Larsen C Breaks Off from Antarctica
An iceberg the size of Delaware with enough water to fill Lake Erie twice, about one trillion tons, just launched itself from Antarctica. The ice-shelf was floating and displaced its own weight in water and therefore will not raise global sea levels. However, it was the plug that kept land based ice from sliding into the ocean. When that happens, global sea levels will rise.
Here's the interesting quote from Dan McGrath, a glaciologist at Colorado State University.
“The Antarctic Peninsula has been one of the fastest warming places on the planet throughout the latter half of the 20th century. This warming has driven really profound environmental changes, including the collapse of Larsen A and B,” McGrath said. “But with the rift on Larsen C, we haven’t made a direct connection with the warming climate. Still, there are definitely mechanisms by which this rift could be linked to climate change, most notably through warmer ocean waters eating away at the base of the shelf.”
This is the usual scientist being conservative. Until he can address specific mechanisms linking global warming he can't make that connection. But we certainly can, after all what else could be causing this? The water temperature under the ice shelf has been increasing. Now with the ice gone that changes the albedo of that large area and it will absorb more solar radiation, an example of reinforcing positive feedback.
I have inside knowledge that Russia hacked the iceberg! That must be it.