Antarctic Ice Melt Is Accelerating Rapidly

Antarctic Ice Melt Is Accelerating Rapidly

A separate study - also published in Nature this week - found that global sea levels could be 3 feet higher by 2070 if nothing is done to curb the ice loss in the next few years.

The rate of Antarctic ice melt has tripled since 2012, according to a new study. Suddenly removing the ice shelves attached to these sensitive areas could initiate glacier retreat and accelerate sea level rise.

The annual sea level rise that's attributed to Antarctica has tripled, from 0.2mm to 0.6mm, or from less than a tenth of an inch to almost a quarter of an inch, he says.

For the new study, the scientists combined data from three types of satellite measurements to track changes in ice over time, study co-author Andrew Shepherd, a professor of Earth observation with the School of Earth and Environment at the University of Leeds in the United Kingdom, told Live Science.

While some people blame climate change for the rapid melting ice caps, others blame underground heat sources such as volcanoes.

The amount of ice lost is nearly three times more than in the 2002-2007 period, the report said.

But another decade after that, between 2012 and 2017, that number was 219 billion metric tons of ice lost per year.

During the same period, the loss of ice for the Antarctic Peninsula went up from seven billion tonnes annually to 33 billion tonnes annually. "Without the ice shelf to act as a natural buffer, glaciers can flow faster downstream and out to sea".

Finally, the scientists are recording gravity measurements for Antarctica.

Monitoring Antarctica from space has revealed how its ice is being lost to the oceans, providing crucial insight into the continent's response to a warming climate, scientists say.

In Antarctica, it's mostly warmer water causing the melt.

Cristiano Ronaldo Accepts €18.8 Million Fine Over Tax Fraud Case
Iran's win was just their second ever at a World Cup; their only previous victory was a 2-1 win over the United States in 1998. At the age of 33, Ronaldo has already enjoyed one of the most illustrious careers in football history.

"We are able to say that the increased ice loss is mainly due to ocean-driven melting in West Antarctica", lead author Andrew Shepherd, researcher from the University of Leeds, told USA Today.

"The data from GRACE's twin satellites show us not only that a problem exists, but that it is growing in severity with each passing year".

Though the last group, led by Torsten Albrecht, wasn't involved in an observational work, their sophisticated modeling techniques did coincide with the first two studies and noted grounding line of the ice sheet was up to 200 km inland in the Weddell Sea and 400 km in the Ross Sea region. Without them, there is nothing to stop vast amounts of grounded ice forming the Antarctic Ice Sheet from flowing into the Southern Ocean and raising sea levels.

- Glaciers flowing down the ice sheet spread under their own weight as they flow toward the ocean and eventually lose contact with the bedrock, forming about 300 floating ice shelves that fringe the continent.

Millimeters of sea level rise may not sound like much, but previous surveys suggested that Antarctica's massive ice sheets likely wouldn't be affected by climate change at all.

The data showed that between 2012 and 2017 the rate of loss of ice tripled in comparison to the loss rate before the year 2012.

"Now when we look again, we can see actually that the signal is very different to what we've seen before", Shepherd said. "To do this, we need to keep watching the ice sheet closely, but we also need to look back in time and try to understand how the ice sheet responded to past climate change".

Researchers like Shepherd fear that future knowledge from satellites is at risk, however.

"Unfortunately, we appear to be on a pathway to substantial ice-sheet loss in the decades ahead, with longer-term consequences for enhanced sea-level rise; something that has been predicted in models for some time".

"Whilst there's still considerable uncertainty about East Antarctica mass balance, it is increasingly clear that ice loss from West Antarctica has accelerated", said Kate Hendry, a researcher at the University of Bristol, commenting on the findings.

"They're melting the ice at rates that far exceed anything that would change in the air, and these are forces that you can't reverse easily".

Related Articles

  • Trump says his agreement with North Korea will be good for China

    Trump says his agreement with North Korea will be good for China

    Asked why he appeared to be downplaying the human rights issue, Trump said he is focused on making progress elsewhere. TRUMP on Kim Jong Un (note the final two sentences): " He's the head of a country, and I mean he's the strong head ".
    OnePlus 6 sells its first million units at its fastest rate ever

    OnePlus 6 sells its first million units at its fastest rate ever

    Previously, OnePlus's benchmark for that goal was three months, with both the OnePlus 5 and OnePlus 5T earning that trophy. The base variant comes with 6GB RAM and 64GB of storage at a price of Rs 34,999.

    Jason Momoa, Nicole Kidman, Amber Heard transform into majestic Atlanteans

    The images reveal Patrick Wilson's Orm and Dolph Lundgren's King Nereus meeting at The Council of the Kings. We also get to see a look at Aquaman's nemesis, Black Manta (Yahya Abdul-Mateen II).
  • 1 deputy killed, 1 critical in shooting in Kansas, sheriff says

    1 deputy killed, 1 critical in shooting in Kansas, sheriff says

    A Wyandotte County deputy has died and one remains in critical condition following a shooting this afternoon in Kansas City, Kan . Tactical officers secured the area, and negotiators tried to make contact with the woman, Colon said.
    Trump fires $50bn salvo in trade war with China

    Trump fires $50bn salvo in trade war with China

    After talks in Beijing and Washington , a preliminary deal was struck that appeared to put the trade restrictions on hold . China, the world's No. 2 economy behind the U.S. , has pledged to retaliate on USA exports including soybeans and pork.
    Trump says Michael Cohen isn't his lawyer anymore

    Trump says Michael Cohen isn't his lawyer anymore

    The previous night, he had said of the motion: "The motion for a gag order is a complete joke and baseless", he said. Avenatti went to social media to decry the attempt to take away his spotlight, tweeting: "We just learned that Mr.
  • IAEA: Offers help to verify future US-North Korea deal

    IAEA: Offers help to verify future US-North Korea deal

    He fought mostly along the 38th Parallel, which is the dividing line between North and South Korea. The language only reaffirmed previous agreements and, in some cases, was milder.
    Celtics' Irving coy on possible reunion with LeBron

    Celtics' Irving coy on possible reunion with LeBron

    I'll believe these things when I see them. "I'm pretty sure management and I will have a talk, but that talk won't happen now". If Ainge does not like what he sees, it will be more hard to be patient with what should be a finished product.
    NASA has been preemptively sued to protect Neil Armstrong-gifted moon dust

    NASA has been preemptively sued to protect Neil Armstrong-gifted moon dust

    While the young girl kept the note with her, she couldn't keep a track of the vial and had not seen it in decades. That's one small vial... and one potentially giant piece of litigation.
  • Computer glitch strands thousands of travelers at Charlotte airport

    Computer glitch strands thousands of travelers at Charlotte airport

    American Airlines says it has fixed a technology problem that was grounding flights to and from Dallas, Chicago and Miami on. American Airlines flights set for Friday are continuing on as scheduled, officials said, CBS-affiliated WSPA reported.
    Microsoft Surface Rumor Roundup: Everything We Know So Far

    Microsoft Surface Rumor Roundup: Everything We Know So Far

    A new ZDNet report now suggests that Microsoft will launch the Surface Pro 6, or whatever the company decides to call it, in 2019. I wouldn't expect this to replace the official Surface charger, but it should give you a little bit of extra power in a pinch.
    Fans call for Nike boycott after Iran WC 'disgrace'

    Fans call for Nike boycott after Iran WC 'disgrace'

    While Morocco leak their wounds, it is all celebration for Iran who are recording their first FIFA World Cup win in 20 years. Both teams face tough tests Wednesday, as Morocco will play Portugal and Iran will face Spain.