Using pre-industrial times as the bases for anomalies helps to illustrate something very important to persons new to global warming: climate models do a poor job of simulating past global warming. Why then should those newcomers believe the political-agenda-financed climate-model predictions of future global warming that are based on speculations about yet-to-come emissions of greenhouse gases?
Guest Post by Bob Tisdale
Apparently, based initially on a 1975 “first intuition” by an economist (not a climate scientist), politicians have sought to limit global surface warming to 2 deg C above pre-industrial levels by restricting greenhouse gas emissions. To that end, those politicians created the political entity called the Intergovernmental Panel on Climate Change (IPCC), whose sole purpose is to prepare reports to support the politicians’ agendas.
Politicians from around the globe are once again gathering this year to futilely try to reach agreement on how to achieve that goal of limiting global warming to the economist-suggested limit. So, in order to increase public awareness, we’re being bombarded weekly with speculations of pending global-warming gloom and doom. One was a recent article Earth now halfway to UN global warming limit at NewScientist. It included a graph titled “Halfway to hell”, my Figure 1, prepared by chemist Kevin…
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