Middle eocene seawater pH and atmospheric carbon dioxide concentrations

Pearson, Paul Nicholas ORCID: https://orcid.org/0000-0003-4628-9818 and Palmer, Martin R. 1999. Middle eocene seawater pH and atmospheric carbon dioxide concentrations. Science 284 (5421) , pp. 1824-1826. 10.1126/science.284.5421.1824

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Abstract

The carbon dioxide content of the atmosphere [measured as the partial pressure of CO2 (pCO2)] affects the content of the surface ocean, which in turn affects seawater pH. The boron isotope composition (δ11B) of contemporaneous planktonic foraminifera that calcified their tests at different water depths can be used to reconstruct the pH-depth profile of ancient seawater. Construction of a pH profile for the middle Eocene tropical Pacific Ocean shows that atmospheric pCO2 was probably similar to modern concentrations or slightly higher.

Item Type:	Article
Status:	Published
Schools:	Earth and Environmental Sciences
Subjects:	G Geography. Anthropology. Recreation > GC Oceanography
Publisher:	American Association for the Advancement of Science
ISSN:	1095-9203
Last Modified:	18 Oct 2022 13:45
URI:	https://orca.cardiff.ac.uk/id/eprint/15257

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