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

Summary, in 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.

• Författare: 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
• Avdelning/ar: Kvartärgeologi; MERGE: ModElling the Regional and Global Earth system
• Publiceringsår: 2015
• Språk: Engelska
• Sidor: 203-206
• Publikation/Tidskrift/Serie: Geology
• Volym: 43
• Issue: 3
• Länkar: http://dx.doi.org/10.1130/G36377.1
• Dokumenttyp: Artikel i tidskrift
• Förlag: Geological Society of America
• Ämne: Geology
• Aktiv: Published
• ISBN/ISSN/Övrigt: ISSN: 0091-7613