Reto Knutti

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Reto Knutti (born May 7, 1973 in Saanen , Canton of Bern ) is a Swiss climatologist . He is professor of climate physics at the ETH Zurich and was one of the lead authors for the fourth and fifth assessment reports of the IPCC .

Live and act

Knutti studied physics at the University of Bern and graduated in 1999 with a diploma thesis on the parameterization of sub-scale mixing processes in a zonally averaged ocean model . In 2002 he did his doctorate with Thomas Stocker in the physical institute of the University of Bern with a thesis on "Modeling studies on the probability and predictability of future climate change". He later became an assistant professor at the ETH Zurich. In 2012 he was appointed associate professor for climate physics there, and in 2016 he was given a full professorship for climate physics in the same position.

His main research interests include changes in the climate system caused by greenhouse gases such as carbon dioxide as well as the further development, evaluation and application of climate models . Among other things, he deals with long-term projections of the climate system, the creation of climate scenarios, the interactions between the climate system and the carbon cycle , but also natural climate variability, the identification and attribution of causes for climate change or climate sensitivity . He also deals with heat absorption by oceans , extreme meteorological events and other climatological issues. As of March 2019, it has an h-index of 68.

Knutti is also considered an important member of the IPCC . As early as 2001, he worked as an author on the chapter on “Projections of Future Climate Developments” in the IPCC's Third Assessment Report . He contributed as an author to the 4th Assessment Report, published in 2007, and was the lead author of the chapter on “Global Climate Projections”. In the 5th assessment report published in 2013/14, he was among the authors of several chapters as well as coordinating lead author of the chapter on "Long-term climate change" and one of the lead authors of the technical summary of the working group "Physical and scientific principles".

Knutti also communicates findings from climate research to the general public and occasionally blogs in the future blog of ETH Zurich. In 2018 he was awarded the Dr. JE Brandenberger , one of the highest foundation prizes in Switzerland.

Like many other climate researchers, Knutti is attacked and defamed by climate skeptics and deniers . Among other things, he regularly receives disparaging e-mails in which z. B. demands that IPCC researchers like him be brought to prison or before the European Court of Justice . He was given a fake Facebook profile and a fake news page posted a fake interview with him, which was then circulated as real news in several states. In both cases he was given statements that he had not made. The aim of this disinformation was apparently to defame Knutti as a scientist .

Selected publications

  • Gregor Hagedorn , Peter Kalmus, Michael Mann, Sara Vicca, Joke Van den Berge, Jean-Pascal van Ypersele , Dominique Bourg, Jan Rotmans, Roope Kaaronen, Stefan Rahmstorf , Helga Kromp-Kolb , Gottfried Kirchengast , Reto Knutti, Sonia I. Seneviratne , Philippe Thalmann, Raven Cretney, Alison Green, Kevin Anderson, Martin Hedberg, Douglas Nilsson, Amita Kuttner, Katharine Hayhoe: Concerns of young protesters are justified. In: Science . Vol 364, Vol 364, 2019, doi : 10.1126 / science.aax3807 .
  • Medhaug et al .: Reconciling controversies about the 'global warming hiatus' . In: Nature . tape 545 , 2017, p. 41–47 , doi : 10.1038 / nature22315 .
  • Schleussner et al .: Science and policy characteristics of the Paris Agreement temperature goal . In: Nature Climate Change . tape 6 , 2016, p. 827-835 , doi : 10.1038 / nclimate3096 .
  • Seneviratne et al .: Allowable CO2 emissions based on regional and impact-related climate targets . In: Nature . tape 529 , 2016, p. 477-483 , doi : 10.1038 / nature16542 .
  • Knutti et al .: A scientific critique of the two-degree climate change target . In: Nature Geoscience . tape 9 , 2016, p. 13-18 , doi : 10.1038 / ngeo2595 .
  • Fischer, Knutti: Anthropogenic contribution to global occurrence of heavy-precipitation and high-temperature extremes . In: Nature Climate Change . tape 5 , 2015, p. 560-564 , doi : 10.1038 / nclimate2617 .
  • Friedlingstein et al .: Persistent growth of CO2 emissions and implications for reaching climate targets . In: Nature Geoscience . tape 7 , 2014, p. 709-715 , doi : 10.1038 / ngeo2248 .
  • Knutti, Sedláček: Robustness and uncertainties in the new CMIP5 climate model projections . In: Nature Climate Change . No. 3 , 2013, p. 369-373 , doi : 10.1038 / nclimate1716 .
  • Rogelj et al .: Global warming under old and new scenarios using IPCC climate sensitivity range estimates . In: Nature Climate Change . tape 2 , 2012, p. 248-253 , doi : 10.1038 / nclimate1385 .
  • Knutti et al .: Challenges in Combining Projections from Multiple Climate Models . In: Journal of Climate . tape 23 , no. 10 , 2010, p. 2739-2758 , doi : 10.1175 / 2009JCLI3361.1 .
  • Meinshausen et al .: Greenhouse gas emission targets for limiting global warming to 2 ° C . In: Nature . tape 458 , 2009, p. 1158–116 , doi : 10.1038 / nature08017 .
  • Salomon et al .: Irreversible climate change due to carbon dioxide emissions . In: Proceedings of the National Academy of Sciences . tape 106 , no. 6 , 2009, p. 1704-1709 , doi : 10.1073 / pnas.0812721106 .
  • Knutti, Hegerl: The equilibrium sensitivity of the Earth's temperature to radiation changes . In: Nature Geoscience . tape 1 , 2008, p. 735-743 , doi : 10.1038 / ngeo337 .
  • Knutti et al .: Constraints on radiative forcing and future climate change from observations and climate model ensembles . In: Nature . tape 416 , 2002, pp. 719-723 , doi : 10.1038 / 416719a .

Web links

Individual evidence

  1. ↑ a b Modeling studies on the probability and predictability of future climate change. Dissertation, curriculum vitae, p. 140 (PDF; 3.4 MB).
  2. ↑ New professors at ETH Zurich. ETH Zurich website. Retrieved November 1, 2017.
  3. ↑ Eight professors appointed. ETH Zurich website. Retrieved November 1, 2017.
  4. ↑ Reto Knutti on Google Scholar . Retrieved March 10, 2019.
  5. ↑ How to Slice a Global Carbon Pie? In: The New York Times , October 7, 2013. Retrieved November 1, 2017.
  6. ^ Reto Knutti Publications. ETH Zurich website . Retrieved November 1, 2017.
  7. ↑ Martin Läubli: «My name was abused» . In: Tages-Anzeiger , September 3, 2018. Retrieved September 3, 2018.
  8. ↑ See e.g. B. Reto Knutti: Research in times of fake news . In: Zukunftsblog ETH Zurich , August 17, 2018. Retrieved August 18, 2018.
  9. ↑ High distinction for ETH climate researchers . ETH Zurich website. Retrieved September 3, 2018.
  10. ↑ Carole Koch, Boas Ruh: The climate war: An international network of climate skeptics attacks researchers . In: NZZ on Sunday , March 9th, 2019. Retrieved on March 10th, 2019.
personal data
SURNAME Knutti, Reto
BRIEF DESCRIPTION Swiss climatologist
DATE OF BIRTH May 7th 1973
PLACE OF BIRTH Saanen , Canton of Bern