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Marine radiocarbon evidence for the mechanism of deglacial atmospheric CO2 rise
Marchitto, T.M.; Lehman, S.J.; Ortiz, J.D.; Flückiger, J.; van Geen, A. (2007). Marine radiocarbon evidence for the mechanism of deglacial atmospheric CO2 rise. Science (Wash.) 316(5826): 10.1126/science.1138679
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075, more
Peer reviewed article  

Also published as
  • Marchitto, T.M.; Lehman, S.J.; Ortiz, J.D.; Flückiger, J.; van Geen, A. (2007). Marine radiocarbon evidence for the mechanism of deglacial atmospheric CO2 rise. Science (Wash.) 316(5830): 1456-1459, more

Available in Authors 

Keywords
    Carbon dioxide; Deglaciation; Marine

Authors  Top 
  • Marchitto, T.M.
  • Lehman, S.J.
  • Ortiz, J.D.
  • Flückiger, J.
  • van Geen, A.

Abstract
    We reconstructed the radiocarbon activity of intermediate waters in the eastern North Pacific over the past 38,000 years. Radiocarbon activity paralleled that of the atmosphere, except during deglaciation, when intermediate-water values fell by more than 300 per mil. Such a large decrease requires a deglacial injection of very old waters from a deep-ocean carbon reservoir that was previously well isolated from the atmosphere. The timing of intermediate-water radiocarbon depletion closely matches that of atmospheric carbon dioxide rise and effectively traces the redistribution of carbon from the deep ocean to the atmosphere during deglaciation.

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