Continuous sterane and phytane δ13C record reveals a substantial pCO2 decline since the mid-Miocene, suggesting climate sensitivity far higher than previous IPCC models

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Continuous sterane and phytane δ13C record reveals a substantial pCO2 decline since the mid-Miocene - Nature Communications

https://www.nature.com/articles/s41467-024-47676-9

Molecular fossils from marine phytoplankton reveal a substantial decline in CO2 values over the past 15 million years and may support higher climate sensitivity than previously reported.