Education and Professional History

Academic training


1994 Ph-D, Physical Oceanography, Hamburg University, Germany

1989 Diploma, Physical Oceanography, Hamburg University, Germany


Professional experience


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"




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


Cooperation/consultancy in national & international committees


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