Ну да, арктика теплеет, льды тают, и из-за потепления в арктике арктические вторжения становятся чаще и интенсивнее:

Despite global warming, recent winters in the Northeastern US, Europe and especially Asia were anomalously cold – some regions like Western Siberia even show a downward temperature trend in winter. In stark contrast, the Arctic has been warming rapidly. Paradoxically, both phenomena are likely linked: When sea-ice North of Scandinavia and Russia melts, the uncovered ocean releases more warmth into the atmosphere and this can impact the atmosphere up to about 30 kilometers height in the stratosphere disturbing the polar vortex. Weak states of the high-altitude wind circling the Arctic then favors the occurrence of cold spells in the mid-latitudes.