The impact of climate variability on ice sheet dynamics in an East Antarctic basin

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• Felicity McCormack, Monash University
• Tuesday 12 July 2022, 14:00-15:00
• https://ukri.zoom.us/j/94254273724;BAS seminar room 2.

If you have a question about this talk, please contact Dr Michael Haigh.

How climate variability will impact ice mass loss is a key source of uncertainty in estimates of Antarctica’s future contribution to sea level rise, particularly in regions of East Antarctica where there is a paucity of long-term climate records. Here, we use an ice sheet model to investigate the impact of ocean variability of varying amplitudes on ice discharge from Totten Glacier. We find that ocean variability has a lesser impact on discharge when the background ocean temperatures are close to present-day observations. For warmer background ocean temperatures, ocean variability can alternately delay or accelerate grounding line retreat. Our results show that the amplitude of ocean variability is not a clear predictor of the ice sheet response, highlighting the need for long-term ocean state measurements.

This talk is part of the British Antarctic Survey - Polar Oceans seminar series series.

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