Freakishly Warm Weather in the Arctic Has Climate Scientists 'Stunned'
Melting sea ice in the Arctic creates a feedback loop that promotes even more warming.
Credit: NOAA
During the Arctic winter, when the sun hides from October to March, the average temperature in the frozen north typically hovers around a bone-chilling minus 4 degrees Fahrenheit (minus 20 degrees Celsius). But this year, the Arctic is experiencing a highly unusual heat wave.

On Feb. 20, the temperature in Greenland not only climbed above freezing — 32 degrees F (0 degrees C) — it stayed there for over 24 hours, according to data from the Danish Meteorological Institute. And on Saturday (Feb. 24) the temperature on Greenland's northern tip reached 43 degrees F (6 degrees C), leading climate scientists to describe the phenomenon on Twitter as "crazy," "weird," "scary stuff" and "simply shocking."