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-- OriginalOwner_ [tinyurl.com] writes:

from the going,-going... dept.

Climate Central reports [climatecentral.org]

A massive iceberg roughly 225 square miles in size--or in more familiar terms, 10 times the size of Manhattan--broke off [from the Pine Island Glacier] in July 2015. Scientists subsequently spotted cracks in the glacier [climatecentral.org] on a November 2016 flyover. And in January, another iceberg cleaved off the glacier.

Satellite imagery captured the most recent calving event, which Ohio State glaciologist Ian Howat said " is the equivalent of an 'aftershock'" following the July 2015 event. The iceberg was roughly "only" the size of Manhattan, underscoring just how dramatic the other breakups have been.

[...]The ocean under Pine Island Glacier's ice shelf has warmed about 1°F since the 1990s. That's causing the ice shelf to melt and pushing the grounding line--the point where the ice begins to float--back toward land, creating further instability.

[...]The glaciers [such as the Pine Island Glacier] and ice shelves [such as the Larsen C ice shelf, which is on a death watch] help hold back a massive ice sheet on land. Their failure would send that ice to the ocean, pushing sea levels up to 13 feet higher [climatecentral.org] than they are today.

[...]Cutting carbon pollution presents the only path forward to stave off the worst impacts of a melting Antarctic.

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