期刊
GEOLOGY
卷 43, 期 3, 页码 203-206出版社
GEOLOGICAL SOC AMER, INC
DOI: 10.1130/G36377.1
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资金
- National Science Foundation of China [41176048, 41406209]
- State Oceanic Administration of China [CHI-NARE2015-03-02]
- Danish Council for Independent Research FNU projects [09-072321, 12-126709]
- Royal Swedish Academy of Sciences through a grant from the Knut and Alice Wallenberg Foundation
- Swedish Research Council [2013-8421]
- European Union Seventh Framework Programme (FP7) Past4Future-Learning from the Past Climate [243908]
- Villum Fonden [00007263] Funding Source: researchfish
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.
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