The two polar ice sheets of Greenland and Antarctica are losing ice, with both increasingly contributing to sea level rise. Greenland’s ice sheet may already be the largest single contributor to global sea level rise. At the other end of the planet, portions of Antarctica are becoming increasingly vulnerable to collapse. If temperatures overshoot 2°C, these regions will contribute to massive and potentially irreversible global sea level rise within the next several centuries. This event highlighted the differences and connections between these two polar ice sheets. Presenters included Dr. Jason Box, Geological Survey of Denmark and Greenland; Dr. Chris Stokes, Durham University; and Dr. Florence Colleoni, Italian National Institute of Oceanography and Applied Geophysics, co-chief officer of the new SCAR scientific research program INSTANT (Instabilities and Thresholds in Antarctica).
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