Vermassen, F.; O'Regan, M.; de Boer, A.; Schenk, F.; Razmjooei, M.; West, G.; Cronin, T.M.; Jakobsson, M.; Coxall, H.K. (2023). A seasonally ice-free Arctic Ocean during the Last Interglacial. Nature Geoscience 16(8): 723-729. https://dx.doi.org/10.1038/s41561-023-01227-x, more
Analysis of the microfossil content of sediment cores from areas where thick Arctic sea ice persists today reveals that a subpolar species associated with Atlantic water expanded deep into the Arctic Ocean during the Last Interglacial. This finding implies that summers in the Arctic were likely sea-ice-free during this period.
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