Roy Spencer on ‘Santer takes on Pruitt’ 

Tallbloke's Talkshop

US Environmental Protection Agency (EPA) chief Scott Pruitt
As Dr Roy Spencer points out: ‘You can’t build a case for human-caused warming by relying on natural warming! (But, they did anyway.)’

A new paper in Nature: Scientific Reports by Santer et al entitled Tropospheric Warming Over the Past Two Decades begins with this:

After a recent Senate confirmation hearing, Scott Pruitt the new Administrator of the U.S. Environmental Protection Agency received a written question regarding observed warming estimates. In response, Mr. Pruitt claimed that over the past two decades satellite data indicates there has been a leveling off of warming. We test this claim here.

Now, exactly how does one scientifically test a claim of “leveling off of warming”?

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