The data Warmers use most often comes from the UN’s IPCC, International Panel on Climate Change. In an ironic twist 20+ years into the debate more and more of the data used by skeptics comes from… yep the IPCC. If you are one that believes manmade warming is killing the planet, your beliefs are likely being fed by the mainstream media and the UN. If you’re a skeptic, you are either believing your friends or you are digging through reports and skeptic’s web sites.

Chart from Draft IPCC AR5
You could look up the 1990 IPCC report and compare its predictions for coming years. We now have 20+ years of actual data since the report was written to look at. We can see how well the IPCC did at predicting the future, not very well. But, then you would have to get into the data and see how the IPCC has been adjusting it. Start with SurfaceStations.org to get the background on why adjustments are needed and in which direction adjustments should be made. Continue reading