Abstract

What do we know about Last Interglacial sea level?

Highlights

  • The Last Interglacial (LIG, Marine Isotope Stage 5e) represents the most recent time period when the polar ice sheets retreated significantly from their present extent, and has frequently been cited as a useful, though imperfect, analogue to understand future ice-sheet and sea-level response to a warming climate

  • While there are important differences between modern, anthropogenically-driven global warming and the orbitally driven warmth of the LIG, there are several relevant and valuable observations to be made. Among these are (1) understanding the sensitivities of the ice sheets in Greenland and Antarctic to warming; (2) identifying the mechanisms contributing to the millennial-scale evolution of climate and sea level during the interglacial; and (3) mapping out the sea-level budget, including the sources, magnitudes, and timing of meltwater contributions

  • One of the most critical questions to answer is whether there was a significant contribution from the Antarctic ice sheet to LIG sea level, which is still uncertain

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Summary

Introduction

The Last Interglacial (LIG, Marine Isotope Stage 5e) represents the most recent time period when the polar ice sheets retreated significantly from their present extent, and has frequently been cited as a useful, though imperfect, analogue to understand future ice-sheet and sea-level response to a warming climate. Among these are (1) understanding the sensitivities of the ice sheets in Greenland and Antarctic to warming; (2) identifying the mechanisms contributing to the millennial-scale evolution of climate and sea level during the interglacial; and (3) mapping out the sea-level budget, including the sources, magnitudes, and timing of meltwater contributions.

Results
Conclusion
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