15 Updates

Siberian thaw likely to worsen global warming

Feb 22 2013, 3:40am CST | by

London, Feb 22 (IANS) A rise of 1.5 degrees Celsius in mercury is likely to melt the permanently frozen ground over a large chunk of Siberia, possibly releasing gigatonnes of carbon from soils that could aggravate global warming, says a study.

London, Feb 22 — A rise of 1.5 degrees Celsius in mercury is likely to melt the permanently frozen ground over a large chunk of Siberia, possibly releasing gigatonnes of carbon from soils that could...

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Update
15

1 hour ago

Obama plans major push on global warming

Source: Straits Times  |   Jun 19 2013, 10:51pm CDT

US President Barack Obama speaks in front of the Brandenburg Gate at Pariser Platz in Berlin, Germany, on Wednesday June 19, 2013. Mr Obama is planning a major push against the pollution blamed for global warming in an ...

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Update
14

4 hours ago

Small global warming rise would have 'alarming' impact - World Bank

Source: Business Spectator   |   Jun 19 2013, 6:59pm CDT

Alan Kohler is one of Australia’s most experienced commentators and journalists. Alan is the founder of Eureka Report, Australia’s most successful investment newsletter, and Business Spectator, a 24-hour free business news and commentary website. He also ...

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Update
13


Quote:
"For the sake of future generations, our generation must move toward a global compact to confront a changing climate before it is too late"


Source: KREM.com

 
Update
11

5 hours ago

Obama plans major push on global warming

Source: KTVB.com  |   Jun 19 2013, 6:35pm CDT

WASHINGTON (AP) — President Barack Obama is planning a major push against the pollution blamed for global warming in an effort to follow promises he made at the start of his second term. "This is the global threat of our time," Obama said i ...

Continue reading on: KTVB.com  More like this

 
Update
9

5 hours ago

Obama to tap executive powers to curb emissions blamed for global warming

Source: Minneapolis Star Tribune  |   Jun 19 2013, 6:20pm CDT

WASHINGTON — President Barack Obama is planning a major push using executive powers to tackle the pollution blamed for global warming in an effort to make good on promises he made at the start of his second term. "We know we have to do more — and we will ...

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Update
8

6 hours ago

Obama making plans to tackle global warming

Source: KATV  |   Jun 19 2013, 5:23pm CDT

The U.S. Naval Academy has charged three Navy football players with sexually assaulting a female midshipman more than a year ago.More >> The U.S. Naval Academy on Wednesday charged three Navy football players with sexually assaul ...

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Update
7

6 hours ago

Obama making plans to tackle global warming

Source: Albequerque Express  |   Jun 19 2013, 5:12pm CDT

WASHINGTON -; President Barack Obama is planning a major push using executive powers to tackle the pollution blamed for global warming in an effort to make good on promises he made at the start of his second term. No comments yet for this story L ...

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Update
6

6 hours ago

Obama making plans to tackle global warming

Source: WIS  |   Jun 19 2013, 5:11pm CDT

RICHLAND, SC (WIS) - The South Carolina Highway Patrol says a 24-year-old man is facing multiple charges, including felony DUI, following a fatal crash involving a child. Troopers say it happened on TuesdayMore >> Bond was d ...

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Update
5

6 hours ago

Obama making plans to tackle global warming

Source: KLAS - Las Vegas Now  |   Jun 19 2013, 5:03pm CDT

An influential Republican senator says the Internal Revenue Service is about to pay $70 million in employee bonuses despite an Obama administration directive to cancel discretionary bonuses because of automatic...More>> Already reeling from a pair of ...

Continue reading on: KLAS - Las Vegas Now  More like this

 
Update
4

6 hours ago

‘Consensus” Bending: From ‘Warming’ To ‘Stalling’ To Global ‘Cooling’

Source: Climate Depot  |   Jun 19 2013, 5:00pm CDT

'The global temperature datasets reveal that over the pastdecade+, world temps have plateaued and now may be slipping into a cooling phase. This has taken place in spite of the huge amount of CO2 emissions added t ...

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Update
3

7 hours ago

Obama making plans to tackle global warming

Source: News 10 WTEN Albany  |   Jun 19 2013, 4:33pm CDT

By saying he intends to bargain with Russia over new reductions in nuclear weapons rather than make cuts on his own President Barack Obama is asking for cooperation from a former Cold War foe in no mood to agree.More >> By saying he intends to bargain wi ...

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Update
2

7 hours ago

Walker to speak at Chicago-based conservative think tank focused on global warming

Source: Minneapolis Star Tribune  |   Jun 19 2013, 4:30pm CDT

MADISON, Wis. — Wisconsin Gov. Scott Walker is scheduled to speak at a prominent think tank that denies the existence of man-made global warming. Walker was scheduled to appear at a $250 dinner and reception Wednesday night at the Chicago-based Heart ...

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Update
1

7 hours ago

Obama Making Plans To Tackle Global Warming

Source: NPR  |   Jun 19 2013, 4:18pm CDT

WASHINGTON (AP) — President Barack Obama is planning a major push using executive powers to tackle the pollution blamed for global warming in an effort to make good on promises he made at the start of his second term. Obama's energy and ...

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16 weeks ago

Siberian thaw likely to worsen global warming

Feb 22 2013, 3:40am CST | by

London, Feb 22 (IANS) A rise of 1.5 degrees Celsius in mercury is likely to melt the permanently frozen ground over a large chunk of Siberia, possibly releasing gigatonnes of carbon from soils that could aggravate global warming, says a study.

London, Feb 22 — A rise of 1.5 degrees Celsius in mercury is likely to melt the permanently frozen ground over a large chunk of Siberia, possibly releasing gigatonnes of carbon from soils that could aggravate global warming, says a study.

"As permafrost covers 24 percent of the land surface of the northern hemisphere, significant thawing could affect vast areas and release gigatonnes of carbon," said Anton Vaks from the Oxford department of earth sciences, who led the research.

"For instance, natural gas facilities in the region, as well as power lines, roads, railways and buildings are all built on permafrost and are vulnerable to thawing. Such a thaw could damage this infrastructure with obvious economic implications," adds Vaks, the journal Science Express reports.

The data comes from a team of researchers from Britain, Russia, Mongolia and Switzerland studying stalactites and stalagmites from caves located along the "permafrost frontier", where ground begins to be permanently frozen in a layer tens to hundreds of metres thick, according to an Oxford statement.

"The stalactites and stalagmites from these caves are a way of looking back in time to see the effects of warm periods similar to our modern climate," says Vaks.

Because stalactites and stalagmites only grow when liquid rainwater and snow melt drips into the caves, these formations record 500,000 years of changing permafrost conditions, including warmer periods similar to the climate today.

Records from a particularly warm period around 400,000 years ago suggest that global warming of 1.5 degrees Celsius compared to the present is enough to cause substantial thawing of permafrost far north from its present-day southern limit.

The team used radiometric dating techniques to date the growth of cave formations (stalactites and stalagmites).

Data from the Ledyanaya Lenskaya Cave - near Russia's Lensk town - in the coldest region showed that the only period when stalactite growth took place occurred about 400,000 years ago, during a period with a global temperature 1.5 degrees higher than today.

IANS

Source: IANS

 

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<a href="/latest_stories/all/all/8" rel="author">Luigi Lugmayr</a>
Luigi is the founding Chief Editor of I4U News and brings over 15 years experience in the technology field to the ever evolving and exciting world of gadgets. He started I4U News back in 2000 and evolved it into vibrant technology magazine.
Luigi can be contacted directly at ml@i4u.com. Luigi posts regularly on LuigiMe.com about his experience running I4U.

 

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