University of Cambridge > Talks.cam > British Antarctic Survey - Ice Dynamics and Paleoclimate Seminar Series > The contribution of melt ponds to enhanced Arctic sea-ice melt during the Last Interglacial

The contribution of melt ponds to enhanced Arctic sea-ice melt during the Last Interglacial

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The Hadley Centre Global Environment Model version 3 (HadGEM3) is the first coupled climate model to simulate an ice-free Arctic during the Last Interglacial (LIG), 127 000 years ago, and appears to yield accurate Arctic surface temperatures during the summer season. Here, we investigate the causes and impacts of this extreme simulated ice loss. We find that the summer ice melt was predominantly driven by thermodynamic processes, and significantly impacted by melt pond formation. Our results suggest that models with more detailed melt pond schemes can simulate very different sea ice behaviour under forcings other than the present day. This is of concern for future projections of sea-ice loss.

This talk is part of the British Antarctic Survey - Ice Dynamics and Paleoclimate Seminar Series series.

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