Earth System Dynamics
Earth System Dynamics
ESD
Articles | Volume 16, issue 6
Articles | Volume 16, issue 6
https://doi.org/10.5194/esd-16-2035-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esd-16-2035-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 6
Research article
 | 
19 Nov 2025
Research article |  | 19 Nov 2025

Inconclusive early warning signals for Dansgaard-Oeschger events across Greenland ice cores

Clara Hummel, Niklas Boers, and Martin Rypdal

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Short summary
We revisit early warning signals (EWS) for past abrupt climate changes known as Dansgaard-Oeschger (DO) events. Using advanced statistical methods, we find fewer significant EWS than previously reported. While some signals appear consistent across Greenland ice core records, they are not enough to identify the still unknown mechanisms behind DO events. This study highlights the complexity of predicting climate changes and urges caution in interpreting (paleo-)climate data.
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