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Inaugural Lecture - Chronis Tzedakis

UCL Inaugural Lectures

Tuesday, 15 November 2011 from 18:30 to 20:00 (GMT)

London, United Kingdom

Inaugural Lecture - Chronis Tzedakis

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Professor Chronis Tzediakis (Department of Geography)

Chronis Tzedakis was a Research Associate in Plant Sciences, Cambridge, a NERC Advanced Fellow in Geography and a Fellow of Robinson College, Cambridge, a Senior Lecturer and Professor of Global Change Palaeoecology in the School of Geography, University of Leeds.  He joined UCL as Professor of Physical Geography in 2009.  His research centres on understanding the response of vegetation to variations in climatic forcing on orbital and millennial/centennial timescales.  Since 2008, he has been leading an international collaborative network on ‘Past Interglacials’ (PIGS).

 

The natural length of the current interglacial

Although no glacial inception is projected to occur at current anthropogenically-driven CO2 concentrations of 390 ppmv, considerable uncertainty remains over the natural length of the present interglacial in the absence of human interference. This arises from the unusually subdued present summer solar radiation minimum.  Low CO2 concentrations can also promote glaciation, but modelling experiments indicate that pre-industrial CO2 levels of 280 ppmv were not sufficiently low to lead to new ice growth.  Examination of an interglacial period ~780 thousand years ago, characterized by similar radiative signature to present, suggests that the current interglacial would be nearing its end, provided that CO2 concentrations were 250-240ppmv.

 

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When & Where


Wilkins Gustave Tuck Lecture Theatre
UCL
Gower Street <br />
WC1E 6BT London
United Kingdom

Tuesday, 15 November 2011 from 18:30 to 20:00 (GMT)


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