The atmosphere can warm much faster than that, but even "very quick" melting would take forever, because it's hard-packed ice that's over a mile thick. At a mel

The atmosphere can warm much faster than that, but even "very quick" melting would take forever, because it's hard-packed ice that's over a mile thick. At a melting rate of two meters per summer (which is a lot, that's the equivalent of melting ~800 inches of snow), it would take over a thousand years to get to the bottom.