Climate of the Past
Climate of the Past
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Articles | Volume 21, issue 11
Articles | Volume 21, issue 11
https://doi.org/10.5194/cp-21-1981-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-21-1981-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 11
Research article
 | 
05 Nov 2025
Research article |  | 05 Nov 2025

Estimating breakpoints in the Cenozoic Era: an econometric approach

Mikkel Bennedsen, Eric Hillebrand, Siem Jan Koopman, Kathrine By Larsen, and Rachel Lupien

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Latest update: 11 Jun 2026
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Short summary
This study presents a statistical approach for identifying transitions between climate states in the Cenozoic Era using a 67.1 million-year proxy record. Our results support transitions previously identified in the literature and provide statistical justification for additional ones. The approach enables construction of confidence intervals, offering measures of uncertainty. This adds to our understanding of the Cenozoic climate and provides a tool for analyzing other paleoclimate records.
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