Abstract
On recovering Last Interglacial changes in the Antarctic ice sheet
Highlights
Quantifying the sensitivity of the Antarctic ice sheet (AIS) to increasing ocean tempera tures is central to improving projections of global sea-level rise
Isotopic analysis of marine sediments and the NEEM Greenland ice core indicate that Greenland likely provided a relatively small ~2 m contribution to maximum Last Interglacial (LIG) sea levels (NEEM Project Members 2013; Colville et al 2011), so the reconstructed LIG global mean sea level (GMSL) peak of +6 to 9 m implies that the AIS experienced very significant melt during the LIG (Dutton et al 2015)
The attractions of ice-core data Antarctic ice cores are an attractive proposi tion for reconstructing AIS changes: several ice cores from East Antarctica covering the LIG period have been placed on an im proved chronology using new gas and ice stratigraphic links (Bazin et al 2013)
Summary
Quantifying the sensitivity of the Antarctic ice sheet (AIS) to increasing ocean tempera tures is central to improving projections of global sea-level rise. Key patterns in ice-core δ18O can be generated by melt from the AIS via result ing influences on atmospheric circulation, sea surface temperatures, and sea-ice extent around Antarctica (Holloway et al 2017).
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