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AGU: Geophysical Research Letters

 

Keywords

  • ice core
  • oxygen isotope
  • climate forcing

Index Terms

  • Atmospheric Processes: Paleoclimatology
  • Paleoceanography: Ice cores
  • Global Change: Climate variability
  • Geochemistry: Stable isotope geochemistry

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 36, L01808, 5 PP., 2009
doi:10.1029/2008GL035930

Temperature response in the Altai region lags solar forcing

Anja Eichler

Paul Scherrer Institute, Villigen, Switzerland

Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland

Susanne Olivier

Paul Scherrer Institute, Villigen, Switzerland

Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland

Keith Henderson

Paul Scherrer Institute, Villigen, Switzerland

Andreas Laube

Paul Scherrer Institute, Villigen, Switzerland

Jürg Beer

Department of Surface Waters, EAWAG, Dübendorf, Switzerland

Tatyana Papina

Institute for Water and Environmental Problems, Barnaul, Russia

Heinz W. Gäggeler

Paul Scherrer Institute, Villigen, Switzerland

Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland

Margit Schwikowski

Paul Scherrer Institute, Villigen, Switzerland

Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland

The role of the sun on Earth's climate variability is still much debated. Here we present an ice core oxygen isotope record from the continental Siberian Altai, serving as a high-resolution temperature proxy for the last 750 years. The strong correlation between reconstructed temperature and solar activity suggests solar forcing as a main driver for temperature variations during the period 1250–1850 in this region. The precisely dated record allowed for the identification of a 10–30 year lag between solar forcing and temperature response, underlining the importance of indirect sun-climate mechanisms involving ocean-induced changes in atmospheric circulation. Solar contribution to temperature change became less important during industrial period 1850–2000 in the Altai region.

Received 6 September 2008; accepted 5 December 2008; published 15 January 2009.

Citation: Eichler, A., S. Olivier, K. Henderson, A. Laube, J. Beer, T. Papina, H. W. Gäggeler, and M. Schwikowski (2009), Temperature response in the Altai region lags solar forcing, Geophys. Res. Lett., 36, L01808, doi:10.1029/2008GL035930.

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