2018/09/22: Permafrost thawing could indeed release ancient fossil fuels in areas where they intersect.
So now, in the Arctic’s August warmth, she had come back to this isolated spot with a small research team, along with her husband and two young sons, to see what secrets Esieh Lake might yield. Was it simply a bizarre anomaly? Or was it a sign that the thawing Arctic had begun to release an ancient source of methane that could worsen climate change?
When the scientists examined samples of the gases, they found the chemical signature of a “geologic” origin. In other words, the methane venting from the lake seemed to be emerging not from the direct thawing of frozen Arctic soil, or permafrost, but rather from a reservoir of far older fossil fuels.
If that were happening all over the Arctic, Walter Anthony figured — if fossil fuels that had been buried for millennia were now being exposed to the atmosphere — the planet could be in even deeper peril.
Scientists know the permafrost contains an enormous amount of carbon — enough to catastrophically warm the planet if it were all released into the atmosphere. But they don’t know how fast it can come out and whether changes will be gradual or rapid.
the continuing growth of thermokarst lakes — many of which have already formed in the tundra — could more than double the greenhouse gas emissions coming from the Arctic’s soils by 2100. That’s despite the fact that the lakes would cover less than 6 percent of the total Arctic land surface.
2018/08/20: Nearly a quarter of the Northern Hemisphere's landmass sits above permafrost. Trapped in this frozen soil and vegetation is more than twice the carbon found in the atmosphere.
New data from two Arctic sites suggest some surface layers are no longer freezing. If that continues, greenhouse gases from permafrost could accelerate climate change.
in a region where temperatures can dip to 40 degrees below zero Fahrenheit, the Zimovs say unusually high snowfall this year worked like a blanket, trapping excess heat in the ground. They found sections 30 inches deep—soils that typically freeze before Christmas—that had stayed damp and mushy all winter. For the first time in memory, ground that insulates deep Arctic permafrost simply did not freeze in winter.
Could a thaw of permafrost begin decades sooner than many people expect in some of the Arctic's coldest, most carbon-rich regions, releasing trapped greenhouse gases that could accelerate human-caused climate change?
2018/09/12: the world needs more swamps.
wetlands are extremely efficient at pulling carbon dioxide out of the atmosphere and converting it into living plants and carbon-rich soil.
If ecosystems, particularly forests and wetlands, did not remove atmospheric carbon, concentrations of carbon dioxide from human activities would increase by 28 percent more each year.
A deadly positive feedback from melting permafrost is extremely bad news - and it will not even be noticed by most of the political class.
An international team of U.S. and German researchers found that abrupt thawing more than doubles previous estimates of permafrost-derived greenhouse warming. Even in the scenario where humans reduced their global carbon emissions, large methane releases from abrupt thawing are still likely to occur.
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It is one of the nightmare scenarios of global warming. As the temperature rises, vast areas of permafrost begin to thaw, allowing dead vegetation and the bodies of countless millions of animals to decompose. The associated release of greenhouse gases like methane and carbon dioxide adds to global warming, causing more permafrost to melt in a vicious upward spiral. Now a new scientific paper has found the frozen wastes of places like Siberia and Canada are much more susceptible to warming than previously thought.
Plenty of studies have shown that the Arctic is warming and that the ice caps are melting, but how does it compare to the past, and how serious is it?
Scientists are warning that rising emissions of methane in the Arctic waters could cost the world trillions of dollars.
Permafrost zones occupy nearly a quarter of the exposed land area of the Northern Hemisphere. NASA's Carbon in Arctic Reservoirs Vulnerability Experiment is probing deep into the frozen lands above the Arctic Circle in Alaska to measure emissions of the greenhouse gases carbon dioxide and methane from thawing permafrost -- signals that may hold a key to Earth's climate future.
The climate emergency requires actions at emergency speed for a rapid transition to a post-carbon, safe-climate future.
While the nerd herd was busy declaring the threat posed by gigantic new plumes of methane from the Arctic Ocean to be a non-starter, we all managed to miss the real methane menace, highlighted by c