Atmospheric CO2 estimates for the Miocene to Pleistocene based on foraminiferal δ11B at Ocean Drilling Program Sites 806 and 807 in the Western Equatorial Pacific

Guillermic, Maxence; Misra, Sambuddha; Eagle, Robert; Tripati, Aradhna

doi:https://doi.org/10.5194/cp-18-183-2022

Articles | Volume 18, issue 2

https://doi.org/10.5194/cp-18-183-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/cp-18-183-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 2

Research article

|

02 Feb 2022

Research article |

| 02 Feb 2022

Atmospheric CO₂ estimates for the Miocene to Pleistocene based on foraminiferal δ¹¹B at Ocean Drilling Program Sites 806 and 807 in the Western Equatorial Pacific

Maxence Guillermic, Sambuddha Misra, Robert Eagle, and Aradhna Tripati

Supplement

https://doi.org/10.5194/cp-18-183-2022-supplement

Data sets

Paleoclimatology National Oceanic and Atmospheric Administration (NOAA) https://www.ncei.noaa.gov/products/paleoclimatology

Short summary

Here we reconstruct atmospheric CO₂ values across major climate transitions over the past 16 million years (Myr) from two sites in the West Pacific Warm Pool using a pH proxy on surface-dwelling foraminifera. We are able to reproduce pCO₂ data from ice cores; therefore we apply the same framework to older samples to create a long-term pH and pCO₂ reconstruction. We give quantitative constraints on pH and pCO₂ changes over the main climate transitions of the last 16 Myr.