[Texas Eagle]

Between 1992 and 2017, Antarctica lost more than 3.3 trillion tons of ice, causing sea levels around the globe to rise an average of 8 millimeters.

I don't have my conversion chart handy. How many feet is that?

[Steely Tom]

I calculate that a 8mm thick shell covering the entire earth would have a volume of 4.08x10¹² cubic meters; that volume if filled with water would weigh 4.08x10¹⁵ kg, or 4080 trillion metric tons. That calculation assumes the radius of the earth is 6371 km.

But we're all taught that the oceans cover only 70% of Earth's surface, so I multiply by 0.7 to get to get 2860 trillion metric tons.

The article claims that 3.3 trillion tons of water released into the oceans would raise global sea level by 8 mm. It looks like they're off by pretty nearly a factor of 1000.

I say 8mm would be 2860 trillion metric tons, they say 3.3 trillion tons would do it. Even if we allow for the 10% difference between a "metric ton" and a "ton," they're still way off.