Klaus Hasselmann
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Klaus Hasselmann (25 October 1931 - ) is a leading climate modeller. He is probably best known for developing the Hasselmann model of climate variability, where a system with a long memory (the ocean) integrates stochastic forcing, theyby transforming a white-noise signal into a red-noise one, thus explaining (without special assumptions) the ubiquitous red-noise signals seen in the climate.
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[edit] Professional background
From February 1975 to November 1999, Hasselmann was Director of the Max Planck Institute of Meteorology, Hamburg. Between January 1988 and November 1999 he was Scientific Director at the German High Performance Computing Centre for Climate- and Earth System Research, Hamburg. Currently he is Vice-Chairman of the European Climate Forum. The European Climate Forum has been founded in September 2001 by Prof. Carlo Jaeger and Prof. Klaus Hasselmann.
He has published papers on climate dynamics, stochastic processes, ocean waves, remote sensing, integrated assessment studies, and Unified field theory.
Hasselmann has won a number of awards over his career. In January 1971 the Sverdrup Medal of the American Meteorological Society; in May 1997 he was awarded the Symons Memorial Medal of the Royal Meteorological Society; in April 2002 he was awarded the Vilhelm Bjerknes Medal of the European Geophysical Society.
[edit] Metron Model
More recently, Hasselmann has ventured into fundamental physics, publishing what he calls the metron model, which he describes as possibly laying the foundation for a unified theory of fields and particles. In this paper, he suggests that in a higher gravity theory (a higher-dimensional generalization of general relativity), there may exist vacuum solutions having the nature of a soliton, which he calls metrons. Hasselmann speculates that these metron solutions might "reproduce all the basic field equations of quantum field theory, including not only the Maxwell-Dirac-Einstein system, but also all fields and symmetries of the Standard Model." He hopes that his theory, which he is still developing, will eventually "yield all particle properties and universal physical constants from first principles." However, the theory has never been published in, nor cited by, any peer-reviewed journal, and can be considered "fringe science".
[edit] References
[edit] Climate Change Modelling and Policy
- M. Welp, K. Hasselmann, C. Jaeger, Climate Change and Paths to Sustainability: the Role of Science- Based Stakeholder Dialogues, The Environment
- International Ad Hoc Detection and Attribution Group, Detecting and Attributing External Influences on the Climate System: A Review of Recent Advances, Journal of Climate, 18, 1291-1314, 2005
- M. Weber, V. Barth, K. Hasselmann, Multi-Actor Dynamic Assessment Model (MADIAM) of Induced Technological Change and Sustainable Economic Growth, Ecological Economics, 54, 306-327, 2005
- K. Hasselmann, M. Latif, G. Hooss, C. Azar, O. Edenhofer, C.C. Jaeger, O.M. Johannessen, C. Kemfert, M. Welp, A. Wokaun, The Challenge of Long-term Climate Change, Science, 302, 1923-1925, 2003
- Tamara S. Ledley, Eric T. Sundquist, Stephen E. Schwartz, Dorothy K. Hall, Jack D. Fellows, and Timothy L. Killeen Climate Change and Greenhouse Gases, EOS Vol. 80, No. 39, September 28, 1999, p. 453. (This review paper cites several papers coauthored by Hasselmann.)
- K. Hasselmann, Climate change: Linear and nonlinear signatures, Nature, 398, 755 - 756, 1999
- K. Hasselmann, Climate-change research after Kyoto, Nature, 390, 225 - 226, 1997
- K. Hasselmann, Are We Seeing Global Warming?, Science, 276, 914 - 915, 1997
[edit] About the Metron Model
- K. Hasselmann and S. Hasselmann, The metron model: a unified deterministic theory of fields and particles - a progress report, in Proceedings of 5th International Conference on Symmetry in Nonlinear Mathematical Physics, Kiev, June 23-29, 2003.
- K. Hasselmann, K.: The metron model: Towards a unified deterministic theory of fields and particles. Max Planck Institut for Meteorology Reports, No. 259, Hamburg 1998, 31 p.
- K. Hasselmann, K.: The metron model. Towards a unified deterministic theory of fields and particles. In: Understanding Physics. (Ed.) A. K. Richter. Copernicus Gesellschaft e. V., Katlenburg-Lindau (Germany) 1998, 154–186.
