Evolution of surface and deep water conditions in the Antarctic Southern Ocean across the MPT

Adam Patrik Hasenfratz1, Sam Jaccard2, Alfredo Martinez-Garcia3, David A Hodell4, Derek Vance1, Stefano M Bernasconi1, Helga Flesche Kleiven5 and Gerald Hermann Haug1, (1)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (2)University of Bern, Institute of Geological Sciences and Oeschger Centre for Climate Change Research, Bern, Switzerland, (3)Max Planck Institute for Chemistry, Climate Geochemistry, Mainz, Germany, (4)University of Cambridge, Godwin Laboratory for Palaeoclimate Research, Department of Earth Sciences, Cambridge, United Kingdom, (5)University of Bergen, Department of Earth Science and the Bjerknes Centre for Climate Research, Bergen, Norway