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800,000 years of abrupt climate variability

Barker, Stephen, Knorr, Gregor, Edwards, R. Lawrence, Parrenin, Frédéric, Putnam, Aaron. E., Skinner, Luke C., Wolff, Eric and Ziegler, Martin 2011. 800,000 years of abrupt climate variability. Science 334 (6054) , pp. 347-351. 10.1126/science.1203580

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Abstract

We construct an 800-kyr synthetic record of Greenland climate variability based on the thermal bipolar seesaw model. Our Greenland analog reproduces much of the variability seen in the Greenland ice cores over the last 100 kyr. We also find a strong similarity with the absolutely dated speleothem record from China, allowing us to place ice-core records within an absolute time frame for the last 400 kyr. The synthetic record provides both a stratigraphic reference and a conceptual basis for assessing the long-term evolution of millennial-scale variability and its potential role in longer-time-scale climate change. Indeed, we provide evidence for a ubiquitous association between bipolar seesaw oscillations and glacial terminations throughout the Middle to Late Pleistocene.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Earth and Ocean Sciences
Subjects: Q Science > QE Geology
Additional Information: Report published in Science
Publisher: American Association for the Advancement of Science
ISSN: 0036-8075
Funders: PLP, NERC
Last Modified: 04 Jun 2017 02:08
URI: http://orca-mwe.cf.ac.uk/id/eprint/9667

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