Daily Archives: December 12, 2013

Dr. John Christy: “Climate science has a long way to go.”

“In this testimony, evidence is presented to demonstrate that recent weather events are not outside the extremes that have occurred in the past when human influences were negligible. Therefore in my view one cannot attribute these recent events with any confidence to something beyond nature. Climate models are promoted as tools that are able to discriminate natural climate events versus those that might happen as a result of the increases in greenhouse gases due to human activities and have been used by EPA for regulatory action. Unfortunately, as demonstrated here and discussed in the literature, climate models have not demonstrated acceptable skill in terms of depicting even very fundamental, large-scale climate variations, and thus are unable to identify natural versus human-influenced events on regional scales. Indeed, the lack of modeling skill regarding very basic processes such as tropical tropospheric variations, indicates that the modeling enterprise has not been subject to rigorous, independent “Red Team” oversight during its expensive growth period. In addition, significant advancements are needed in observing and understanding the natural processes of climate before reliable, though basic, forecasts are forthcoming. It is unfortunate, in my opinion, that recent policy has been made based on the projections of these faulty models. Climate science has a long way to go.”

Click here for full testimony.