Ice progression

Ice progression

Modeled Antarctic ice sheet at particular times through the warm Marine
Isotope Stage 31 event, around 1.07 million years ago. A similar drastic
collapse of West Antarctic ice may happen in the next few thousand years
due to greenhouse-gas warming. Ice-sheet elevations and floating ice-shelf
thicknesses shown by two different color scales, "yr BP" is
"years before present".

IMAGE: Penn State
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