Atmospheric CO 2 Concentrations over the Last Glacial Termination-Reference-Cited by-同舟云学术

Atmospheric CO 2 Concentrations over the Last Glacial Termination

Published:2001-01-05 Issue:5501 Volume:291 Page:112-114
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Monnin Eric¹,Indermühle Andreas¹,Dällenbach André¹,Flückiger Jacqueline¹,Stauffer Bernhard¹,Stocker Thomas F.¹,Raynaud Dominique²,Barnola Jean-Marc²

Affiliation:

1. Climate and Environmental Physics, Physics Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.

2. CNRS Laboratoire de Glaciologie et de Géophysique de l'Environnement, BP 96, 38402 St. Martin d'Hères Cedex, Grenoble, France.

Abstract

A record of atmospheric carbon dioxide (CO 2 ) 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 occurred over a period of 6000 years in four clearly distinguishable intervals. The close correlation between CO 2 concentration and Antarctic temperature indicates that the Southern Ocean played an important role in causing the CO 2 increase. However, the similarity of changes in CO 2 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 substantial effects on atmospheric CO 2 concentrations.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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