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SUMMARY:The North American deglaciation: linking rapid climate change\, ic
 e sheet retreat and sea level rises - Dr Lauren Gregoire (School of Earth 
 and Environment\, University of Leeds)
DTSTART:20141114T173000Z
DTEND:20141114T183000Z
UID:TALK55199@talks.cam.ac.uk
CONTACT:39223
DESCRIPTION:The last deglaciation (approx. 21-7ka) was punctuated by sever
 al abrupt climatic and sea level changes in which ice sheets are thought t
 o have played an important role.\nThis talk describes the role of the N. A
 merican ice sheet in two of the most important event of rapid sea level ch
 ange:\n(i) the MWP-1a\, a ~ 14-18 m global sea level rise in less than 350
  years which coincided with the rapid N. Hemisphere Bolling warming\;\n(ii
 ) the ‘8.2 kyr event’\, a century long cooling event attributed to the
  sudden release of N. American glacial lakes.\nBy combining\, climate\, ic
 e sheet and sea level modelling with a variety of palaeo-environment data 
 I evaluate (i) the mechanisms that lead to accelerated ice melt and (ii) t
 he impacts of these on the climate. I will present recent efforts to const
 rain the contribution of the N. American ice sheet to MWP1a from the Bolli
 ng warming and a mass balance mechanism named the saddle collapse. Finally
 \, I will introduce the recent plans of the Palaeo Model Intercomparison P
 roject for simulating the climate of the last deglaciation.
LOCATION:Latimer  Room\, Clare College
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