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A lot of the climate models seem to have modelled the ice sheets as ice cubes when they behave more like a drop of honey. Ice cubes are very poor heat conductors, insulate their own interior, and only melt on the surface. A drop of honey gets less viscous and flows more easily as it warms up. But I am not an expert on climate modelling.
Lately I have been reading articles in Science News and elsewhere about glacial lakes melting holes through very thick glaciers and disappearing through said holes. It appears that this additional water further lubricates the interface between the ice and the rock below, increasing the rate of glacier flow.
Then I have seen footage of how meltwater pours into deep crevasses in the Antarctiva ice sheet, going directly to the bedrock where it lubricates the interface between the ice and the rock. I am not convinced large chunks of the Antactica ice cap couldn't simply slide into the sea as a result of this lubrication. The brainless should not be in banking. — Willem Buitler
A few responses up, nanne actually links to one of the articles that illustrate the point, namely:
Don't understand me wrong, if global temperatures creep up another 2 degrees, we are in deep serious - which is why business-as-usual GHG emissions cannot hold.
The brainless should not be in banking. — Willem Buitler
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