It was mentioned in recent discussion that Cohen et al. (2012) found recent winter cooling in much of the boreal (northern but not necessarily Arctic) northern hemisphere. In fact, here’s their key graph for that particular question:
Colors show the wintertime temperature trend from 1988 through 2010, with red indicating warming while blue indicates cooling, based on the HadCRUT3 gridded temperature data set. They note cooling in northern Europe, Russia, and eastern North America.