# New Report Confirms Antarctica Is Melting Away as We Watch, Faster Every Year

A new report from NASA and UC–Irvine confirms—again—that Antarctica is melting away.

The scientists used observations from four different techniques to measure the amount and change in rate of ice loss from a region in West Antarctica. This area was already known to be melting at an astonishing rate; a recent study using Cryosat 2 showed that in the period from 2010 to 2013, the region was losing ice to the tune of 134 billion metric tons of ice per year.

The new study looked at four observation sets covering the years 1992–2013. They found that on average over that time, ice loss from West Antarctica was about 83 billion metric tons per year … but the average increase in that loss was 6.1 billion tons every year. By the end of the time range, the numbers between the new study and the one from CryoSat2 are consistent.

This is staggering. Staggering. Imagine a block of ice a mile wide, a mile long, and a mile high—the size of a mountain. That would weigh something less than 6 billion tons.*

But it’s worse than that. We’re not just losing more ice every year; the rate itself is accelerating. We’re losing ice faster now than we were 21 years ago, and the rate at which we’re losing ice has more than doubled that average over that time span.

Think of it this way. Imagine in a given year that area lost 100 billion tons of ice. At an increase of 6 billion more tons per year every year, then the next year it would lose 106 billion tons, then 112 the year after that, and so on.

But in fact that loss rate is increasing. So it goes from 100 billion tons one year to 106 the next, then (say) 113 the year after that, to (say) 121 after that … The new study indicates that at the more recent end of the time range (2003-2011), ice loss is accelerating by nearly 16 billion tons per year every year.

This is the same math as freefall, an apt analogy. Antarctica is melting. Fast.

And this isn’t some natural variation, it’s not sunspots, it’s not the Earth’s orbit changing. It’s us. These changes aren’t happening on geologic or astronomical timescales, they’re happening on human timescales. We’re dumping carbon dioxide into the air at an accelerated rate, and there’s now more CO2 in the atmosphere than there has been for at 800,000 years. As my Slate colleague Eric Holthaus points out, the North Pole is draining away as well. We’re melting at both poles.