Selected Services

Fridtjof Nansen Medal Committee of the European Geosciences Union, since 2013; Chair since 2016

Chair of the Scientific Advisory Board, Helmholtz Centre for Ocean Research Kiel (GEOMAR), since 2012

Alfred Wegener Union Medal Committee of the European Geosciences Union, 2011–2014 

Core Writing Team, IPCC Assessment Report 5, Synthesis Report, 20112014

Coordinating Lead Author, IPCC Assessment Report 5, Working Group I, Chapter 9: Evaluation of Climate Models, 20102013

Lead Author, IPCC Assessment Report 5, Technical Summary, 20102013

Meteorological Office Scientific Advisory Committee (MOSAC), UK, 20092011

Review Board, Geophysical Fluid Dynamics Laboratory, Princeton NJ, 2009

Scientific Advisory Board (Chair 20092011), Leibniz Institute of Marine Science (IFM-GEOMAR), 20082011

Programme Advisory Group, NERC Thematic Programme "Rapid WATCH", since 2008

Advisory Board, Excellence Cluster "The Future Ocean", University of Kiel, 20072011

Scientific Advisory Committee, European Centre for Medium-Range Weather Forecasts (ECMWF), 20062010

Joint Scientific Committee of the World Climate Research Programme (Vice Chair during 2012), 20052012

Scientific Advisory Board, Deutscher Wetterdienst (DWD), 2005–2013

Lead Guest Editor, Carl Wunsch Special Issue of Journal of Physical Oceanography, 20052007

German National Committee for Global Change Research (NKGCF), Germany, 20062008

Scientific Advisory Board, Alfred Wegener Center, University of Graz, 20052006

CLIVAR International Scientific Steering Group, 20042007

Lead Organiser, Royal Society Discussion Meeting “Abrupt Climate Change”, 4/5 February 2003

Reviewer, Sonderforschungsbereich 460, Kiel, 2002

Organising Committee, WOCE Final Conference (November 2002)

Steering Group, Norwegian Ocean Climate Programme, 20022004

Steering Group, NERC Thematic Programme "Rapid Climate Change", 20012008

Chair of Research Development Committee, SOC, 20012003

Advisory Panel, Goddard Institute for Space Studies, 20002003

US National Research Council Panel, "Abrupt Climate Change", 20002002

Organising Committee, workshop on "Subtropical Overturning Cells", 2000

Chairman of NERC working group, town meeting, and writing team for successful Thematic Programme proposal, "Abrupt Climate Change and the Stability of the Ocean's Thermohaline Circulation", 19992000

National Science Foundation and NOAA Atlantic Review Panels, 1994, 1996

Co-Chair, US Ocean CLIVAR Modelling Implementation Steering Committee, 19951998

US WOCE Scientific Steering Committee, 19951999

US WOCE Indian Ocean Scientific Steering Committee, 19931997

Convener, The Oceans' Thermohaline Circulation and Interdecadal Climate Variability; AGU Spring Meeting, Baltimore, May 1994