Studies done before Holdren’s claim that global warming is causing frigid winters also cast doubt on the integrity of the White House polar vortex video.
Research by Colorado State University’s Elizabeth Barnes in 2013 found that claims that “amplified polar warming has led to the increased occurrence of slow-moving weather patterns and blocking episodes, is unsupported by the observations.”
A study published before Barnes’s by Australian scientists James Screen and Jan Simmonds found that statistically significant changes in the jet stream depended largely on the methodology used by scientists. Screen and Simmonds noted their findings have “different and complex possible implications for midlatitude weather, and we encourage further work to better understand these.”
A recent study from Japanese scientists, however, claims that melting Arctic ice will bring colder winter with it. The study found that severe winters happening in Europe and Asia have doubled due to melting ice sheets.
Despite the conflicting evidence on the Arctic’s role in cold winters, the White House has not backed off from its claims that global warming is driving frigid weather. Even though Holdren purportedly espoused his opinion in the video, that has not been disclosed nor has the video been changed.
“Perhaps OSTP should give us a new video titled ‘The Holdren Document Vortex Explained in 2 Hours,’” Kazman quipped.
The White House did not respond to The Daily Caller News Foundation’s request for comment.
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