CTVNews: Scientists find another threat to Greenland’s glaciers lurking beneath the ice

Gisela Crespo CNN Published Tuesday, February 4, 2020 2:31AM EST

glacier
The 79 North Glacier’s ice tongue is in northeast Greenland. (Nat Wilson/Alfred Wegener Institute/CNN)

Scientists have long known that higher air temperatures are contributing to the surface melting on Greenland’s ice sheet.

But a new study has found another threat that has begun attacking the ice from below: Warm ocean water moving underneath the vast glaciers is causing them to melt even more quickly.

The findings were published Monday in the journal Nature Geoscience by researchers who studied one of the many “ice tongues” of the Nioghalvfjerdsfjorden Glacier — also known as the 79° North Glacier — in northeast Greenland.

An ice tongue is a strip of ice that floats on the water without breaking off from the ice on land. The massive one these scientists studied is nearly 50 miles long.

The survey revealed an underwater current more than a mile wide where warm water from the Atlantic Ocean is able to flow directly towards the glacier, bringing large amounts of heat into contact with the ice and accelerating the glacier’s melting.

Read more at CTVNews.ca …

CTVNews: Giant iceberg breaks off Antarctic glacier

Dominic Rech CNN Published Thursday, February 13, 2020 2:12AM EST

Pine Island Glacier
The Pine Island Glacier recently spawned an iceberg over 300 square kilometres that very quickly shattered. This image, captured Tuesday by the Copernicus Sentinel-2 mission, shows the freshly broken bergs in detail. (European Space Agency)

A story about a glacier shedding mass at the edge of the world, threatening to raise ocean levels and potentially contribute to untold environmental change.

Sound familiar? That’s because it probably is. But if you weren’t paying attention before, it probably is worth doing so now.

An iceberg has broken off Pine Island Glacier (PIG) on the edge of Antarctica, according to satellite images taken Tuesday by the European Space Agency (ESA).

And it’s a big one. At more than 300 square kilometres (116 square miles), the iceberg was almost as big as Atlanta and roughly the same size as Malta — although it very quickly fragmented.

“What you are looking at is both terrifying and beautiful,” Mark Drinkwater, head of the Earth and Mission Sciences Division at the ESA, told CNN.

Read more and see the Video at CTVNews.ca …