Atmospheric carbon dioxide, methane, deuterium, and calculated Antarctic temperature of EPICA Dome C ice core

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 rel...

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Bibliographic Details
Main Authors: Parrenin, Frédéric, Masson-Delmotte, Valerie, Köhler, Peter, Raynaud, Dominique, Paillard, Didier, Schwander, Jakob, Barbante, Carlo, Landais, Amaelle, Wegner, Anna, Jouzel, Jean
Format: Dataset
Language:English
Published: PANGAEA 2013
Subjects:
EPICA
European Project for Ice Coring in Antarctica
Antarctic
Antarc*
Antarctica
ice core
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.810199
https://doi.org/10.1594/PANGAEA.810199
Description
Summary: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.

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