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SUMMARY:Climate-ice sheet interactions in the long-term past and their imp
 ortance for the long-term future - Marie-Luise Kapsch (Max Planck Institut
 e for Meteorology)
DTSTART:20250212T173000Z
DTEND:20250212T190000Z
UID:TALK227167@talks.cam.ac.uk
CONTACT:123217
DESCRIPTION:The simulation of the last deglaciation (about 20.000 years be
 fore present to present) represents a hitherto unsolved challenge for comp
 rehensive state-of-the-art climate models. During my presentation\, I will
  introduce our novel coupled atmosphere-ocean-vegetation-ice sheet-solid e
 arth model that is used to simulate the transient climate. An ensemble of 
 transient model simulations successfully captures the main features of the
  last deglaciation\, as depicted by proxy estimates. In addition\, our mod
 el simulates a series of abrupt climate changes\, which can be attributed 
 to different drivers that will be discussed throughout the presentation. I
  will furthermore show\, how the model can be applied for simulations of t
 he long-term future. The future simulations show\, that parts of the Antar
 ctic ice sheet become unstable even under low-emission scenarios\, with si
 gnificant implications for the modelled climate response. Sensitivity expe
 riments additionally show that\, the Greenland ice sheet may exhibit multi
 ple steady-states under pre-industrial climate conditions. This has signif
 icant implications for a potential regrowth\, once disintegrated entirely.
  
LOCATION:Latimer Room\, Clare College
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