Deep-water circulation changes lead North Atlantic climate during deglaciation

被引：52

作者：

Muschitiello, Francesco ^{[1
,2
,3
,4
]}

D'Andrea, William J. ^{[2
]}

Schmittner, Andreas ^{[5
]}

Heaton, Timothy J. ^{[6
]}

Balascio, Nicholas L. ^{[7
]}

DeRoberts, Nicole ^{[2
]}

Caffee, Marc W. ^{[8
,9
]}

Woodruff, Thomas E. ^{[8
]}

Welten, Kees C. ^{[10
]}

Skinner, Luke C. ^{[11
]}

Simon, Margit H. ^{[3
,4
]}

Dokken, Trond M. ^{[3
,4
]}

机构：

[1] Univ Cambridge, Dept Geog, Cambridge CB2 3EN, England

[2] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA

[3] NORCE Norwegian Res Ctr, N-5007 Bergen, Norway

[4] Bjerknes Ctr Climate Res, N-5007 Bergen, Norway

[5] Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA

[6] Univ Sheffield, Sch Math & Stat, Sheffield S3 7RH, S Yorkshire, England

[7] Coll William & Mary, Dept Geol, Williamsburg, VA 23187 USA

[8] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA

[9] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA

[10] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[11] Univ Cambridge, Godwin Lab Palaeoclimate Res, Dept Earth Sci, Cambridge CB2 3EQ, England

来源：

NATURE COMMUNICATIONS | 2019年 / 10卷 / 1期

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

LAST GLACIAL TERMINATION; GLOBAL CARBON-CYCLE; GREENLAND ICE-CORE; YOUNGER DRYAS; SEA-ICE; OCEAN CIRCULATION; NORDIC SEAS; RADIOCARBON MEASUREMENTS; OVERTURNING CIRCULATION; MERIDIONAL CIRCULATION;

D O I：

10.1038/s41467-019-09237-3

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

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 similar to 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 temperatureand 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

页数：10

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