News / Science & Technology

Reports Raise Alarm About Sea Level Rise

File - An Adelie penguin stands atop a block of melting ice near the French station at Dumont d’Urville in East Antarctica Jan. 23, 2010.
File - An Adelie penguin stands atop a block of melting ice near the French station at Dumont d’Urville in East Antarctica Jan. 23, 2010.

Related Articles

Ice Loss from Antarctic Glacier Unstoppable

The glaciers in the Amundsen Sea sector of West Antarctica contain enough ice to raise the global sea level by more than a meter

US Energy Efficiency Bill Falls to Congressional Dysfunction

Energy Savings and Industrial Competitiveness Act fails to get three-fifths backing required to proceed to final vote, becoming latest victim of partisan warfare on Capitol Hill

Video As Planet Warms, Winds Keep Antarctic Cool

Westerly wind belt that circulates continent are stronger now than at any time in past 1000 years
VOA News
There were two worrying reports about sea level rise today.
 
First, scientists in Europe said that Antarctica is losing up to 176 billion tons of ice every year, based on data collected by the Cryosat spacecraft.
 
The rate of loss during 2010 to 2013 was double that from the last time a survey was done from 2005 to 2010.
 
The resulting water, scientists said, could raise sea levels up to .43 mm every year.
 
The findings were published in the journal Geophysical Research Letters.
 
In another development, NASA and scientists at the University of California, Irvine (UCI) said canyons buried under Greenland’s ice are deeper and longer than previously thought, which could mean more sea level rise as the ice in them melts.
 
"The glaciers of Greenland are likely to retreat faster and farther inland than anticipated, and for much longer, according to this very different topography we have discovered,” said Mathieu Morlighem, a UCI associate project scientist who is lead author of the new research paper in a statement.
 
While ice melt in Greenland has accelerated in recent decades, older models predicted that the ice would retreat to higher, more stable ground, slowing the melt.
 
Morlighem's discovery shows that because of the unexpected depth and length of the canyons, it will be longer before the ice melt slows.
 
Using radar penetrating radar, Morlighem and his team showed that Greenland’s southern coastline is serrated with “more than 100 canyons beneath glaciers that empty into the ocean.”
 
Some of the canyons are below sea level up to 100 kilometers inland.
 
Co-author Eric Rignot of UCI and NASA's Jet Propulsion Laboratory said in a statement that studies like this “illustrate clearly the globe’s ice sheets will contribute far more to sea level rise than current projections show.”
 
Rignot and his team also released a study last week that said ice melt in western Antarctica was “unstoppable.”
 
The results were published Sunday in the journal Nature Geoscience.

Here's a video about the Greenland canyons:
 

You May Like

Photogallery South Africa Bans Travelers From Ebola-stricken Countries

South Africans returning from affected West African countries will be thoroughly screened, required to fill out medical questionnaire, health minister says More

Multimedia UN Launches ‘Biggest Aid Operation in 30 Years’ in Iraq

Move aims to help thousands of Iraqi religious minorities who fled their homes as Kurdish, Iraqi government forces battle Sunni insurgents More

Video African Media Tries to Educate Public About Ebola

IT specialists, together with radio and TV reporters, are battling misinformation and prejudice about disease More

This forum has been closed.
Comment Sorting
Comments
     
by: steven ward from: jackson, tn
May 21, 2014 4:45 PM
Agree with the spirit of this article but has someone missed some figures? 1 standard inch is 25.4 mm. If the sea were to rise .43 mm, this would convert to .43/25.4 or 0.017 inch. This would be about the equivalent of 1/64 inch. Did you mean 43 mm?

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
African Media Tries to Educate Public About Ebolai
X
George Putic
August 20, 2014 8:57 PM
While the Ebola epidemic continues to claim lives in West Africa, information technology specialists, together with radio and TV reporters, are battling misinformation and prejudice about the disease - using social media to educate the public about the deadly virus. VOA’s George Putic has more.
Video

Video African Media Tries to Educate Public About Ebola

While the Ebola epidemic continues to claim lives in West Africa, information technology specialists, together with radio and TV reporters, are battling misinformation and prejudice about the disease - using social media to educate the public about the deadly virus. VOA’s George Putic has more.
Video

Video Ferguson Calls for Justice as Anger, Violence Grips Community

Violence, anger and frustration continue to grip the small St. Louis suburb of Ferguson, Missouri. Protests broke out after a white police officer fatally shot an unarmed black teenager on August 9. The case has sparked outrage around the nation and prompted the White House to send U.S. Attorney Eric Holder to the small community of just over 20,000 people. VOA’s Mary Alice Salinas has more from Ferguson.
Video

Video Beheading Of US Journalist Breeds Outrage

U.S. and British authorities have launched an investigation into an Islamic State video showing the beheading of kidnapped American journalist James Foley by a militant with a British accent. The extremist group, which posted the video on the Internet Tuesday, said the murder was revenge for U.S. airstrikes on militant positions in Iraq - and has threatened to execute another American journalist it is holding. Henry Ridgwell has more from London.
Video

Video Family Robots - The Next Big Thing?

Robots that can help us with daily chores like cooking and cleaning are a long way off, but automatons that serve as family companions may be much closer. Researchers in the United States, France, Japan and other countries are racing to build robots that can entertain and perform some simpler tasks for us. VOA’s George Putic reports.
Video

Video In Ukraine, Fear and Distrust Remain Where Fighting has Stopped

As the Ukrainian military reclaims control of eastern cities from pro-Russian separatists, residents are getting a chance to rebuild their lives. VOA's Gabe Joselow reports from the town of Kramatorsk in Donetsk province, where a sense of fear is still in the air, and distrust of the government in Kyiv still runs deep.
Video

Video Five Patients Given Experimental Ebola Drug Said to Be Improving

The World Health Organization has approved the use of experimental treatments for Ebola patients in West Africa. The Ebola outbreak there is unprecedented, the disease deadly. The number of people who have died from Ebola has surpassed 1,200. VOA's Carol Pearson reports on the ethical considerations of allowing experimental drugs to be used.
Video

Video China Targets Overseas Assets of Corrupt Officials

As China presses forward with its anti-graft effort, authorities are targeting corrupt officials who have sent family members and assets overseas. The efforts have stirred up a debate at home on exactly how many officials take that route and how likely it is they will be caught. Rebecca Valli has this report.
Video

Video Leading The Fight Against Islamic State, Kurds Question Iraqi Future

Western countries including the United States have begun arming the Kurdish Peshmerga forces in northern Iraq to aid their battle against extremist Sunni militants from the Islamic State. But there are concerns that a heavily-armed Kurdistan Regional Government, or KRG, might seek to declare independence and cause the break-up of the Iraqi state. As Henry Ridgwell reports from London, the KRG says it will only seek greater autonomy from Baghdad.
Video

Video In Rural Kenya, Pressure Builds Against Female Circumcision

In some Kenyan communities, female genital mutilation remains a rite of passage. But activists are pushing back, with education for girls and with threats of punishment those who perform the circumcision. Mohammed Yusuf looks at the practice in the rural eastern community of Tharaka-Nithi.

AppleAndroid