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SUMMARY:High latitude temperature evolution across the Last Interglacial -
  Dr Emilie Capron\, British Antarctic Survey
DTSTART:20140624T091500Z
DTEND:20140624T100000Z
UID:TALK52589@talks.cam.ac.uk
CONTACT:Dr. Ailsa Benton
DESCRIPTION:The Last Interglacial (LIG\, 129-116 thousand of years\, ka) r
 epresents an interesting test bed for climate model feedbacks for warmer-t
 han-present high latitudes. However\, mainly because synchronising differe
 nt paleoclimatic archives from different parts of the word is not trivial\
 , a global picture of LIG temperature changes is difficult to obtain.\nIn 
 this work\, we have selected 49 polar ice core and sub-polar marine sedime
 nt records and developed a strategy to synchronise them onto the recent AI
 CC2012 ice core chronology. This new synthesis enables us to describe the 
 spatial and temporal climatic patterns over polar ice sheets (surface air 
 temperature) and around the ice margins (sea surface temperatures) at a pl
 uri-centennial to millennial-scale. Major features highlighted are (i) non
  synchronous maximum temperature change between the two hemispheres with t
 he Southern Ocean and Antarctica records showing an early warming compared
  to North Atlantic records and (ii) Southern hemisphere records exhibiting
  warm conditions for a longer time period compared to records from the Nor
 thern Hemisphere and smaller temperature amplitude changes.\nOur compiled 
 records are compared with recent snapshot model experiments performed with
  two state of the art General Circulation Models (HADCM3\, CCSM3). Such an
  exercise enables us to investigate the climate feedbacks which causes the
  most apparent model-data differences.
LOCATION:room 330B\, British Antarctic Survey\, High Cross\, Cambridge\, C
 B3 0ET
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