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Science 12 March 1999:
Vol. 283. no. 5408, pp. 1712 - 1714
DOI: 10.1126/science.283.5408.1712
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Reports

Ice Core Records of Atmospheric CO2 Around the Last Three Glacial Terminations

Hubertus Fischer, Martin Wahlen, Jesse Smith, Derek Mastroianni, Bruce Deck

Air trapped in bubbles in polar ice cores constitutes an archive for the reconstruction of the global carbon cycle and the relation between greenhouse gases and climate in the past. High-resolution records from Antarctic ice cores show that carbon dioxide concentrations increased by 80 to 100 parts per million by volume 600 ± 400 years after the warming of the last three deglaciations. Despite strongly decreasing temperatures, high carbon dioxide concentrations can be sustained for thousands of years during glaciations; the size of this phase lag is probably connected to the duration of the preceding warm period, which controls the change in land ice coverage and the buildup of the terrestrial biosphere.

Scripps Institution of Oceanography, Geosciences Research Division, University of California San Diego, La Jolla, CA 92093-0220, USA.

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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Are observed changes in the concentration of carbon dioxide in the atmosphere really dangerous?.
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Atmospheric CO2 Concentrations over the Last Glacial Termination.
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Ad Hoc Committee on Global Climate Issues: Annual Report.
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Early Holocene Atmospheric CO2 Concentrations.
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Century-Scale Shifts in Early Holocene Atmospheric CO2 Concentration.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)