Articles | Volume 15, issue 2
Clim. Past, 15, 751–779, 2019
Clim. Past, 15, 751–779, 2019
Research article
10 Apr 2019
Research article | 10 Apr 2019

A 2700-year annual timescale and accumulation history for an ice core from Roosevelt Island, West Antarctica

Mai Winstrup et al.

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Short summary
We present a 2700-year timescale and snow accumulation history for an ice core from Roosevelt Island, Ross Ice Shelf, Antarctica. We observe a long-term slightly decreasing trend in accumulation during most of the period but a rapid decline since the mid-1960s. The latter is linked to a recent strengthening of the Amundsen Sea Low and the expansion of regional sea ice. The year 1965 CE may thus mark the onset of significant increases in sea-ice extent in the eastern Ross Sea.