Climate change as predicted in 1981. Grey shows predictions from global temperature rise via computer models run of Hansen et al 198. Red shows real world data taken since paper was published. Geert Jan van Oldenborgh and Rein Haarsma, KNMI, RealClimate hide caption toggle caption Geert Jan van Oldenborgh and Rein Haarsma, KNMI, RealClimate 13.7: Cosmos And Culture How Good Were Climate Models 30 Years Ago? July 17, 2012 The basic principles of climate science have been mature for a while.