If you have any doubt the balance of the globe has warmed over the last century, view this chart:
But since the 1970s, the blue and green shades rapidly erode and oranges and reds take over, dramatically.
The rapid warming at the northern high latitudes especially jumps out in recent decades, reflecting “Arctic amplification” or more intense warming in the Arctic. Although the warming is most pronounced up north, it is apparent at almost every latitude.
(And yes, you can even sense the much discussed slow-down in the rate of warming over the last 10-20 years as the coverage of oranges and reds has remained pretty static)
Of course, it is widely accepted the Earth has warmed in the last century. Or, as the Intergovernmental Panel on Climate Change put it in 2007, the warming of the climate system is “unequivocal.”
But even as the debate has moved on from whether warming has occurred to the effects, there remain some doubters. Show them this this chart – it packs an incredible amount of data into one tidy, irrefutable visual.
Chart hat tip: Michael Tobis
Related: You can’t deny global warming after seeing this graph (Ezra Klein, Wonk Blog)