For Your Society

share this with the people

Antarctica Is Melting More Than Twice as Fast as in 2012

Between 60 and 90 percent of the world’s fresh water is frozen in the ice sheets of Antarctica, a continent roughly the size of the United States and Mexico combined. If all that ice melted, it would be enough to raise the world’s sea levels by roughly 200 feet

While that won’t happen overnight, Antarctica is indeed melting, and a study published Wednesday in the journal Nature shows that the melting is speeding up.

The rate at which Antarctica is losing ice has more than doubled since 2012, according to the latest available data. The continent is now melting so fast, scientists say, that it will contribute six inches (15 centimeters) to sea-level rise by 2100. That is at the upper end of what the Intergovernmental Panel on Climate Change has estimated Antarctica alone could contribute to sea level rise this century.

“Around Brooklyn you get flooding once a year or so, but if you raise sea level by 15 centimeters then that’s going to happen 20 times a year,” said Andrew Shepherd, a professor of earth observation at the University of Leeds and the lead author of the study.

Even under ordinary conditions, Antarctica’s landscape is perpetually changing as icebergs calve, snow falls and ice melts on the surface, forming glacial sinkholes known as moulins. But what concerns scientists is the balance of how much snow and ice accumulates in a given year versus the amount that is lost.

Between 1992 and 2017, Antarctica shed three trillion tons of ice. This has led to an increase in sea levels of roughly three-tenths of an inch, which doesn’t seem like much. But 40 percent of that increase came from the last five years of the study period, from 2012 to 2017, when the ice-loss rate accelerated by 165 percent.

Antarctica is not the only contributor to sea level rise. Greenland lost an estimated 1 trillion tons of ice between 2011 and 2014. And as oceans warm, their waters expand and occupy more space, also raising sea levels. The melting ice and warming waters have all been primarily driven by human emissions of greenhouse gases.

ImageSea ice and a small stretch of open water where the Venable Ice Shelf meets Farwell Island in Antarctica.CreditJohn Sonntag/NASA

The study also helps clear up some uncertainty that was linked to regional differences in Antarctica. West Antarctica and the Antarctic


READ MORE @

Facts are under attack! Support Real Journalism.

https://www.nytimes.com/2018/06/13/climate/antarctica-ice-melting-faster.html?partner=rss&emc=rss

  • Respect (0%)
  • Funny (0%)
  • Disappointment (0%)
  • Anger (0%)
  • Stress (0%)
  • Whatever (0%)

For Your Society is a media organization that brings you curated news from trusted and reputable sources. We encourage you to support these publications and their journalists by subscribing to their services. Our intent is to stand up for facts, and to present them in an appealing and condensed way that doesn’t waste your whole day. We bring you news that focuses on politics, American culture, foreign policy and the world, science and more.

We also produce podcasts focusing on facets of American society. Premiering soon will be a new series called Whiskey and Immigrants, in which we sit down with real immigrants to hear their stories. Shortly after that we will debut a podcast unlike any other, called Unite or Die. We’re keeping the details of that one under wraps, but we think it will truly benefit society.

We try not to be too annoying with ads or pop-ups, so we mostly rely on your purchases from the FY Society Store and donations through Patreon to sustain our non-profit operations, please consider doing what you can.

WE NEED YOUR SUPPORT

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Close Menu