Cold Spell Doesn’t Undercut Climate Crisis – But Other Things Do

Ben Lieberman /

Snow storm hits nation's capital

Q: If we’re so worried about global warming why has it been so cold here in the U.S., in Europe and other parts of the globe? What do weather statistics say has happened during the past 50 years? And how does weather differ from climate (is there a difference)?

Turnabout is fair play for activists who insist that a single event like the current cold snap doesn’t disprove global warming. They’re right that it doesn’t, but neither does a summer heat wave prove it — yet this has not stopped proponents of doom from hyping each one. What matters are longer term trends, and those are pointing away from the notion that climate change is a crisis.

While the chilly start to the year does not a trend make, we are in a decade-long period of no additional warming, despite continuously rising carbon dioxide concentrations. That is a significant trend, and it is also important because it undercuts the notion that there is some near-infallible scientific consensus about global warming and mankind’s contribution to it. Consider the United Nation’s 2007 Intergovernmental Panel on Climate Change (IPCC) report, the supposed gold standard of consensus science. None of the climate models relied upon by the IPCC foresaw the current flattening out of temperatures, yet these are the models whose predictions of future warming form the basis of several US and UN proposals.

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