"It is a blanket condemnation of an individual so as to avoid discussing the substance of a person's views on the issue," said Mr. Pielke, who holds a Ph.D. in meteorology.
New York Times labels William Happer, Princeton physicist, a 'climate denialist,' faces backlash
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"These southward movements of part of the vortex have always occurred," said University of Colorado Boulder atmospheric scientist Roger A. Pielke Sr. "With respect to climate, a strong polar vortex occurs when it is particularly cold at higher latitudes.
Scientists: 'No evidence' climate change causing cold from polar vortex dips
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