The dire climate prediction made by former NASA scientist James Hansen “significantly overstates the warming” observed in the real world since the 1980s, according to an analysis.
Economist Ross McKitrick and climate scientist John Christy found observed warming trends match the low end of what Hansen told Congress during a hearing on global warming organized by then-Congressman Al Gore.
“Climate modelers will object that this explanation doesn’t fit the theories about climate change,” the two wrote.
“But those were the theories Hansen used, and they don’t fit the data. The bottom line is, climate science as encoded in the models is far from settled.”
Cato Institute climate scientists Patrick Michaels and Ryan Maue wrote that “surface temperatures are behaving as if we had capped 18 years ago the carbon-dioxide emissions responsible for the enhanced greenhouse effect.”
“But we didn’t. And it isn’t just Mr. Hansen who got it wrong,” Michaels and Maue wrote in The Wall Street Journal in June. – READ MORE
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