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

Permanent Link:: http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15050367/00001

Material Information

Title:: Synchronous Change of Atmospheric CO2 and Antarctic Temperature During the Last Deglacial Warming
Series Title:: Science Magazine Volume 339
Creator:: F. Parrenin
V. Masson- Delmotte
P. Kohler
D. Raynaud
D. Paillard
J. Schwander
C. Barbante
A. Landais
A. Wegner
J. Jouzel
Affiliation:: Laboratoire de Glaciologie et Geophysique de l'Environnement
Laboratoire des Sciences du Climat et de l'Environnement
Alfred Wegener Institute for Polar and Marine Research
Laboratoire de Glaciologie et Geophysique de l'Environnement
Laboratoire des Sciences du Climat et de l'Environnement
University of Bern -- Physics Institute
University of Venice -- Department of Environmental Sciences
Laboratoire des Sciences du Climate et de l'Environnement
Alfred Wegener Institute for Polar and Marine Research
Laboratoire des Sciences du Climat et de l'Environnement
Publisher:: American Association for the Advancement of Science
Publication Date:: 2013-03-01
Language:: English

Subjects / Keywords:: climate change
carbon dioxide
ice cores
Antarctic regions

Abstract:: 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.

Source Institution:: Florida International University
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