Climatologists warn of a tipping point when global temperatures trigger unavoidable catastrophic events and sea levels rise more than 50 feet.What single event would cause the sea level to rise so greatly?

Question

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The melting of the Greenland Ice Sheet, which holds enough water to raise global sea levels by 20 feet, is the most likely single event that would cause sea levels to rise by more than 50 feet. The melting of the polar ice cap and thermal expansion of the oceans would also contribute to sea level rise, but not as significantly as the melting of the Greenland Ice Sheet. Increased precipitation over the continents could contribute to sea level rise indirectly, by causing more runoff and erosion, but would not be the primary cause of such a drastic rise in sea level.

Climatologists Warn of a Tipping Point When Global Temperatures Trigger