Climate of the Past
Climate of the Past
CP
Articles | Volume 22, issue 5
Articles | Volume 22, issue 5
https://doi.org/10.5194/cp-22-1003-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-22-1003-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 5
Research article
 | 
13 May 2026
Research article |  | 13 May 2026

Spatially contrasted response of Devonian anoxia to astronomical forcing

Justin Gérard, Alexandre Pohl, Loïc Sablon, Jarno Huygh, Anne-Christine Da Silva, and Michel Crucifix

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Short summary
We studied how changes in Earth’s orbit affected ocean oxygen during the Devonian, a time of repeated environmental crises and extinctions. Using computer simulations, we show that certain orbital cycles, especially eccentricity maxima, exacerbate oxygen loss in the oceans, while obliquity also played a key role at high latitudes. The results also help explain why records from different places show contrasting signals and provide new insight into how natural climate cycles can affect ocean life.
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