Atmospheric CO2 Concentrations over
the Last Glacial Termination
Atmospheric CO2 concentrations over
the last glacial termination
Science, Volume 291, 112-114, 5 January 2001.
Eric Monnin, Andreas Indermühle, André Dällenbach,
Jacqueline Flückiger, Bernhard Stauffer, Thomas F. Stocker
Climate and Environmental Physics, Physics Institute,
University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
Dominique Raynaud and Jean-Marc Barnola
CNRS Laboratoire de Glaciologie et de Géophysique
de l'Environnement, Grenoble, France
A record of atmospheric CO2 concentration during the transition from the Last Glacial Maximum to the Holocene, obtained from the Dome Concordia (Antarctica) ice core, reveals that an increase of 76 parts per million by volume (ppmv) occurred over a period of 6 thousand years in four clearly distinguishable intervals. The close correlation between CO2 concentration and Antarctic temperature indicates that the Southern Ocean played an important role in causing the CO2 increase. However, the similarity of changes in CO2 concentration and variations of atmospheric methane concentration suggests that processes in the tropics and in the northern hemisphere, where the main sources for methane are located, also had significant effects on atmospheric CO2 concentrations.
Download the Dome C CO2 and CH4 data and data description from the WDC Paleo Archive.
To read or view the full study, please visit the
It was published in Science Volume 291, 112-114, 5 January 2001.
National Oceanic and Atmospheric Administration
11 Jan 2001