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Ad Hoc Committee on Global Climate Issues: Annual Report

¹ Kansas Geological Survey, 1930 Constant Avenue, Lawrence, Kansas 66047-3724; lgerhard{at}kgs.ukans.edu
² Independent, P.O. Drawer 1269, Midland, Texas 79702-1269

Dr. Lee C. Gerhard is currently principal geologyist of the Kansas Geological Survey. His career has included petroleum exploration, reservoir geology, and research management. His research has been dominated by carbonate studies, petroleum occurence, and environment and resources public policy. Prior to returning to Kansas, he was Getty Professor of Geological Engineering at the Colorado School of Mines and operated an independent petroleum exploration company. Lee is an Honory Member of the AAPG.

The AAPG Ad Hoc Committee on Global Climate Issues has studied the supposition of human-induced climate change since the committee's inception in January 1998. This paper details the progress and findings of the committee through June 1999. At that time there had been essentially no geologic input into the global climate change debate. The following statements reflect the current state of climate knowledge from the geologic perspective as interpreted by the majority of the committee membership. The committee recognizes that new data could change its conclusions. The earth's climate is constantly changing owing to natural variability in earth processes. Natural climate variability over recent geological time is greater than reasonable estimates of potential human-induced greenhouse gas changes. Because no tool is available to test the supposition of human-induced climate change and the range of natural variability is so great, there is no discernible human influence on global climate at this time.

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