Climate of the Past
Climate of the Past
CP
Articles | Volume 22, issue 7
Articles | Volume 22, issue 7
https://doi.org/10.5194/cp-22-1241-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-22-1241-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 7
Research article
 | 
02 Jul 2026
Research article |  | 02 Jul 2026

South Atlantic lipid biomarkers support synchronous Plio-Pleistocene global cooling: revising the ODP Site 1090 sea surface temperature record

Brianna Hoegler, Timothy D. Herbert, and Jamie Pahigian

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Short summary
Studying the Pliocene (5.33–2.58 Ma) is key to understanding Earth’s climate under current atmospheric CO2 levels and the development of permanent Northern Hemisphere ice. We used ocean sediments and improved laboratory methods to reconstruct sea surface temperatures from Ocean Drilling Program Site 1090 (south Atlantic) from ~4.3–2.6 Ma. Our data suggests cooling patterns similar to those found worldwide, suggesting a global forcing, like decreased CO2, triggered the shift to the ice ages.
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