Climate change: Haunting timelapse shows Arctic sea ice slip away. [VIDEO]

A Haunting Timelapse Video Shows Arctic Sea Ice Slowly Slip Away

A Haunting Timelapse Video Shows Arctic Sea Ice Slowly Slip Away

Future Tense
The Citizen's Guide to the Future
Jan. 23 2015 10:00 AM

A Haunting Timelapse Video Shows Arctic Sea Ice Slowly Slip Away

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IN FLIGHT - APRIL 21: From an altitude of 500 feet a photographer captures an image of an iceberg from the cargo ramp of a Coast Guard Hercules C-130 Aircraft April 21, 2003 in the north Atlantic Ocean. The International Ice Patrol flies over the north Atlantic searching for icebergs every other week during iceberg season, which is from February to July. The crew records the iceberg's shape, size and location in an effort to prevent collisions between ships and icebergs. The patrol, organized by the U.S. Coast Guard and supported by 18 nations, has searched the waters since the year following the Titanic disaster. (Photo by Harry Gerwin/Getty Images)

Photo by Harry Gerwin/Getty Images

A warning: The video you’re about to watch is heartbreaking. In just a few seconds, you’ll see 27 years of Arctic sea ice melt like a handful of snowflakes next to a space heater.

The animation is beautiful, until you realize the implications. Sea ice has become the canary in the coal mine of global climate change.

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This animation was produced by painstakingly tracking individual bergs of sea ice for years by satellite and ocean buoys. According to climate.gov, as the animation begins in the 1980s, 26 percent of the Arctic ice pack was four years old or older. By last year, that number had dropped to 10 percent. The oldest ice, once common throughout the Arctic, is now banished to a narrow region near northern Canada.

The Arctic has been warming twice as fast as the rest of the planet in recent years, due in part to the loss of the bright white reflecting surface of sea ice. Darker water is able to retain more heat, leading to a self-reinforcing cycle of melting. A recent study showed that as more of the Arctic reverts to open water, winds are increasing and waves are growing larger—which are further enhancing ice loss. Another study showed that changes in the Arctic may be altering the weather, too.

Here’s what’s happening: For the last 15 years or so, increasingly warm water has been making its way northward, through the narrow gap between Alaska and Russia. Once inside the Arctic, the warm water turns into an ice-eating machine. The summer surge of warmth gnaws away at the edges of the ever-shrinking gyre of floating ice, a relic of the Arctic’s frozen past. New ice can no longer replace the ice that is naturally lost through the Fram Strait, east of Greenland. The result has been a sharp decline in old ice in recent years, with much less resilient younger ice taking its place.

According to the National Snow and Ice Data Center, the 10 lowest Arctic sea ice seasons have all occurred in the last 10 years.

Last year’s melt season was more of the same—resulting in the sixth-lowest extent on record, with open water as far north as 300 miles from the North Pole. That was a new record for the satellite era, which began in 1979.

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Arctic sea ice is shrinking at a rate of 13.3 percent per decade, making an ice-free Arctic inevitable should the trend hold, as expected.

Image: National Snow and Ice Data Center

Profound changes to the Arctic may be inevitable, but that doesn’t mean climate change is a lost cause. The most recent report from the Intergovernmental Panel on Climate Change said there’s still two precious decades left before the world is locked in to “dangerous” levels of global warming. That ought to be all the motivation we need.

Future Tense is a partnership of SlateNew America, and Arizona State University.

Eric Holthaus is a meteorologist who writes about weather and climate for Slate’s Future Tense. Follow him on Twitter.