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SUMMARY:The orbital pacing of Palaeogene hyperthermals - can we believe mo
 del results? - Dan Lunt\, University of Bristol
DTSTART:20120228T163000Z
DTEND:20120228T173000Z
UID:TALK34293@talks.cam.ac.uk
CONTACT:John Maclennan
DESCRIPTION:A series of transient global warming events occurred during th
 e late Paleocene and Early Eocene (~59-50 Ma ago)\, of varying magnitude b
 ut apparently paced by orbital cycles.  Here we present a hierarchy of cli
 mate models of varying complexity\, that (1) provide a link between orbita
 l variations and warming due to the destabilisation of hydrates stored in 
 marine sediments through changes in global ocean circulation\, and (2) acc
 ount for the decreasing magnitude and increasing frequency of the hyperthe
 rmal events through the Early Eocene.  However\, how robust are these mode
 l results\, and really how well do they agree with the palaeo record?\n\nR
 eferences:\nLunt\, D.J.\, Ridgwell\, A.\, Sluijs\, A.\, Zachos\, J.\, Hunt
 er\, S. Haywood\, A. (2011). A model for orbital pacing of methane hydrate
  destabilization during the Palaeogene\, Nature Geoscience\, 4\, 775-778. 
 [doi:10.1038/ngeo1266].\n\nLunt\, D.J.\, Valdes\, P.J. Valdes\, Dunkley Jo
 nes\, T\, Ridgwell\, A.\, Haywood\, A.M.\, Schmidt\, D.N.\, Marsh\, R.\, M
 aslin\, M. (2010). CO2-driven ocean circulation changes as an amplifier of
  Paleocene-Eocene thermal maximum hydrate destabilization. Geology\, 38\, 
 875-878. [doi:10.1130/G31184.1].\n
LOCATION:Harker 1 seminar room\, Department of Earth Sciences
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