Global Warming - December 2015

Climate Central: Two Charts Show December’s Crazy Warmth

The higher ratio of record highs to lows is a hallmark of global warming, which skews the odds in favor of the former. Without warming, the ratio would be about 1-to-1, at least on the scale of years or decades. But over the past two decades, those figures have tilted 2-to-1 in favor of record heat.