Toward a Cenozoic history of atmospheric CO2

The CenCO2PIP Consortium

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The geological record encodes the relationship between climate and atmospheric carbon dioxide (CO2) over long and short timescales, as well as potential drivers of evolutionary transitions. However, reconstructing CO2 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 CO2 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 CO2 thresholds in biological and cryosphere evolution.

Original languageEnglish
Article numbereadi5177
JournalScience
Volume382
Issue number6675
DOIs
StatePublished - 1 Dec 2023

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