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SUMMARY:The role of plate tectonics in controlling paleo climate and ocean
  circulation - Prof. Dan Lunt\, University of Bristol
DTSTART:20151016T130000Z
DTEND:20151016T140000Z
UID:TALK59972@talks.cam.ac.uk
CONTACT:Dr Dave Munday
DESCRIPTION:Although the current paradigm is that CO2 is the primary drive
 r of large-scale Earth System change over the last 150 million years\, the
  relative importance of changing palaeogeography on climate dynamics throu
 gh  this greenhouse period is yet to be fully explored. In particular\, th
 e opening and closing of key ocean gateways\, \norogenesis\, and continent
 ality\, could have a key role in determining not only the timing of key tr
 ansitions (e.g.  Eocene-Oligocene glaciation)\, but could also contribute 
 directly to the large-scale trends.\n\nHere\, we present a new series of c
 limate model simulations\, built upon state-of-the-art palaeogeographic ma
 ps  (~20 in total covering a ~100 million year period). The suite of simul
 ations allows us to consider key  questions related to climate dynamics th
 rough this time period: \n\n(1) What is the role of changing palaeogeograp
 hy  (including gateways) in mediating ocean circulation\, through changing
  gateways and continental configuration? \n\n(2) What is the contribution 
 of changing palaeogeography to climate\, and climate sensitivity? \n\nThro
 ugh considering the relationship between the local and regional scale\, we
  explore the dangers of drawing global conclusions from local data\, and h
 ighlight key areas where new palaeodata could be targeted to inform the ab
 ove questions and better evaluate the models.
LOCATION:British Antarctic Survey\, Room 307
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