If you have any doubt the balance of the globe has warmed over the last century, view this chart.
Produced by NASA, the chart illustrates how temperatures have compared to “normal” from 1880 to present, from pole to pole.
From the 1880 to the 1920s, blue and green shades dominate the chart, signaling cooler than normal temperatures in that era. Then, from the 1930s to the 1970s, warmer yellow, oranges, and reds shades ooze in, balancing the cooler shades.
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.
But since the 1970s, the blue and green shades rapidly erode and oranges and reds take over, dramatically.
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