As anomalias têm tendências definidas

Last Two Winters' Warm Extremes More Severe Than Their Cold Snaps, Study Finds | ThinkProgress

Scientist:  “The warm extremes kept trending just as one would expect in a period of accelerating global warming.”

Locations where the seasonal “severe cold index” (blue circles) or “severe heat index” (red circles) fell above the 95% confidence interval of the North Atlantic Oscillation regression for (a, c) Winter 2010 and (b, d) Winter 2011.