Deep-water circulation changes lead North Atlantic climate during deglaciation

被引：0

作者：

Francesco Muschitiello

William J. D’Andrea

Andreas Schmittner

Timothy J. Heaton

Nicholas L. Balascio

Nicole deRoberts

Marc W. Caffee

Thomas E. Woodruff

Kees C. Welten

Luke C. Skinner

Margit H. Simon

Trond M. Dokken

机构：

[1] University of Cambridge,Department of Geography

[2] Columbia University,Lamont

[3] NORCE Norwegian Research Centre and Bjerknes Centre for Climate Research,Doherty Earth Observatory

[4] Oregon State University,College of Earth, Ocean, and Atmospheric Sciences

[5] University of Sheffield,School of Mathematics and Statistics

[6] College of William and Mary,Department of Geology

[7] Purdue University,Department of Physics and Astronomy

[8] Purdue University,Department of Earth, Atmospheric, and Planetary Sciences

[9] University of California,Space Sciences Laboratory

[10] University of Cambridge,Godwin Laboratory for Palaeoclimate Research, Department of Earth Sciences

来源：

Nature Communications | / 10卷

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摘要：

Constraining the response time of the climate system to changes in North Atlantic Deep Water (NADW) formation is fundamental to improving climate and Atlantic Meridional Overturning Circulation predictability. Here we report a new synchronization of terrestrial, marine, and ice-core records, which allows the first quantitative determination of the response time of North Atlantic climate to changes in high-latitude NADW formation rate during the last deglaciation. Using a continuous record of deep water ventilation from the Nordic Seas, we identify a ∼400-year lead of changes in high-latitude NADW formation ahead of abrupt climate changes recorded in Greenland ice cores at the onset and end of the Younger Dryas stadial, which likely occurred in response to gradual changes in temperature- and wind-driven freshwater transport. We suggest that variations in Nordic Seas deep-water circulation are precursors to abrupt climate changes and that future model studies should address this phasing.

引用

共 240 条

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