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Evidence for decoupling of atmospheric CO2 and global climate during the Phanerozoic eon

Author

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  • Ján Veizer

    (Institut für Geologie, Mineralogie und Geophysik, Ruhr Universität
    Ottawa-Carleton Geoscience Centre, University of Ottawa)

  • Yves Godderis

    (Laboratoire de Physique Atmosphérique et Planétaire, Université de Liège)

  • Louis M. François

    (Laboratoire de Physique Atmosphérique et Planétaire, Université de Liège)

Abstract

Atmospheric carbon dioxide concentrations are believed to drive climate changes from glacial to interglacial modes1, although geological1,2,3 and astronomical4,5,6 mechanisms have been invoked as ultimate causes. Additionally, it is unclear7,8 whether the changes between cold and warm modes should be regarded as a global phenomenon, affecting tropical and high-latitude temperatures alike9,10,11,12,13, or if they are better described as an expansion and contraction of the latitudinal climate zones, keeping equatorial temperatures approximately constant14,15,16. Here we present a reconstruction of tropical sea surface temperatures throughout the Phanerozoic eon (the past ∼550 Myr) from our database17 of oxygen isotopes in calcite and aragonite shells. The data indicate large oscillations of tropical sea surface temperatures in phase with the cold–warm cycles, thus favouring the idea of climate variability as a global phenomenon. But our data conflict with a temperature reconstruction using an energy balance model that is forced by reconstructed atmospheric carbon dioxide concentrations18. The results can be reconciled if atmospheric carbon dioxide concentrations were not the principal driver of climate variability on geological timescales for at least one-third of the Phanerozoic eon, or if the reconstructed carbon dioxide concentrations are not reliable.

Suggested Citation

  • Ján Veizer & Yves Godderis & Louis M. François, 2000. "Evidence for decoupling of atmospheric CO2 and global climate during the Phanerozoic eon," Nature, Nature, vol. 408(6813), pages 698-701, December.
    • Handle: RePEc:nat:nature:v:408:y:2000:i:6813:d:10.1038_35047044
    DOI: 10.1038/35047044
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    Cited by:

    1. Mauro Francini & Lucia Chieffallo & Annunziata Palermo & Maria Francesca Viapiana, 2020. "A Method for the Definition of Local Vulnerability Domains to Climate Change and Relate Mapping. Two Case Studies in Southern Italy," Sustainability, MDPI, vol. 12(22), pages 1-26, November.
    2. Ryunosuke Kikuchi, 2008. "Reconsideration of Climate Change from the Viewpoints of Greenhouse Gas Types and Time Scale," Energy & Environment, , vol. 19(5), pages 691-705, September.
    3. Dan Pangburn, 2015. "Influence of Carbon Dioxide on Average Global Temperature during the Phanerozoic Eon," Energy & Environment, , vol. 26(5), pages 841-845, September.
    4. Harry N.A. Priem, 2013. "Climate Change and Carbon Dioxide: Geological Perspective," Energy & Environment, , vol. 24(3-4), pages 361-380, June.

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