The Arctic “Death Spiral” Continues

Old Arctic Ice Is Disappearing and Taking the Rest of the Ice With It.
Zastavkin/Thinkstock

Zastavkin/Thinkstock

The National Oceanic and Atmospheric Administration recently released a video that shows compellingly just how bad things are getting at the top of the world. The animation displays Arctic ice over time not just by how much area it covers, but also by age, with white being the oldest ice (nine years or older):

It’s not hard to see that over the past few years, the oldest ice has melted away, and over time the ice gets younger. That’s not good: Older ice is thicker and tends to hang around longer; young ice is generally thinner and melts away every summer. That means that the year-round amount of ice is dropping, and dropping rapidly. As the Arctic warms, its ability not just to form ice but to keep it wanes.

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