Journal Highlights

Exploring the mismatch between modeled and observed Antarctic sea ice area

Editor’s Highlight—


This paper helps to show that ice shelf melting is important in the ability of climate models to simulate the positive Antarctic sea ice trends. The authors perform a series of modeling experiments to simulate the effect of freshwater input from Antarctic ice shelves on the modeled trend of sea-ice extent. They find that forcing the circum-Antarctic ocean with a linearly increasing rate of freshwater input can reverse the modeled negative trend in sea-ice extent, a scenario that current Earth System Models struggle to reproduce. They also find that accounting for the latent heat required to melt the ice shelves by the ocean leads to a more positive trend in the modeled sea-ice extent.


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