The sources contributing to the deglacial rise in atmospheric CO2 concentrations are unclear. Climate model simulations suggest thawing permafrost soils were the initial source, highlighting the vulnerability of modern permafrost carbon stores.
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MacDougall, A. Catalyst for deglaciation. Nature Geosci 9, 648–649 (2016). https://doi.org/10.1038/ngeo2802
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DOI: https://doi.org/10.1038/ngeo2802
