Direct north-south synchronization of abrupt climate change record in ice cores using Beryllium 10

被引：59

作者：

Raisbeck, G. M.

Yiou, F.

Jouzel, J.

Stocker, T. F.

机构：

[1] Univ Paris Sud, CNRS, Ctr Spectrometrie Nucl & Spectrometrie Masse, IN2P3, F-91405 Orsay, France

[2] CE Saclay, UMR CEA CNRS UVSQ, IPSL LSCE, F-91191 Gif Sur Yvette, France

[3] Univ Bern, Inst Phys, CH-3012 Bern, Switzerland

来源：

CLIMATE OF THE PAST | 2007年 / 3卷 / 03期

关键词：

D O I：

10.5194/cp-3-541-2007

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A new, decadally resolved record of the Be-10 peak at 41 kyr from the EPICA Dome C ice core (Antarctica) is used to match it with the same peak in the GRIP ice core (Greenland). This permits a direct synchronisation of the climatic variations around this time period, independent of uncertainties related to the ice age-gas age difference in ice cores. Dansgaard-Oeschger event 10 is in the period of best synchronisation and is found to be coeval with an Antarctic temperature maximum. Simulations using a thermal bipolar seesaw model agree reasonably well with the observed relative climate chronology in these two cores. They also reproduce three Antarctic warming events observed between A1 and A2.

引用

页码：541 / 547

页数：7

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