Andreas Schmittner

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Andreas Schmittner

Andreas Schmittner (born December 17, 1966 in Bremen ) is a German physicist and climate scientist who researches and teaches as an assistant professor at Oregon State University at the College of Earth, Ocean, and Atmospheric Sciences .

biography

Andreas Schmittner graduated from the University of Bremen with a diploma in physics in 1996 and received his doctorate in 1999 from the University of Bern on the global atmospheric water cycle . Schmittner is married and has a daughter.

research

Schmittner has published in the field of climate research, among other things, on the possible consequences of future global warming on ocean currents and the marine ecosystem . Further publications deal with the effects of changes in the global ocean circulation on the nutrient cycle, plankton growth and oxygen concentrations in the ocean as well as on fluctuations in various greenhouse gases during the last ice age. A recent study seeks to improve our understanding of today's ocean circulation.

A study by Schmittner published in Science magazine in 2011 used paleoclimate data from the maximum phase of the last Ice Age in conjunction with climate model calculations to estimate climate sensitivity . At 2.3 ° C, the proposed value is lower than the estimate of 3 ° C in the IPCC's Fourth Assessment Report , but lies within the corresponding uncertainty range.

The work by Schmittner et al. Differs from comparable work mainly in that it has a smaller uncertainty range and has a higher upper limit on climate sensitivity than other work. According to the study, values ​​of climate sensitivity above 6 ° C can be regarded as extremely unlikely.

Subsequent scientific comments, including by Schmittner and his co-authors themselves, indicate that their model may have systematically underestimated the determined climate sensitivity due to structural uncertainties.

The corresponding report was received with interest by climate change deniers. Schmittner and his co-authors also summarized the study in a press release. In doing so, they in no way denied the human contribution to climate change. According to the results of the study, the probability of extreme climate changes in the near future is lower than previously assumed. However, drastic consequences are possible over land.

Awards and editing activities

  • 2006 Early Career Award, Ocean Sciences Section of the American Geophysical Union
  • Journal of Climate (01/2005 - 12/2008)
  • AGU Geophysical Monograph Series book “Ocean Circulation: Mechanisms and Impacts”, vol. 173, 2007.

Web links

Individual evidence

  1. ↑ Schmittner et al. 2008 Global Biogeochemical Cycles; Stocker & Schmittner 1997, Nature; Schmittner & Stocker 1999, J. Climate
  2. ↑ Schmittner 2005, Nature; Schmittner et al. 2007, Paleoceanography
  3. ↑ Schmittner & Galbraith, 2008, Nature
  4. ↑ Schmittner et al. 2011, J. Climate
  5. ↑ Schmittner et al: Climate Sensitivity Estimated from Temperature Reconstructions of the Last Glacial Maximum . In: Science Express . 2011, doi : 10.1126 / science.1203513 .
  6. ↑ IPCC: Climate Change 2007 Synthesis Report. 2.3 Climate sensitivity and feedback. (No longer available online.) Archived from the original on May 24, 2016 ; accessed on December 4, 2011 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.ipcc.ch
  7. ↑ IPCC: Climate Change 2007: Working Group I: The Physical Science Basis. Box 10.2: Equilibrium Climate Sensitivity. (No longer available online.) Archived from the original on January 19, 2012 ; accessed on December 4, 2011 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.ipcc.ch
  8. ↑ J. Fyke1, M. Eby: Comment on “Climate Sensitivity Estimated from Temperature Reconstructions of the Last Glacial Maximum” . In: Science . tape 337 , no. 6100 , September 2012, p. 1294 , doi : 10.1126 / science.1221371 .
  9. ↑ Andreas Schmittner et al: Response to Comment on Climate Sensitivity Estimated from Temperature Reconstructions of the Last Glacial Maximum . In: Science . 2012, doi : 10.1126 / science.1221634 .
  10. ↑ Anthony Watts on Watts Up With That: New study in Science shows climate sensitivity overestimated. November 25, 2011, accessed December 4, 2011 .
  11. ↑ Florian Rötzer, article on Telepolis: If global warming is less drastic than previously assumed. November 26, 2011, accessed December 4, 2011 .
  12. ^ A b Andreas Schmittner: Press release from Oregon State University. November 24, 2011, accessed December 4, 2011 .
personal data
SURNAME Schmittner, Andreas
BRIEF DESCRIPTION German physicist and climate scientist
DATE OF BIRTH 17th December 1966
PLACE OF BIRTH Bremen