Toward a Cenozoic history of atmospheric CO <sub>2</sub>

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書誌事項

公開日
2023-12-08
資源種別
journal article
DOI
  • 10.1126/science.adi5177
  • 10.15496/publikation-99909
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p> The geological record encodes the relationship between climate and atmospheric carbon dioxide (CO <jats:sub>2</jats:sub> ) over long and short timescales, as well as potential drivers of evolutionary transitions. However, reconstructing CO <jats:sub>2</jats:sub> beyond direct measurements requires the use of paleoproxies and herein lies the challenge, as proxies differ in their assumptions, degree of understanding, and even reconstructed values. In this study, we critically evaluated, categorized, and integrated available proxies to create a high-fidelity and transparently constructed atmospheric CO <jats:sub>2</jats:sub> record spanning the past 66 million years. This newly constructed record provides clearer evidence for higher Earth system sensitivity in the past and for the role of CO <jats:sub>2</jats:sub> thresholds in biological and cryosphere evolution. </jats:p>

収録刊行物

  • Science

    Science 382 (6675), 2023-12-08

    American Association for the Advancement of Science (AAAS)

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