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Arctic Methane Venting

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Sat, 2014-02-22 07:57 — mdmcdonald

Methane venting in the Arctic appears to have dramatically increased between February 2013 and February 2014.  This appears to have been created by rising sea water temperatures that have changed the behavior of the Gulf Stream and Jet Stream.  There is a concern that these phenomena will create rapid irreversible changes in the atmosphere and biosphere.  If the current trend continues, the human condition globally may be dramatically changed to negative in a matter of years to decades.

 

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Scientists Shocked by Arctic Permafrost Thawing 70 Years Sooner than Predicted

Wed, 2019-06-19 09:20 — Kathy Gilbeaux

           

A cemetery sitting on melting permafrost tundra at the village of Quinhagak on the Yukon delta in Alaska. The scientists’ findings offer a further sign of a climate emergency. Photograph: Mark Ralston/AFP/Getty Images

CLICK HERE - STUDY - Threshold sensitivity of shallow Arctic lakes and sublake permafrost to changing winter climate

theguardian.com - reuters - Matthew Green - June 18, 2019

Permafrost at outposts in the Canadian Arctic is thawing 70 years earlier than predicted, an expedition has discovered, in the latest sign that the global climate crisis is accelerating even faster than scientists had feared.

A team from the University of Alaska Fairbanks said they were astounded by how quickly a succession of unusually hot summers had destabilised the upper layers of giant subterranean ice blocks that had been frozen solid for millennia.

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Well, At Least One Catastrophic Climate Scenario Is Looking Less Likely

Sun, 2018-01-21 11:13 — Kathy Gilbeaux

           

An aggregation of methane ice worms seen on a methane hydrate in the Gulf of Mexico. Image: NOAA

CLICK HERE - STUDY - Limited contribution of ancient methane to surface waters of the U.S. Beaufort Sea shelf

earther.com - by Maddie Stone - January 18, 2018

There’s been loads of media hype regarding the Arctic “methane bomb,” an idea that rising temperatures could cause a pulse of ancient methane, locked in permafrost and frozen hydrates on the ocean floor, to escape to the atmosphere, triggering catastrophic global warming. Well, we have some positive news for you: a new study finds little evidence to support this scenario playing out in at least one fast-warming part of the world . . .

 . . . “Our data suggest that even if increasing amounts of methane are released from degrading hydrates as climate change proceeds, catastrophic emission to the atmosphere is not an inherent outcome,” lead study author Katy Sparrow of the University of Rochester said in a statement.

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Danger of Methane Explosions on Yamal Peninsula, Scientists Warn

Wed, 2015-09-23 22:22 — Kathy Gilbeaux

      

Scientists from the respected Trofimuk Institute of Petroleum Geology and Geophysics insist the process by which a series of craters formed was caused by the melting of gas hydrates and the emission of methane. Picture: Vladimir Olenchenko/Trofimuk Institute of Petroleum Geology and Geophysics

More craters expected to form due to such eruptions as permafrost melts - and they ARE caused by global warming releasing methane gas.

siberiantimes.com - by Anna Liesowska - September 22, 2015

A new expedition to one of the mysterious Siberian giant holes found in recent years has concluded that it is a warning sign of a deadly threat to northern regions as the climate warms. . . .

. . . A pingo believed to be poised to explode 'at any moment' is now being constantly monitored by a Russian space satellite in an attempt to catch the moment when the eruption occurs. . . .

. . . The scientists also warn of a dire threat to both towns and cities in the extreme north, and natural gas exploration facilities and associated pipelines.

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Steven Chu, Secretary of the Dept of Energy on Melting Permafrost and Methane Hydrate Releases

Wed, 2014-02-26 18:41 — Kathy Gilbeaux

Nobel Physicist and US Energy Secretary Steven Chu describes the potential global warming feedback from melting permafrost and methane.

https://www.youtube.com/watch?v=oHqKxWvcBdg&list=PLF48ACB853C81076A

November 30, 2010

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Arctic Seafloor Methane Releases Double Previous Estimates

Tue, 2014-02-25 19:05 — Kathy Gilbeaux

      

Methane burns as it escapes through a hole in the ice in a lagoon above the East Siberian Arctic Shelf. 
Credit: Natalia Shakhova
 
 

sciencedaily.com - University of Alaska Fairbanks - November 25, 2013

The seafloor off the coast of Northern Siberia is releasing more than twice the amount of methane as previously estimated, according to new research results published in the Nov. 24 edition of the journal Nature Geoscience.

The East Siberian Arctic Shelf is venting at least 17 teragrams of the methane into the atmosphere each year. . .

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High Methane Levels Over the Arctic Ocean

Sun, 2014-02-23 00:39 — Kathy Gilbeaux

                                             (CLICK ON POSTER IMAGE BELOW TO ENLARGE)

       

submitted by Tim Siftar

arctic-news.blogspot.com - February 19, 2014

High methane concentrations have persistently shown up over the Arctic Ocean since October 1, 2013.

The danger is that methane will further warm up the air over the Arctic, causing further weakening of the Jet Stream and further extreme weather events, particularly extreme warming of water all the way along the path of the Gulf Stream from the Atlantic Ocean into the Arctic Ocean, in turn triggering further releases from hydrates at the seafloor of the Arctic Ocean and escalating into runaway global warming.

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Arctic Methane Time Bomb Could Have Huge Economic Costs

Mon, 2013-07-29 11:15 — Kathy Gilbeaux

      

Increasing temperatures in the Arctic region are reducing sea ice cover and increasing the possibility of methane leaching from the sea bed

bbc.co.uk - by Matt McGrath - July 24, 2013

Scientists say that the release of large amounts of methane from thawing permafrost in the Arctic could have huge economic impacts for the world.

The researchers estimate that the climate effects of the release of this gas could cost $60 trillion (£39 trillion), roughly the size of the global economy in 2012.

The impacts are most likely to be felt in developing countries they say.

The research has been published in the journal Nature.

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RESEARCH - NATURE - Climate science: Vast costs of Arctic change

Climate science: Vast costs of Arctic change (3 page .PDF file)

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NOAA Report - State of the Climate in 2011

Tue, 2012-07-10 20:48 — Kathy Gilbeaux

noaa.gov - July 10, 2012

Back-to-back La Niñas cooled globe and influenced extreme weather in 2011

New NOAA-led report examines climate conditions experienced around the world

Worldwide, 2011 was the coolest year on record since 2008, yet temperatures remained above the 30 year average, according to the 2011 State of the Climate report released online today by NOAA. The peer-reviewed report, issued in coordination with the American Meteorological Society (AMS), was compiled by 378 scientists from 48 countries around the world. It provides a detailed update on global climate indicators, notable weather events and other data collected by environmental monitoring stations and instruments on land, sea, ice and sky.

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Arctic Melt Releasing Ancient Methane

Tue, 2012-05-22 21:58 — Kathy Gilbeaux

Many of the sites were bubbling methane that has been stored for millennia

BBC News - by Richard Black - May 20, 2012

Scientists have identified thousands of sites in the Arctic where methane that has been stored for many millennia is bubbling into the atmosphere.

The methane has been trapped by ice, but is able to escape as the ice melts.

Writing in the journal Nature Geoscience, the researchers say this ancient gas could have a significant impact on climate change.

Methane is the second most important greenhouse gas after CO2 and levels are rising after a few years of stability.

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Nature Geoscience - Geologic methane seeps along boundaries of Arctic permafrost thaw and melting glaciers

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