Climate Models Have Been Predicting Too Much Warming

Dr John Christy, University of Alabama at Huntsville

Speaking to a meeting in the Palace of Westminster in London, Professor John Christy of the University of Alabama in Huntsville told MPs and peers that almost all climate models have predicted rapid warming at high altitudes in the tropics:

“They all have rapid warming above 30,000 feet in the tropics – it’s effectively a diagnostic signal of greenhouse warming. But in reality it’s just not happening. It’s warming up there, but at only about one third of the rate predicted by the models.”

A similar discrepancy between empirical measurements and computer predictions has been confirmed at the global level:

“The global warming trend for the last 40 years, starting in 1979 when satellite measurements began, is +0.13C per decade or about half of what climate models predicted.”

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