Glaciological Evidence of Abrupt Tropical Climate Change: Past, Present, and Future Dr. Lonnie G. Thompson, Dist. Professor, The Ohio State University Friday, May 18, 2007 $5

Over the last 30 years ice core records have been systematically recovered from 10 high-elevation ice fields. The records provide compelling evidence that the present warming and associated glacier retreat are unprecedentedin some areas for at least 5200 years. The ongoing global scape, rapid retreat of mountain glaciers is not only contributing to global sea level rise, but threatening fresh water supplies in many of the world’s most populous regions. Dr. Lonnie Thompson is Distinguished Professor in the Geology Department of The Ohio State University, and the Senior Research Scientist of the Byrd Polar Research Center.

Lecture Slides (in PDF format, requries Acrobat Reader)

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