How Feedback Loops Are Driving Runaway Climate Change | Exposing the Big Game

How Feedback Loops Are Driving Runaway Climate Change | Exposing the Big Game

His prognosis for the Arctic sea ice is grim: He says it is in its “death spiral.”

“Multi-year ice is now much less than 10 percent of the area of the ice cover; it was 60 percent or more before 2000,” Dr. Wadhams told Truthout. “[Sea ice] extent in summer is down to 50 percent of its value in the 1980s.”

Dr. Wadhams, who is also the President of the International Association for the Physical Sciences of the Ocean (IAPSO), noted that this primary feedback loop is much further along than most of us realize.

“I see the summer sea ice disappearing by the early 2020s,” Wadhams said. He noted that the change of albedo (a measure of reflection of solar radiation) due to the loss of sea ice and snowline retreat across the Arctic “is sufficient to add 50 percent to the warming effect of CO2 emissions alone.”

Alarmingly, on August 21, Arctic scientists told The Guardian that the oldest and strongest sea ice in the Arctic had broken up for the first time in recorded history.

via How Feedback Loops Are Driving Runaway Climate Change | Exposing the Big Game