Stefan Rahmstorf is Co-Head of Research Department on Earth System Analysis of the Potsdam Institute for Climate Impact Research (PIK) and Professor of Physics of the Oceans at the University of Potsdam.
A physicist and physical oceanographer by training, Stefan Rahmstorf's research focusses on paleoclimate, ocean circulation, sea level, extreme weather events and Earth System modeling.
After working at the New Zealand Oceanographic Institute and the Institute of Marine Science in Kiel, Stefan Rahmstorf joined PIK in 1996. He holds a professorship of Physics of the Oceans at the University of Potsdam since 2000. From 2004 to 2013 Stefan Rahmstorf advised the German government as a member of its Advisory Council on Global Change (WBGU).
He is not only an outstanding and highly cited scientist but also a sought-after science communicator and speaker, winning e.g. the Climate Communication Prize of the American Geophysical Union in 2017. He co-founded the award-winning Realclimate and KlimaLounge blogs and is Europe’s climate scientist with the most Twitter followers (2020).
Department
Working Group
Curriculum Vitae
Contact
14412 Potsdam
Stefan Rahmstorf is professor of Physics of the Oceans at Potsdam University and head of the Earth System Analysis department of the Potsdam Institute for Climate Impact Research in Germany. He is a member of the Academia Europaea and served the German government from 2004-2013 in the German Advisory Council on Global Change (WBGU). He was also one of the lead authors of the 4th Assessment Report of the IPCC. In 2007 he became an Honorary Fellow of the University of Wales and in 2010 a Fellow of the American Geophysical Union. In 2017 Stefan Rahmstorf was the first scientist outside the US to be awarded the Climate Communication Prize of the American Geophysical Union. He has published over 130 scientific papers (40 of which in the leading Nature and Science journals and PNAS) and co-authored four books. Available in English are Our Threatened Oceans and The Climate Crisis.
Positions
- Since 2005: Head of Research Department 1 Earth System Analysis (RD1) at PIK
- Since 2000: Full Professor of the Physics of the Oceans, University of Potsdam
- Since 1996: Research scientist at PIK
- 1991-1995: Research scientist at the Kiel Oceanographic Institute
- 1991: Post-doctoral scientist at the New Zealand Oceanographic Institute, Wellington (New Zealand)
Education
- 1998: Habilitation at Kiel University with a postdoctoral thesis on the Stability of the Atlantic thermohaline circulation
- 1987-1990: PhD (Doctor of Philosophy) at Victoria University and the New Zealand Oceanographic Institute, Wellington (New Zealand)
- 1986-1987: Master’s Thesis at University of Konstanz on general relativistic hydrodynamics with the title Stability of Density Fluctuations in an Expanding Universe in Harmonic Coordinates (diploma in physics with highest marks)
- 1983-1986: Physics studies (diploma) at Constance University
- 1982-1983: Post-graduate study in oceanography, University College of North Wales / Bangor University (Wales)
- 1980-1982: Physics studies (intermediate diploma) at Ulm and Constance universities
Major engagements and other professional roles (selection)
- Strategic board member of the Office for Climate Education (OCE) (since 2018)
- Scientific Advisory Board of National Geographic Germany (since 2012)
- Editorial Board of the open-access-journal Environmental Research Letters (since 2006)
- Member of the German Advisory Council on Global Change (WBGU, 2004-2013)
- NOAA panel on Abrupt Climate Change (2001-2008)
- Lead author of AR4 (2004-2007) and contributing author to TAR (1999-2001) for the Intergovernmental Panel on Climate Change (IPCC)
- Sustainability Council of the state government of Baden-Württemberg (2002-2005)
Curriculum Vitae (PDF)
Further Infos (Personal website of Stefan Rahmstorf)
Stefan Rahmstorf is an expert in ocean circulation, sea level, paleoclimate, extreme weather events and Earth system modelling. He is addressing the following main research questions:
- What can we learn from natural climate changes in Earth's history?
- How do climate change and ocean circulation interact in past and future?
- How has sea level changed in the past, and how fast will it rise with further warming?
- How are weather extremes changing, in particular linked to changes in ocean currents and the jet stream?
Selected Publications
Caesar, L., McCarthy, G. D., Thornalley, D. J. R., Cahill, N., Rahmstorf, S. (2021): Current Atlantic Meridional Overturning Circulation weakest in last millennium. - Nature Geoscience, 14, 3, 118-120.
