Articles | Volume 16, issue 5
Clim. Past, 16, 1691–1713, 2020
Clim. Past, 16, 1691–1713, 2020
Research article
02 Sep 2020
Research article | 02 Sep 2020

An 83 000-year-old ice core from Roosevelt Island, Ross Sea, Antarctica

James E. Lee et al.

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Short summary
The Roosevelt Island ice core was drilled to investigate climate from the eastern Ross Sea, West Antarctica. We describe the ice age-scale and gas age-scale of the ice core for 0–763 m (83 000 years BP). Old ice near the bottom of the core implies the ice dome existed throughout the last glacial period and that ice streaming was active in the region. Variations in methane, similar to those used as evidence of early human influence on climate, were observed prior to significant human populations.