This is not the sort of news I usually pick up on, but I quote below the retired senior NASA atmospheric scientist Dr. John S. Theon, and former supervisor of James Hansen, both because of the relevance to modelling practise, and because he captures so exactly what has driven me out of science over the last 5 years, and onto the blogosphere.
Theon declared â€œclimate models are useless.â€ â€œMy own belief concerning anthropogenic climate change is that the models do not realistically simulate the climate system because there are many very important sub-grid scale processes that the models either replicate poorly or completely omit,â€ Theon explained. â€œFurthermore, some scientists have manipulated the observed data to justify their model results. In doing so, they neither explain what they have modified in the observations, nor explain how they did it. They have resisted making their work transparent so that it can be replicated independently by other scientists. This is clearly contrary to how science should be done. Thus there is no rational justification for using climate model forecasts to determine public policy,â€ he added.
If climate models are useless, what does this make the order of magnitude larger community of scientists in the climate change effects community who use these models to prophesy impending doom: dupes, enabelers, or marketers of the latest trendy idea? Sorry guys.