Climate Change over the Past Millennium
|Series:||Le Moyne Biology Department|
|Speaker:||Michael Mann, Penn State|
|Location:||Grewen Auditorium, Le Moyne|
|Date:||Fri, Feb 3, 2006|
Here's the announcement from Le Moyne's web site:
Climatologist Michael Mann, best known for his “hockey stick” graph – the famous chart showing that the earth’s temperature has sharply increased over the past 100 years or so, after centuries of gradual change will deliver two lectures at Le Moyne College on Friday, February 3.
The first, at 3:30 p.m., titled “Climate Over the Past Millennium,” will examine the data for climate change and how computer models are used to study climate. The second, at 7:30 p.m., “Global Climate Change: Past and Future,” will cover more general topics concerning climate change and touch on public policy issues. Both talks will be held in Grewen Auditorium and are free and open to the public.
The “hockey stick” temperature chart originates from two seminal research papers published in Nature in 1998 and Geophysical Research Letters in 1999 by Mann, along with Ray Bradley of the University of Massachusetts at Amherst and Malcolm Hughes of the University of Arizona. The chart is relatively flat from the period AD 1000 to 1900, indicating that temperatures were relatively stable for this period of time. But after 1900, temperatures appear to shoot up (forming the hockey stick’s blade), which led the researchers to conclude that man-made “greenhouse gas” emissions are the major cause of the global warming phenomenon. Their work passed two peer reviews at the United Nations’ International Panel on Climate Change (IPCC) and led to the birth and approval of the Kyoto protocol, although their findings have been hotly contested by some scientists since.
In 2002 Mann was named one of 50 leading visionaries in science and technology by Scientific American.
Mann is director of the Earth System Science Center at Penn State University. He is the author of 85 research papers on various aspects of climate change. Mann holds bachelor’s degrees in applied math and physics from the University of California-Berkeley, master of philosophy degrees from Yale in physics and geology & geophysics, a master of science degree in physics from Yale and a doctorate in geology & geophysics from Yale.
The lectures are sponsored by the biology department at Le Moyne. For more information, call 445-4310.