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Simple Model Leaves Expensive Climate Models Cold

By J. Scott Armstrong and Kesten Green -- November 23, 2009

[Editor’s note: J. Scott Armstrong and Kesten C. Green, first time guest posters, are leading researchers in the field of forecasting. Scott Armstrong is a Professor at the Wharton School of the University of Pennsylvania and Kesten Green is a Senior Research Fellow at the Business and Economic Forecasting Unit at Monash University]

We have recently proposed a model that provides forecasts that are over seven times more accurate than forecasts from the procedures used by the United Nations Intergovernmental Panel on Climate Change (IPCC).

This important finding, which we report in an article titled “Validity of climate change forecasting for public policy decision making” in the latest issue of the International Journal of Forecasting, is the result of a collaboration between climate scientist Willie Soon of the Harvard-Smithsonian Center for Astrophysics, and ourselves.…