1994 Ph-D, Physical Oceanography, Hamburg University, Germany
1989 Diploma, Physical Oceanography, Hamburg University, Germany
since 2004: Senior Scientist, MPI-M, Ocean in the Earth System Department, Research Group Leader
1999-2004: Scientist, MPI-M, Physical Climate System Department
1996-1999 Post Doc Scientist, Institute for Marine Sciences, Kiel, Ocean Physics Department,
1994-1996 Post Doc Scientist, Program in Atmosphere and Ocean Sciences, Princeton University, USA
1992-1995 PH D student, Institute for Marine Sciences, Hamburg University
1989-1992 Scientist, Federal Hydrographic Agency (BSH), Hamburg, Germany
2017-2019 Thompson-Reuters "Highly Cited Researcher"
@MPI-M
Since 2022 MPI-M Ombudsperson for Good Scientific Practice
Since 2021 Member of the ICON Advisory Group
2016-2020 Coordinator of the MPI-M Coupled Model Intercomparison Project activities
2010-2020 Co-chair of the Coupled Model Development Steering Group
2005-2007 Scientific Staff Representative to the Max Planck Society
Since 2018 World Climate Research Program (WCRP): Member of the Working Group on Coupled Modelling
Since 2009 Paleo Model Intercomparison Project, Member of the Scientific Steering Committee
2009-2013 WCRP/IGBP: Member of the PAGES/CLIVAR Intersection Working Group
2005-2007 WCRP Climate and Cryosphere Program: Member of the Arctic Climate Panel