Scaling of Atmosphere and Ocean Temperature Correlations in Observations and Climate Models

Phys. Rev. Lett. 90, 108501 – Published 11 March 2003
Klaus Fraedrich and Richard Blender

Abstract

Power-law scaling of near surface air temperature fluctuations and its geographical distribution is analyzed in 100-yr observations and in a 1000-yr simulation of the present-day climate with a complex atmosphere-ocean model. In observations and simulation detrended fluctuation analysis leads to the scaling exponent α1 over the oceans, α0.5 over the inner continents, and α0.65 in transition regions [spectrum S(f)f-β,β=2α-1]. Scaling up to decades is demonstrated in observations and coupled atmosphere-ocean models with complex and mixed-layer oceans. Only with the complex ocean model the simulated power laws extend up to centuries.

DOI: http://dx.doi.org/10.1103/PhysRevLett.90.108501

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  • Received 4 September 2002
  • Published 11 March 2003

© 2003 The American Physical Society

Authors & Affiliations

Klaus Fraedrich* and Richard Blender

  • Meteorologisches Institut, Universität Hamburg, Bundesstrasse 55, D-20146 Hamburg, Germany

  • *Electronic address: fraedrich@dkrz.de

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