"To determine a temperature baseline for predicting response to solar cycles 24 and 25 (we’re currently in 23), Archibald takes a startling approach. Instead of using world-wide temperature data, only data from the US mainland is used. Additionally, Archibald decided that only data from rural meteorological stations should be used to avoid the urban heat island effect. Fair enough, you may say. But the catch is, he chose just 5 stations out of the hundreds and hundreds available! Not only did he only choose 5, all 5 were within several hundred miles of each other in South Eastern USA!"

http://n3xus6.blogspot.com/2007/02/dd.html

Calling him a crank is generous, there are other ways to interpret this kind of cherry picking.

He also considers himself an expert in cancer research and oil exploration along with climate. Beware the Renaissance Man.