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Climate of the Past An interactive open-access journal of the European Geosciences Union
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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.
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CP | Articles | Volume 15, issue 2
CP | Articles | Volume 15, issue 2
Clim. Past, 15, 751–779, 2019
https://doi.org/10.5194/cp-15-751-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Clim. Past, 15, 751–779, 2019
https://doi.org/10.5194/cp-15-751-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
CP | Articles | Volume 15, issue 2

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.

Supplement

https://doi.org/10.5194/cp-15-751-2019-supplement

Data sets

Roosevelt Island Climate Evolution (RICE) ice core: The RICE17 chronology and accumulation record for the past 2700 years M. Winstrup https://doi.org/10.1594/PANGAEA.899147

The Roosevelt Island Ice Core Chronology 2017 (RICE17) M. Winstrup and J. E. Lee https://doi.org/10.1594/PANGAEA.899571

Water isotopes and total beta activity, Roosevelt Island firn cores (1974/75; 1976/77) H. Brink Clausen and M. Winstrup https://doi.org/10.1594/PANGAEA.899157

Roosevelt Island: Radar and GPS H. Conway https://doi.org/10.15784/601070

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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.
Read more
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Climate of the Past

An interactive open-access journal of the European Geosciences Union

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