News / Science & Technology

Arctic Sea-Ice Volume Continues to Decline

Sea ice floats within Arctic National Wildlife Refuge, Alaska, undated handout photo from U.S. Fish and Wildlife Service.
Sea ice floats within Arctic National Wildlife Refuge, Alaska, undated handout photo from U.S. Fish and Wildlife Service.

Related Articles

Experts Sure Global Warming Manmade, But Predictions Elusive

Report says pinpointing local impacts in coming decades is harder than anticipated

Audio Slideshow Antarctica Shows Unprecedented Ecological Change

Researchers discover increased vegetation growth rates on northwest coast of Alexander Island on the Antarctic Peninsula

Extreme Weather Linked to Climate Change

Report finds human-caused change was contributing factor to about half of the extreme events studied
VOA News
The thickness of Arctic sea ice continues to decline, according to the European Space Agency (ESA)

The conclusion is based on three consecutive years of measurements by ESA’s CryoSat satellite mission. Scientists often measure another factor, sea-ice extent, but ice thickness, the agency says, is a “more accurate” measure of the changes taking place at the top of the world.

Professor Andrew Shephers of the University of Leeds in England told an audience at the Living Planet Symposium in Edinburgh, Scotland Wednesday that CryoSat “continues to provide clear evidence of diminishing Arctic sea ice.”

“From the satellite’s measurements, we can see that some parts of the ice pack ice have thinned more rapidly than others, but there has been a decrease in the volume of winter and summer ice over the past three years”, he said. “The volume of the sea ice at the end of last winter was less than 15,000 cubic kilometers, which is lower than any other year going into summer and indicates less winter growth than usual.”

While it seems unlikely that a record minimum of sea-ice extent will be set this September, the thinner ice at the start of summer could mean that the actual volume of ice may reach a new low, according to ESA.

“Readings from CryoSat in October, when the ice starts to refreeze, will confirm this either way,” said Rachel Tilling, doctoral student at University College London, who is working with the CryoSat data.

CryoSat is also delivering important results on land ice formation. Recently, it provided evidence of a huge flood under the Antarctic ice sheet. New measurements combined with older data from NASA’s ICESat mapped a large crater that formed as the overlying ice sank to fill the gap left by lake water that drained away.

The map revealed that about six cubic kilometers of water had escaped from under the ice, probably straight into the ocean, between 2007 and 2008.

CryoSat is expected to continue providing data until 2017.

Watch an animation showing the variations in ice thickness over time:

You May Like

US Border Patrol Union Accused of Taking Sides on Immigration

Report alleges agents leaking info to immigration opponents, appearing at their private events; Center for Immigration Studies director defends agents' actions More

Video Blind Somali Journalist Defies Odds in Mogadishu

Reporting from Somali capital for past decade, Abdifatah Hassan Kalgacal has been working at one of Mogadishu's leading radio stations covering parliament More

Video Rights Monitor: Hate Groups' Use of Internet to Inflame, Recruit Growing

Wiesenthal Center's Abraham Cooper says extremists have become skilled at celebrating violence, ideology on Web More

This forum has been closed.
Comment Sorting
Comments
     
by: Honeybee Blaze Frolics from: Pittsburgh Pennsylvania
September 17, 2013 7:26 PM
Arctic sea ice shrank to a record low in 2012, and second place was in 2007. http://clmtr.lt/cb/xqh0bWP check out climate reality project dot org and learn more about CO 2 emissions and the dangers of air, land, water pollution! I just turn 53 years old and I never dreamed in my life-time I would witness such drastic global climate changes...but feel that after the nuclear accident in 1986 Chernobyl had played a role in the catastrophic side affects of nuclear meltdown!

by: drLenin from: USA
September 17, 2013 5:04 PM
If the pace of sea ice loss keeps up, the Arctic could be nearly ice-free in summer in just a few decades. http://clmtr.lt/cb/xqh0cze

by: Bruce from: Canada
September 16, 2013 2:10 PM
Antarctic Sea Ice just set an all-time record for most ice.

by: ReduceGHGs from: Oregon
September 13, 2013 11:32 AM
The biosphere is experiencing a nearly global warm up and meltdown. There's no credible doubt, we are the cause. Changing the ways we generate and use energy is the only rational option. Contact your reps in Congress. Insist they work harder to reduce global emissions. Our future generations are at risk.

