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Methane Emissions In The US Reportedly Exceed EPA Estimates

2013-11-26 13:17:00| Climate Ark Climate Change & Global Warming Newsfeed

RedOrbit: The US Environmental Protection Agency (EPA) could be underestimating American methane emission levels by as much as 50 percent, according to new research appearing in this weeks early online edition of the journal Proceedings of the National Academy of Sciences. Carnegie Institution researchers, along with colleagues from the Lawrence Berkeley National Laboratory (Berkeley Lab), Harvard University and other institutions, used atmospheric methane observations from throughout North American in...

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New study finds US anthropogenic methane emissions 1.5 times higher than previously estimated by EPA

2013-11-26 12:30:29| Green Car Congress

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Arctic Seafloor Releasing 17 Teragrams Methane Every Year, Study Finds

2013-11-26 10:32:00| Climate Ark Climate Change & Global Warming Newsfeed

Nature World: The Arctic seafloor might have a larger methane time-bomb than previously assumed. A new study has found that the East Siberian Arctic Shelf is releasing 17 teragrams of methane each year, about twice as much as previous estimates. One teragram is about 1 million tons. What's worse is that climate change might be accelerating its release. The study was conducted by researchers at the University of Alaska, Fairbanks and colleagues. Methane is the second-most prevalent greenhouse gas in the...

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Report: Methane emissions 50 percent higher than EPA estimates

2013-11-26 07:36:00| Climate Ark Climate Change & Global Warming Newsfeed

Hill: Methane emissions from oil-and-gas operations are roughly 50 percent higher than estimates reported by the Environmental Protection Agency (EPA), according to a new study. Researchers found methane emissions in the United States are nearly five times higher in the south-central region, which includes Texas, Oklahoma and Kansas. The study, conducted by scientists at Harvard University and seven other institutions, was published Monday in the Proceedings of the National Academy of Sciences. ...

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Twice as Much Methane Escaping Arctic Seafloor

2013-11-24 21:29:00| Climate Ark Climate Change & Global Warming Newsfeed

LiveScience: The Arctic methane time bomb is bigger than scientists once thought and primed to blow, according to a study published today (Nov. 24) in the journal Nature Geoscience. About 17 teragrams of methane, a potent greenhouse gas, escapes each year from a broad, shallow underwater platform called the East Siberian Arctic Shelf, said Natalia Shakova, lead study author and a biogeochemist at the University of Alaska, Fairbanks. A teragram is equal to about 1.1 million tons; the world emits about 500 million...

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