EEE 2014: Was the Cold Eastern Us Winter of 2014 Due to Increased Variability?

Main finding:

The near-record number of extremely cold days during winter 2014 in the eastern United States cannot be attributed to trends or variability changes. Daily temperature variability is actually decreasing, in contrast to CMIP5 simulations and projections.

Larger report:

EEE 2014 = Explaining Extreme Events of 2014 from a Climate Perspective