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June 7, 2026Paleoceanography and PaleoclimatologyOpen Access

Evidence for Limited Atmospheric CO 2 Rise at the Miocene Climatic Optimum

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Authors

EWEvi WubbenJFJoost FrielingYBYannick F. Bats

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Overview

Randomized trial shows evidence of limited atmospheric CO2 rise during the Miocene Climatic Optimum, suggesting implications for climate understanding.

Key Points

  • This research aims to document atmospheric CO2 changes during the Miocene Climatic Optimum (MCO).
  • Analyzed algal 13C-fractionation records from Ocean Drilling Program Site 959 covering the Early to Middle Miocene.
  • Applied a new statistical model alongside traditional methods to estimate CO2 changes from 13C signals.
  • Indicated a CO2 rise of approximately 100–150 μatm during the onset of the MCO.
  • Demonstrated higher 13C-fractionation values in marine organic carbon and dinoflagellate cysts during the MCO.

Cite This Study

Wubben et al. (2026) studied this question.

synapsesocial.com/papers/6a250bca7def13d035e1bc94https://doi.org/10.1029/2025pa005388
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Also Consider

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