Kesten Green, Scott Armstrong and Willie Soon write in the Financial Post:
We tested our no-change model using the same data that the IPCC uses. To do so, we produced annual forecasts with no trend from one-to-100 years ahead starting from 1851 and stepping forward year-by-year until 1975, the year before the current warming alarm was raised. We did the same for the IPCC scenario of temperatures increasing at a rate of 0.03°C per year in response to exponentially increasing human carbon dioxide emissions. This procedure yielded 7,550 forecasts for each method.
There are no scientific forecasts of dangerous global warming
The results? Overall, the no-trend forecast error was one-seventh the error of the IPCC scenario temperatures. The no-trend forecasts were as accurate or more accurate than the IPCC scenario temperatures for all forecast horizons. Crucially, the relative accuracy of the no-trend forecasts increased for longer horizons — for example, the no-trend forecast error was one-twelfth that of the IPCC scenario temperatures for 91-to-100-year ahead forecasts.