4, James William Buchanan Rae5, Graham Mortyn3 and Derek Vance6, (1)University of Southampton, Southampton, United Kingdom, (2)Australian National University, Canberra, ACT, Australia, (3)Universitat Autònoma de Barcelona, Bellaterra, Spain, (4)Yale University, Department of Geology and Geophysics, New Haven, CT, United States, (5)University of St Andrews, St Andrews, United Kingdom, (6)ETH Swiss Federal Institute of Technology Zurich, ETH Zürich, Zurich, Switzerland
10:50 AM
Deglacial Atlantic Radiocarbon: A Southern Ocean Perspective
Laura F Robinson1, Andrea Burke2, Jess F Adkins3, Tianyu Chen1 and Peter Spooner1, (1)University of Bristol, Bristol, United Kingdom, (2)University of St Andrews, St Andrews, KY16, United Kingdom, (3)California Institute of Technology, Pasadena, CA, United States
11:05 AM
Climate sensitivity of the Antarctic ventilation
Takamitsu Ito and Jean Lynch-Stieglitz, Georgia Institute of Technology Main Campus, Earth and Atmospheric Sciences, Atlanta, GA, United States
11:20 AM
A Stratification Boomerang: Nonlinear Dependence of Deep Southern Ocean Ventilation on PCO2
Eric D Galbraith and Timothy M Merlis, McGill University, Montreal, QC, Canada
11:35 AM
Carbon cycle constraints during the last glacial/interglacial cycle derived from [CO2] and δ13Catm measurements from ice cores
Sarah Eggleston1, Jochen Schmitt1, Jerome Aime Chappellaz2, Fortunat Joos1 and Hubertus Fischer1, (1)University of Bern, Bern, Switzerland, (2)LGGE, St Martin d Heres, France
11:50 AM
A Millennial-Scale Reduction in Ventilation of the Deep South Atlantic During the Last Interglacial Period
Christopher T Hayes1, Alfredo Martinez-Garcia2, Adam Patrik Hasenfratz2, Sam Jaccard3, David A Hodell4, Daniel Mikhail Sigman5, Gerald Hermann Haug2 and Robert F Anderson6, (1)Massachusetts Institute of Technology, Earth Atmospheric and Planetary Sciences, Cambridge, MA, United States, (2)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (3)University of Bern, Bern, Switzerland, (4)University of Cambridge, Cambridge, United Kingdom, (5)Princeton University, Princeton, NJ, United States, (6)Lamont-Doherty Earth Obs, Palisades, NY, United States
12:05 PM
A 400-kyr record of millennial-scale carbonate preservation events in the Southern Ocean: Implications for Atlantic Meridional Overturning Circulation and atmospheric CO2
David A Hodell1, Maryline J Vautravers1, Steven Barker2, Christopher D Charles3 and Simon Crowhurst1, (1)University of Cambridge, Cambridge, United Kingdom, (2)Cardiff University, Cardiff, United Kingdom, (3)Scripps Institution of Oceanography, La Jolla, CA, United States