Sea ice is an integral component of the climate system, but a difficult one to reconstruct. Biochemical tracers preserved in marine sediments now reveal the waxing and waning of sea ice since the Last Glacial Maximum in an Arctic Ocean gateway.
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Nørgaard-Pedersen, N. Tracking ancient sea ice. Nature Geosci 2, 743–744 (2009). https://doi.org/10.1038/ngeo676
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DOI: https://doi.org/10.1038/ngeo676
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