H/T to Chaeremon for flagging up this recent paper from Jiang et al which gets better detail on solar forcing of climate. Paywalled, abstract only, but there is a fugure from Jiang’s earlier 2005 paper covering 1200 years around Iceland.
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.
- Received 21 October 2014.
- Revision received 9 December 2014.
- Accepted 10 December 2014.
- Hui Jiang1,
- Raimund Muscheler2,
- Svante Björck2,
- Marit-Solveig Seidenkrantz3,
- Jesper Olsen4,
- Longbin Sha1,3,
- Jesper Sjolte2,
- Jón Eiríksson5,
- Lihua Ran6,
- Karen-Luise Knudsen3 and
- Mads F. Knudsen3
1Key Laboratory of Geographic Information Science and State Key Laboratory of Estuarine and Coastal Research, East China Normal University, 200062 Shanghai, People’s Republic of China
2Department of Geology, Quaternary Sciences, Lund University, Sölvegatan 12, 22362 Lund, Sweden
3Centre for Past Climate Studies and Arctic Research Centre, Department of Geoscience, Aarhus University, DK-8000 Aarhus C, Denmark
4Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark
5Institute of Earth Science, University of Iceland, Askja, IS-101-Reykjavík, Iceland
6Second Institute of Oceanography, State Oceanic Administration, 310012 Hangzhou, People’s Republic of China