Lenton, T. M., Rockström, J., Gaffney, O., Rahmstorf, S., Richardson, K., Steffen, W., Schellnhuber, H. J. (2019): Climate tipping points - too risky to bet against [Comment]. - Nature, 575, 7784, 592-595.
Caesar, L., Rahmstorf, S., Robinson, A., Feulner, G., Saba, V. (2018): Observed fingerprint of a weakening Atlantic Ocean overturning circulation. - Nature, 556, 7700, 191-196.
Mann, M. E., Rahmstorf, S., Kornhuber, K., Steinman, B. A., Miller, S. K., Petri, S., Coumou, D. (2018): Projected changes in persistent extreme summer weather events: The role of quasi-resonant amplification. - Science Advances, 4, 10, eaat3272.
Rahmstorf, S., Coumou, D. (2011): Increase of extreme events in a warming world. - Proceedings of the National Academy of Sciences of the United States of America (PNAS), 108, 44, 17905-17909.
Rahmstorf, S. (2007): A semi-empirical approach to projecting future sea-level rise. - Science, 315, 5810, 368-370.
Rahmstorf, S. (2002): Ocean circulation and climate during the past 120,000 years. - Nature, 419, 207-214.
Courses at Potsdam University since 2000:
- ZEIT Wissen Preis “Mut zur Nachhaltigkeit” (2019)
- Climate Communication Prize of the American Geophysical Union (2017)
- Fellow of the American Geophysical Union (2010)
- Environmental Media Award by the German Environment Aid (2007) (UmweltMedienpreis der Deutschen Umwelthilfe e.V. (DUH))
- Honorary Fellow of the University of Wales / Bangor University (2007)
- McDonnell Foundation Centennial Fellowship Award - one Million $ (1999)
- Royal Society Young Scientists Award (1990)
- Doctoral Fellowship by the German Academic Scholarship Foundation (Studienstiftung des deutschen Volkes) for PhD studies in New Zealand (1987)
Selected interviews and articles
International articles (selected):
- New York Times (Mar 02, 2021): In the Atlantic Ocean, Subtle Shifts Hint at Dramatic Dangers
- Guardian (Feb 26, 2021): Atlantic Ocean circulation at weakest in a millennium, say scientists
- Guardian (May 08, 2020): Sea levels could rise more than a metre by 2100, experts say
- Washington Post (April 11, 2018): The oceans’ circulation hasn’t been this sluggish in 1,000 years
- Washington Post (June 23, 2016): This chart perfectly explains what’s at stake in the quest to stop climate change
- New York Times (Feb. 22, 2016): Seas Are Rising at Fastest Rate in Last 28 Centuries
- New York Times (Nov. 13, 2010): As Glaciers Melt, Science Seeks Data on Rising Seas
- New Scientist (May 1, 1993): Science and politics in the greenhouse - Stefan Rahmstorf attempts to unravel a tangled debate
Opinion articles / blog posts:
-
Zeit (Jun 24, 2020): Sagen, was wir kommen sehen (German)
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Spektrum (Okt 28, 2020): Deutschland ist schon zwei Grad wärmer (German)
- SPIEGEL-Kommentare (German)
- RealClimate
- Klimalounge (German)
Selected interviews (German):
- Meisterstunde (Jul 30, 2018): Erderhitzung: Der Fall der Mauer gibt mir Hoffnung.
- Portal Wissen (2015): An der Klimafront
- Mare (Aug, 2012): Was ist wissenschaftliche Wahrheit?
Podcasts (selected):
- Radio Bayern (Feb 18, 2019) Wissenschaftler sollten sich öffentlich einmischen (German, 16min)
- Forschergeist (Jul 06, 2018): Ozeanographie und die düstere Zukunft unseres Planeten (German, 58min)
TV / Videos (selected):
- WIWIN (Aug 20, 2020): Sind Ergebnisse der Klimaforschung Fakt oder Meinung? (32min)
- ZDF (Dez 4, 2019): Was gibt es Neues von der Klimakonferenz? (58min)
- ZDF (Apr 3, 2019): Professor Rahmstorf nimmt das AfD-Klima-Quiz für Schüler unter die Lupe (14min)
- ZDF (Nov 06, 2017): Wie schnell könnte sich das angeheizte Weltklima wieder normalisieren? (1min)
- Earth101 (May 26, 2016): Sea level rise (eng, 32min) | Interview (eng,12min)