siberia

Thawing Permafrost May Be “Huge Factor” in Global Warming

Stephen 1 Must Read, Global Issues and Perspectives, News, Science , , , , , , , , , ,
Siberian permafrost -- Ted Schuur
Siberian permafrost — Ted Schuur

UXBRIDGE, Canada, Feb 14 2013 (IPS)

Thawing permafrost is emitting more climate-heating carbon faster than previously realised. Scientists have now learned that when the ancient carbon locked in the ice thaws and is exposed to sunlight, it turns into carbon dioxide 40 percent faster.

“This really changes the trajectory of the debate” over when and how much carbon will be released as permafrost thaws due to ever warmer temperatures in the Arctic, says researcher Rose Cory of the University of North Carolina.

There are 13 million square kilometres of permafrost in Alaska, Canada, Siberia and parts of Europe. As previously reported by IPS, a 2011 study estimated that global warming could release enough permafrost carbon to raise global temperatures three degrees C on top of what will result from human emissions from oil, gas and coal.

Human emissions are headed for four degrees C of global heating,warned the International Energy Agency (IEA) this week. A rapid “decarbonization of electricity supply” is needed to avoid that future, the IEA said as it released a new book titled “Electricity in a Climate-Constrained World”.

“The solutions are well-known: increased energy efficiency, greater research and development of low-carbon energy production, and putting a realistic price on carbon,” the book says

Full story here

80 percent of Arctic Ice Lost Compared to 30 Years Ago

Stephen 1 Must Read, Alaska, arctic, CANADA, CLIMATE CHANGE/GLOBAL WARMING, ECOLOGY, economics, Energy, global warming, News, OCEAN, Science , , , , , , , , , , , , ,

arctic-sea-ice-min-volume-comparison-1979-2012-small

[This is my first exclusive blog post – virtually everything else on this site are my published articles. Not sure if I’ll have time to do more. Let me know what you think – Stephen ]

A new study released Feb 13 revealed that the volume of Arctic sea ice is declining rapidly. Ice volume in September 2012 had fallen 80 percent compared with the volume of ice in September 1980 according to the latest data from European Space Agency satellite, CryoSat-2. As the Arctic heats up Most of the ice loss has been in recent years. Between 2003 and 2012 the volume declined a whopping 36 percent. Summers with a sea ice-free Arctic are only a few years away, scientists now agree. This will have significant and permanent impacts on weather patterns in the Northern Hemisphere.

My previous article  Ice-Free Arctic Is “Uncharted Territory” documented last September’s one year record area decline of 18 percent. Here’s what this means:

The impacts are already being felt across the entire northern hemisphere. The loss of sea ice in recent years has been affecting weather patterns, recent research has shown. The all-important jet stream – the west-to-east winds that are the boundary between the cold Arctic and the warm mid-latitudes – is slowing down, moving north and become more erratic.

When continent-sized areas of the Arctic Ocean flip from the all-white ice to dark blue, tremendous amounts of heat are absorbed from the 24-hour summer sun. When the bitter cold Arctic winter sets in over the next few weeks, all the heat in the ocean must be released into the atmosphere before ice can form again.

The Arctic will be ice-covered in winter for decades to come but what’s fundamentally changed is that every fall, unprecedented amounts of heat and water vapour will be released into the atmosphere.

“The polar meltdown shows we’re teetering on the brink of climate change catastrophe,” said Shaye Wolf, climate science director at the Center for Biological Diversity’s Climate Law Institute.

As the sea ice declines, Arctic temperatures increase, thawing more and more permafrost, which will release more climate-heating carbon and methane. Permafrost is frozen soil, sediment and rock spanning 13 million square kilometres of the land in Alaska, Canada, Siberia and parts of Europe. It has twice the carbon that the atmosphere currently holds.

A Swedish study released Feb 17 has found a link between sea ice declines and increases in methane emissions. Methane has 40x the warming of carbon. This is may lead to an even faster meltdown of the Arctic risking the release of huge amounts of permafrost carbon and methane.

Wisdom of Elders Better Than Science or the Internet: “They Still Know How to Cook Mammoth”

Stephen 1 Must Read, Alaska, arctic, Biodiversity, CANADA, CLIMATE CHANGE/GLOBAL WARMING, Culture, ECOLOGY, ENVIRONMENT, Global Issues and Perspectives, global warming, Indigenous People, News, sustainability , , , , , , , ,

Petr Kaurgin, a Chukchi reindeer herder from Siberia. Photo: Citt Williams

by Stephen Leahy

First published at National Geographic’s NewsWatch

 “Our elders are the best source of information. Better than science or the internet,” said Petr Kaurgin, a Chukchi reindeer herder from the remote Turvaurgin nomadic tribal community in north-eastern Siberia.

Kaurgin delivered his message to climate scientists from Intergovernmental Panel on Climate Change (IPCC) and other Indigenous peoples at the closing of the Climate Change Mitigation with Local Communities and Indigenous peoples workshop here in Cairns, Australia.

“We need to listen to the wisdom of the elders. We can use everything in nature. But we must not break or destroy things, ” he said through a translator.

It was -45C when Kaurgin left his home to bring his people’s message to climate experts here in the hot, wet tropical part of Australia. The IPCC is the world authority on the science of climate change. And along with the United Nations University (UNU) organized the workshop to figure out how to incorporate Indigenous peoples’ traditional knowledge.

“When we love the land where we live only then we are happy,” he said.

Kaurgin’s people and other local Siberian communities have been experiencing the impacts of climate change such as melting permafrost for the last 20 years said Tero Mustonen, Head of the Village of Selkie in North Karelia, Finland.

For complete article see Nat Geo’s NewsWatch

Arctic Leaking Methane a Super-Potent Global Warming Gas — Reaching Feared Tipping Point?

Stephen Alaska, CLIMATE CHANGE/GLOBAL WARMING, Energy, Global Issues and Perspectives, global warming, News, OCEAN , , , ,

By Stephen Leahy

“The way we’re going right now, I’m not optimistic that we will avoid some kind of tipping point.”

— Mark Serreze, senior research scientist at the National Snow and Ice Data Centre

UXBRIDGE, Canada, Mar 5, 2010 (IPS)

The frozen cap trapping billions of tonnes of methane under the cold waters of the Arctic Ocean is leaking and venting the powerful greenhouse gas into the atmosphere, new research shows.

It is not known if this may be one of the first indicators of a feedback loop accelerating global warming.

Researchers estimate that eight million tonnes in annual methane emissions are being released from the shallow East Siberian Arctic Shelf, which is equivalent to all the methane released from the world’s oceans, covering 71 percent of the planet.

On a global scale of methane emissions from the land-based sources – animals, rice paddies, rotting vegetation – the newly measured emissions from the Siberian seabed are less than two percent.

“That’s still very significant,” Natalia Shakhova, a researcher at the University of Alaska in Fairbanks, told IPS. “Before, it was assumed that this region had zero emissions.”

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Methane concentrations measured over the oceans are currently about 0.6 to 0.7 parts per million (ppm), but they are now 1.85 in the Arctic Ocean generally, and between 2.6 and 8.2 ppm in the East Siberian Arctic Shelf, an area roughly two million square kilometres in size, said Shakhova.

Shakhova, and her University of Alaska colleague Igor Semiletov, led eight international expeditions to one of the world’s most remote and desolate regions and published their results in the Mar. 5 edition of the journal Science. Continue reading →