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Solar forcing of Holocene summer sea-surface temperatures in the northern North Atlantic

Author:
  • Hui Jiang
  • Raimund Muscheler
  • Svante Björck
  • Marit-Solveig Seidenkrantz
  • Jesper Olsen
  • Longbin Sha
  • Jesper Sjolte
  • Jon Eiriksson
  • Lihua Ran
  • Karen-Luise Knudsen
  • Mads F. Knudsen
Publishing year: 2015
Language: English
Pages: 203-206
Publication/Series: Geology
Volume: 43
Issue: 3
Document type: Journal article
Publisher: Geological Society of America

Abstract english

Mounting evidence from proxy records suggests that variations in solar activity have played a significant role in triggering past climate changes. However, the mechanisms for sun-climate links remain a topic of debate. Here we present a high-resolution summer sea-surface temperature (SST) record covering the past 9300 yr from a site located at the present-day boundary between polar and Atlantic surface-water masses. The record is age constrained via the identification of 15 independently dated tephra markers from terrestrial archives, circumventing marine reservoir age variability problems. Our results indicate a close link between solar activity and SSTs in the northern North Atlantic during the past 4000 yr; they suggest that the climate system in this area is more susceptible to the influence of solar variations during cool periods with less vigorous ocean circulation. Furthermore, the high-resolution SST record indicates that climate in the North Atlantic regions follows solar activity variations on multidecadal to centennial time scales.

Keywords

  • Geology

Other

Published
  • ISSN: 0091-7613
Raimund Muscheler
E-mail: raimund.muscheler [at] geol.lu.se

Professor

Quaternary Sciences

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