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
Hate Groups Spread Influence Via Interneti
X
Mike O'Sullivan
June 30, 2015 8:20 PM
Hate groups of various kinds are using the Internet for propaganda and recruitment, and a Jewish human rights organization that monitors these groups, the Simon Wiesenthal Center, says their influence is growing. The messages are different, but the calls to hatred or violence are similar. VOA's Mike O’Sullivan reports.
Video

Video Hate Groups Spread Influence Via Internet

Hate groups of various kinds are using the Internet for propaganda and recruitment, and a Jewish human rights organization that monitors these groups, the Simon Wiesenthal Center, says their influence is growing. The messages are different, but the calls to hatred or violence are similar. VOA's Mike O’Sullivan reports.
Video

Video US Silica Sand Mining Surge Worries Illinois Residents, Businesses

Increased domestic U.S. oil and gas production, thanks to advances known as “fracking,” has created a boom for other industries supporting that extraction. Demand for silica sand, used in fracking, could triple over the next five years. In the Midwest state of Illinois, people living near the mines are worried about how increased silica sand mining will affect their businesses and their health. VOA’s Kane Farabaugh has more in this first of a series of reports.
Video

Video Blind Somali Journalist Defies Odds in Mogadishu

Despite improving security in the last few years, Somalia remains one of the most dangerous countries to be a journalist – even more so for someone who cannot see. Abdulaziz Billow has the story of journalist Abdifatah Hassan Kalgacal, who has been reporting from the Somali capital for the last decade despite being blind.
Video

Video Texas Defies Same-Sex Marriage Ruling

Texas state officials have criticized the US Supreme Court decision giving same-sex couples the right to marry nationwide. The attorney general of Texas says last week's decision did not overrule constitutional "rights of religious liberty," and therefore officials performing wedding services can refuse to perform them for same-sex couples if it is against their religious beliefs. Zlatica Hoke reports on the controversy.
Video

Video Syrians Flee IS Advance in Hasaka

The Syrian government said Monday it has taken back one of several districts in Hasaka overrun by Islamic State militants. But continued fighting elsewhere in the northern city has forced thousands of civilians from their homes. In this report narrated by Bill Rodgers, VOA Kurdish Service reporter Zana Omer describes the scene in Amouda, where some of the displaced are taking refuge.
Video

Video Rabbi Hits Road to Heal Jewish-Muslim Relations in France

France is on high alert after last week's terrorist attack near the city Lyon, just six months after deadly Paris shootings. The attack have added new tensions to relations between French Jews and Muslims. France’s Jewish and Muslim communities also share a common heritage, though, and as far as one French rabbi is concerned, they are destined to be friends. From the Paris suburb of La Courneuve, Lisa Bryant reports about Rabbi Michel Serfaty and his friendship bus.
Video

Video S. Korea Christians Protest Gay Rights Festival

The U.S. Supreme Court decision mandating marriage equality nationwide has energized gay rights supporters around the world. Gay rights remain a highly contentious issue in a key U.S. ally, South Korea, where police did a deft job Sunday of preventing potential clashes between Christian protesters and gay activists. Kurt Achin reports from Seoul.
Video

Video Saudi Leaks Expose ‘Checkbook Diplomacy’ In Battle With Iran

Saudi Arabia’s willingness to wield its oil money on the global diplomatic stage appears to have been laid bare, after the website WikiLeaks published tens of thousands of leaked cables from Riyadh’s Ministry of Foreign Affairs. VOA's Henry Ridgwell reports.
Video

Video Nubians in Kenya Face Land Challenges

East Africa's ethnic Nubians have a rich cultural history that dates back thousands of years, but in Kenya they are facing hardships, including the loss of lands they have lived on for generations. They say the government has reneged on its pledge to award them title deeds for the plots. VOA's Lenny Ruvaga reports.
Video

Video Military Experts Question New Russian Tank Capabilities

Russia has been showing off its new tank design – the Armata T-14. Designers claim it is 20 years ahead of current Western designs - and driving it feels like playing a computer game. But military analysts question those assertions, and warn the cost could be too heavy a burden for Russia’s struggling economy. Henry Ridgwell reports.
Video

Video In Kenya, Police Said to Shoot First, Ask Questions Later

An organization that documents torture and extrajudicial killings says Kenyan police were responsible for 1,252 shooting deaths in five cities, including Nairobi, between 2009 and 2014, representing 67 percent of all gun deaths in the areas reviewed. Gabe Joselow has more from Nairobi.
Video

Video In Syrian Crisis, Social Media Offer Small Comforts

Za’atari, a makeshift city in Jordan, may be the only Syrian refugee camp to tweet its activities, in an effort to keep donors motivated as the war in Syria intensifies and the humanitarian crisis deepens. Inside the camp, families say mobile phone applications help hold together families that are physically torn apart. VOA’s Heather Murdock reports.

VOA Blogs