Interhemispheric Atlantic seesaw response during the last deglaciation

被引：430

作者：

Barker, Stephen ^{[1
]}

Diz, Paula ^{[1
]}

Vautravers, Maryline J. ^{[2
]}

Pike, Jennifer ^{[1
]}

Knorr, Gregor ^{[1
]}

Hall, Ian R. ^{[1
]}

Broecker, Wallace S. ^{[3
]}

机构：

[1] Cardiff Univ, Sch Earth & Ocean Sci, Cardiff CF10 3YE, S Glam, Wales

[2] British Antarctic Survey, Cambridge CB3 0ET, England

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

来源：

NATURE | 2009年 / 457卷 / 7233期

基金：

美国国家科学基金会;

关键词：

SEA-SURFACE TEMPERATURE; PLANKTONIC-FORAMINIFERA; AGE CALIBRATION; BIPOLAR SEESAW; SOUTH ATLANTIC; OCEAN; CIRCULATION; GREENLAND; EVENTS; RESUMPTION;

D O I：

10.1038/nature07770

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：

070301 [无机化学]; 070403 [天体物理学]; 070507 [自然资源与国土空间规划学]; 090105 [作物生产系统与生态工程];

摘要：

The asynchronous relationship between millennial-scale temperature changes over Greenland and Antarctica during the last glacial period has led to the notion of a bipolar seesaw which acts to redistribute heat depending on the state of meridional overturning circulation within the Atlantic Ocean. Here we present new records from the South Atlantic that show rapid changes during the last deglaciation that were instantaneous (within dating uncertainty) and of opposite sign to those observed in the North Atlantic. Our results demonstrate a direct link between the abrupt changes associated with variations in the Atlantic meridional overturning circulation and the more gradual adjustments characteristic of the Southern Ocean. These results emphasize the importance of the Southern Ocean for the development and transmission of millennial-scale climate variability and highlight its role in deglacial climate change and the associated rise in atmospheric carbon dioxide.

引用

页码：1097 / U50

页数：7

共 58 条

[1]

Atmospheric CO2 and climate from 65 to 30 ka BP [J].