Climate of the Past
Climate of the Past
CP
Articles | Volume 19, issue 7
Articles | Volume 19, issue 7
https://doi.org/10.5194/cp-19-1559-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-19-1559-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 7
Research article
 | 
28 Jul 2023
Research article |  | 28 Jul 2023

Impact of iron fertilisation on atmospheric CO2 during the last glaciation

Himadri Saini, Katrin J. Meissner, Laurie Menviel, and Karin Kvale

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Latest update: 25 Oct 2025
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Short summary
Understanding the changes in atmospheric CO2 during the last glacial cycle is crucial to comprehend the impact of climate change in the future. Previous research has hypothesised a key role of greater aeolian iron input into the Southern Ocean in influencing the global atmospheric CO2 levels by impacting the changes in the marine phytoplankton response. In our study, we test this iron hypothesis using climate modelling and constrain the impact of ocean iron supply on global CO2 decrease.
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