The u.s. has been emitting a lot more methane than we thought, says epa – the washington post sgas belfast


The Environmental Protection Agency has released a major upward revision to its wikipedia electricity generation estimates of total emissions of methane, a hard-hitting if short-lived greenhouse gas, in an annual inventory that the agency submits to the United Nations. The revisions will further up the stakes in a political battle over regulations that the agency is preparing to issue that could affect operations at thousands of oil and gas gas smoker recipes wells.

The agency revised upward total methane emissions in the U.S. for the year 2013 from 636.3 million metric tons to 721.5 million metric tons of carbon dioxide equivalents, driven in significant part by increased estimates gas national average 2013 of emissions from oil and gas operations. And the overall methane emissions number is still higher for 2014, the most recent year in the gas monkey monster truck inventory, at 730.8 million metric tons.

“What EPA essentially is doing is restating the numbers using the better data, that has been when was gas 99 cents in california collected from the field,” said Mark Brownstein, who heads the oil and gas program at the Environmental Defense Fund, which has focused gas 4 less manhattan ks heavily on the methane issue in recent years. “What has long been thought is that emissions in the field are higher than what had been historically reported in EPA’s emissions inventory, and now, when you use that better data, it is higher.”

Methane totals are reported in units of “carbon dioxide equivalents” so that scientists can better make an apples-to-apples comparison between different electricity and circuits physics greenhouse gases. Methane is known to have a much larger warming effect than carbon dioxide, but only over a short time period, whereas carbon dioxide has a far longer power usage estimator time of residence in the atmosphere.

“The big picture is that, yes, EPA’s estimate of methane emissions has increased, most likely due to them receiving better data,” said Kristin Igusky, an expert on methane with the World Resources k electric company duplicate bill Institute. “Because methane emissions are greater than we previously thought, it’s that much more important that policies are put into place to bring save electricity pictures emissions down in this category,” she said.

It’s important to emphasize that the latest upward revisions only account for a relatively small fraction of total U.S. greenhouse gas emissions, which were predominantly gas zauberberg in the form of carbon dioxide, rather than methane. Overall, emissions increased about 1 percent from the year 2013 to 2014, the last year in the newest inventory, according to the EPA.

Yet the upward methane revisions were still substantial when considered as a percentage. For instance electricity formulas grade 9, an analysis provided by the Environmental Defense Fund (EDF) found that if you compare electricity in the body oil and gas emissions for the year 2014 in the EPA’s latest inventory, with emissions for 2013 in the last year’s inventory, then there is a 34 percent increase — and the group said that 31 percent of that is “solely due to methodological year 6 electricity assessment change.”

Concerns about methane emissions from leaking oil and gas operations and systems has led to more and more emphasis on controlling these sources, fast, to lessen warming in the short electricity joules term. President Obama and Canadian premier Justin Trudeau just jointly announced plans to seek a cut in oil and gas methane emissions by 40 or 45 percent below 2012 levels by 2025.