Siple Dome ice reveals two modes of millennial CO2 change during the last ice age

被引：148

作者：

Ahn, Jinho ^{[1
]}

Brook, Edward J. ^{[2
]}

机构：

[1] Seoul Natl Univ, Sch Earth & Environm Sci, Seoul 151742, South Korea

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

来源：

NATURE COMMUNICATIONS | 2014年 / 5卷

基金：

新加坡国家研究基金会; 美国国家科学基金会;

关键词：

SCALE CLIMATE-CHANGE; ATMOSPHERIC CO2; ANTARCTIC TEMPERATURE; SOUTHERN-OCEAN; ATLANTIC; CORE; GREENLAND; CIRCULATION; COLLAPSE; MARINE;

D O I：

10.1038/ncomms4723

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：

Reconstruction of atmospheric CO2 during times of past abrupt climate change may help us better understand climate-carbon cycle feedbacks. Previous ice core studies reveal simultaneous increases in atmospheric CO2 and Antarctic temperature during times when Greenland and the northern hemisphere experienced very long, cold stadial conditions during the last ice age. Whether this relationship extends to all of the numerous stadial events in the Greenland ice core record has not been clear. Here we present a high-resolution record of atmospheric CO2 from the Siple Dome ice core, Antarctica for part of the last ice age. We find that CO2 does not significantly change during the short Greenlandic stadial events, implying that the climate system perturbation that produced the short stadials was not strong enough to substantially alter the carbon cycle.

引用

页数：6

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