Synchronous Change of Atmospheric CO₂ and Antarctic Temperature During the Last Deglacial Warming

Parrenin, F.; Masson-Delmotte, V.; Koehler, P.; Raynaud, D.; Paillard, D.; Schwander, Jakob; Barbante, C.; Landais, A.; Wegner, A.; Jouzel, J. (2013). Synchronous Change of Atmospheric CO₂ and Antarctic Temperature During the Last Deglacial Warming. Science, 339(6123), pp. 1060-1063. American Association for the Advancement of Science 10.1126/science.1226368

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Understanding the role of atmospheric CO2 during past climate changes requires clear knowledge of how it varies in time relative to temperature. Antarctic ice cores preserve highly resolved records of atmospheric CO2 and Antarctic temperature for the past 800,000 years. Here we propose a revised relative age scale for the concentration of atmospheric CO2 and Antarctic temperature for the last deglacial warming, using data from five Antarctic ice cores. We infer the phasing between CO2 concentration and Antarctic temperature at four times when their trends change abruptly. We find no significant asynchrony between them, indicating that Antarctic temperature did not begin to rise hundreds of years before the concentration of atmospheric CO2, as has been suggested by earlier studies.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Climate and Environmental Physics

UniBE Contributor:

Schwander, Jakob

Subjects:

500 Science > 530 Physics

ISSN:

0036-8075

Publisher:

American Association for the Advancement of Science

Language:

English

Submitter:

Doris Rätz

Date Deposited:

29 Sep 2014 11:12

Last Modified:

10 Sep 2015 10:22

Publisher DOI:

10.1126/science.1226368

Web of Science ID:

000315452000037

BORIS DOI:

10.7892/boris.47739

URI:

https://boris.unibe.ch/id/eprint/47739

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