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

Hui Jiang*, Raimund Muscheler, Svante Björck, Marit Solveig Seidenkrantz, Jesper Olsen, Longbin Sha, Jesper Sjolte, Jón Eiríksson, Lihua Ran, Karen Luise Knudsen, Mads F. Knudsen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

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 seasurface 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.

Original languageEnglish
Pages (from-to)203-206
Number of pages4
JournalGeology
Volume43
Issue number3
DOIs
Publication statusPublished - 2 Feb 2015

Bibliographical note

Publisher Copyright:
© 2015 Geological Society of America.

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