Posted 29 October 2014
In a comprehensive paper, Dr William Kininmonth, former head of Australia's National Climate Center, traces the history of the recording of global temperatures, and the development of computerised General Circulation Models (GCMs) for tracking purposes. He concludes thsat GCMs prpovbide a poor benchmark "given the uncertainties in the magnitudes of natural and and anthropogenic forcing parameters and the unknown contribution of internal variability." He adds: "The real sensitivity of climate to anthropogenic activity must remain an open question."
Download this important paper here