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Arctic storms speed up release of methane plumes

2013-11-27 19:17:00| Climate Ark Climate Change & Global Warming Newsfeed

New Scientist: THE ocean is being stirred up like a fizzy drink. A stormier Arctic could fast-track methane gas into the atmosphere, potentially accelerating global warming. Working off the east Siberian coast, Natalia Shakhova of the University of Alaska in Fairbanks and colleagues drilled into the bed of the Laptev Sea a hotspot of methane emissions and used sonar to analyse gas bubbles in the water. They found the permafrost that usually sat beneath the seabed had thawed, allowing 500 kilograms of methane...

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Bombshell Study Finds Methane Emissions From Natural Gas Production Far Higher Than EPA Estimates

2013-11-27 14:19:00| Climate Ark Climate Change & Global Warming Newsfeed

AlterNet: A major new study blows up the whole notion of natural gas as a short-term bridge fuel to a carbon-free economy. Natural gas is mostly methane (CH4), a potent heat-trapping gas. If, as now seems likely, natural gas production systems leak 2.7% (or more), then gas-fired power loses its near-term advantage over coal and becomes more of a gangplank than a bridge. Worse, without a carbon price, some gas displaces renewable energy, further undercutting any benefit it might have had. Fifteen scientists...

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U.S. May Be Producing 50% More Methane Than EPA Thinks

2013-11-27 06:00:00| Climate Ark Climate Change & Global Warming Newsfeed

National Public Radio: Methane is the source of the gas we burn in stoves. You can also use it to make plastics, antifreeze or fertilizer. It comes out of underground deposits, but it also seeps up from swamps, landfills, even the stomachs of cows. And while methane is valuable, a lot of it gets up into the atmosphere, where it becomes a very damaging greenhouse gas. Scientists have been trying to find out, with varying success, exactly how much of this climate-warming gas gets into the atmosphere. A study published...

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US Methane Levels Higher Than Thought

2013-11-26 18:06:00| Climate Ark Climate Change & Global Warming Newsfeed

LiveScience: Thanks in large part to gas wells and cow farms, the United States is spewing 50 percent more methane, a potent greenhouse gas, than previous estimates have measured, according to a new study. For the study, published Monday (Nov. 25) in the journal Proceedings of the National Academy of Sciences, researchers from universities and government labs fanned out across the United States in 2007 and 2008 and measured levels of methane gas in the air. Though methane breaks down in the atmosphere after...

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US methane emissions exceed estimates, study finds

2013-11-26 14:37:08| Climate Ark Climate Change & Global Warming Newsfeed

New York Times: Emissions of the greenhouse gas methane due to human activity were roughly 1.5 times greater in the United States in the middle of the last decade than prevailing estimates, according to a new analysis by 15 climate scientists published Monday in The Proceedings of the National Academy of Sciences. The analysis also said that methane discharges in Texas and Oklahoma, where oil and gas production was concentrated at the time, were 2.7 times greater than conventional estimates. Emissions from oil...

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