Don’t tell me there’s no such thing as global warming:

Ancient ice shelf breaks free in Canadian Arctic

Breakaway may ‘signal the onset of accelerated change,’ researchers say

TORONTO – A giant ice shelf has snapped free from an island south of the North Pole, scientists said Thursday, citing climate change as a “major” reason for the event.

The Ayles Ice Shelf — all 41 square miles of it — broke clear 16 months ago from the coast of Ellesmere Island, about 500 miles south of the North Pole in the Canadian Arctic.

Scientists discovered the event by using satellite imagery. Within one hour of breaking free, the shelf had formed as a new ice island, leaving a trail of icy boulders floating in its wake.

Warwick Vincent of Laval University, who studies Arctic conditions, traveled to the newly formed ice island and couldn’t believe what he saw.

“This is a dramatic and disturbing event. It shows that we are losing remarkable features of the Canadian North that have been in place for many thousands of years,” Vincent said. “We are crossing climate thresholds, and these may signal the onset of accelerated change ahead.”

***

Using U.S. and Canadian satellite images, as well as seismic data — the event registered on earthquake monitors 155 miles away — Copland discovered that the ice shelf collapsed in the early afternoon of Aug. 13, 2005.

Copland said the speed with which climate change has effected the ice shelves has surprised scientists.

“Even 10 years ago scientists assumed that when global warming changes occur that it would happen gradually so that perhaps we expected these ice shelves just to melt away quite slowly,” he said.