By Dr. Tim Ball – Re-Blogged From WUWT
Somebody said economists try to predict the tide by measuring one wave. This puts them in the same league as climate scientists trying to predict the climate by measuring one variable, CO2. It is no surprise that an amalgam of the two, climate and economics, produces even worse results, but that is what happened early in the anthropogenic global warming (AGW) deception.
The 1990 Intergovernmental Panel on Climate Change (IPCC) Report was, under the circumstances, a reasonable document within the bounds of what it set out to achieve. Yes, it was limited to only human causes of climate change by the definition given to it by the United Nations Framework Convention on Climate Change (UNFCCC). Yes, it was bureaucratically controlled by its creation through the World Meteorological Organization (WMO). Yes, it was built on a system that seemed to predetermine the outcome. Still, the overall Report provides a reasonable attempt to create an historical context for the hypothesis that human CO2 was causing global warming.