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Study: ‘Extreme’ Winter Storms Not Caused By Global Warming

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The most severe blizzards, including the one experienced this past winter on the east coast, is not caused by climate change, a newly released study says.
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Penn State climatologist Michael Mann told The Washington Post in January that “The U.N. Intergovernmental Panel on Climate Change has found that nor’easters” like the one that had just occurred “may grow stronger [with] human-caused climate change, as they are driven by the contrast between cold Arctic air masses and ever-warming ocean surface temperatures.”
But scientists from ETH Zurich and the California Institute of Technology in Pasadena, California, published a report entitled “Physics of Changes in Synoptic Midlatitude Temperature Variability” in the American Meteorological Society’s Journal of Climate, which argues the opposite of the U.N.’s panel.
“Arctic amplification of global warming similarly entails a large-scale reduction of the near-surface temperature variance in Northern Hemisphere midlatitudes, especially in winter,” said an abstract of the report.
“The probability density functions of synoptic near-surface temperature variations in midlatitudes are statistically indistinguishable from Gaussian, both in reanalysis data and in a range of climates simulated with idealized and comprehensive GCMs.
“This indicates that changes in mean values and variances suffice to account for changes even in extreme synoptic temperature variations,” it added.
“Despite lower temperature variance, there will be more extreme warm periods in the future because the Earth is warming,” said Tapio Schneider, one of the report’s co-authors, in a statement. “The waviness of the jet stream that makes our day-to-day weather does not change much.”
Last week, Rep. Barbara Lee, D-Calif., submitted a resolution in the House suggesting women might be forced into prostitution due to climate change.

Read more at http://www.westernjournalism.com/study-extreme-winter-storms-not-caused-global-warming/#0v0hCrYKLW3QoywS.99

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