Climate Change by the Numbers

John R. Christy is professor of atmospheric science, and director of the Earth System Science Center at the University of Alabama in Huntsville. His chief interests are global climate change, satellite sensing of global climate, and paleoclimate. He is best known, jointly with Roy Spencer, for his version of the satellite temperature record.

Christy was a lead author for the 2001 report by the IPCC.

While he supports the AGU declaration and is convinced that human activities are one cause of the global warming that has been measured, Christy is a strong critic of scientists who make catastrophic predictions of huge increases in global temperatures and tremendous rises in sea levels.

In this lecture entitled “Climate Change By the Numbers” Christy explains what the numbers say about climate change.