carbon dioxide

Wed, 2014-04-16 13:09Sharon Kelly
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Study Finds Methane Leaks 1,000 Times EPA Estimates During Marcellus Drilling

This week, a United Nations panel on climate change issued one of its most urgent warnings to date, explaining that unless major changes to greenhouse gas emissions are made within the next few years, it will become extraordinarily difficult to ward off the worst impacts of climate change.

We cannot afford to lose another decade,” Ottmar Edenhofer, a German economist and co-chairman of the committee, told The New York Times

With the time to cut emissions running out, the Obama administration has seized upon the hope that greenhouse gasses can be cut dramatically by switching from coal to natural gas, because gas gives off half as much carbon dioxide as coal when it’s burned. Indeed, when the EPA published its annual greenhouse gas inventory this Tuesday, it credited a switch from coal to natural gas with helping to cut carbon emissions nationwide.

But a new scientific paper, also published Tuesday in the prestigious peer-reviewed journal Proceedings of the Natural Academy of Sciences, further upends the notion that the current shale gas drilling rush is truly helping the U.S. cut its total greenhouse gas emissions.

In fact, the evidence suggests, the Obama administration has understated the full climate impacts of natural gas, focusing too much on only carbon dioxide and failing to take into account another key greenhouse gas: methane.

The paper, the first to directly measure methane plumes above natural gas drilling sites in Pennsylvania’s Marcellus shale, recorded methane leaks far more powerful than EPA estimates. Methane is especially important because its global warming effects are at their strongest during the first 20 years after it enters the atmosphere — in other words, during the small window of time identified as crucial by the U.N.’s climate panel.

Mon, 2014-01-13 01:30Sharon Kelly
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New Carbon Rules for Power Plants A Missed Opportunity To Rein in Natural Gas Emissions, Critics Say

One of the linchpins of the Obama administration’s high-stakes plan to address climate change moved one step closer to implementation this week, as the EPA officially published proposed new carbon emissions standards for power plants, drawing fire from environmentalists who say the rules for natural gas power plants are too lenient.

The proposed rules cover both natural gas and coal-fired electrical plants, which are responsible for 40 percent of America’s carbon dioxide emissions.

The rules would make it virtually impossible for new coal-fired power plants to be built, unless carbon capture and sequestration technology is used, but sets standards that can be easily achieved by natural gas power plants without using any similar tools.

This has led to an outcry from environmental groups like the Center for Biological Diversity.

“If the EPA is serious about the climate crisis, it needs to be serious about reducing greenhouse pollution from all power plants — regardless of whether they are fueled by gas or coal,” Bill Snape, the senior counsel for the Center said in a statement. “The bottom line is that we can do better.”

The rules for coal plants are not expected to have much direct impact on new power plant construction plans—utilities planned to build very few coal plants even before the EPA proposed its rule.

But once they are finalized, the standards for new power plants will trigger a key clause of the Clean Air Act, and the EPA will next be required to create similar carbon dioxide emissions guidelines that would govern the existing 6,500 coal and natural gas power plants nationwide.

It’s important because it establishes the form that these regulations will take,” John Coequyt, of the Sierra Club’s Beyond Coal Campaign told ThinkProgress.

The EPA move is part of Mr. Obama’s overall climate strategy, which disappointed many observers who criticize its support of fracking and its underwhelming effectiveness. “The Obama administration is aiming for reductions by 2020,” Brad Plumer wrote in the Washington Post’s Wonkblog earlier this week. “But that's not nearly enough to avert a 2°C rise in temperatures, which is the broader goal.”  

Mr. Obama’s climate plan calls for a heavy reliance on natural gas, which produces roughly 50 to 60 percent as much carbon dioxide as coal when burned, to help transition away from coal. But there is strong evidence that natural gas, which is primarily composed of the powerful greenhouse gas methane, may be worse for the climate than coal. The Obama climate plan, in that case, would represent a move from the frying pan into the fire.

Sun, 2013-10-06 21:16Steve Horn
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NY Times' Joe Nocera Overlooks Key Flaws in EDF Fracking Climate Change Study

Yesterday, New York Times' columnist Joe Nocera weighed in on the study by Environmental Defense Fund (EDF) and University of Texas-Austin (UT-Austin) on the climate change impacts of hydraulic fracturing (“fracking”)DeSmogBlog got a special mention in Nocera's op-ed titled, “A Fracking Rorschach Test.” 

Nocera praised UT-Austin Professor David Allen and colleagues for obtaining what he claimed was “unassailable data” on fugitive methane emissions and fracking's climate change impact potential. 

“The reason the Environmental Defense Fund wanted this study done is precisely so that unassailable data, rather than mere estimates, could become part of the debate over fracking,” wrote Nocera. “You can’t have sound regulation without good data.”

Missing from Nocera's praise: new findings by the Intergovernment Panel on Climate Change in their latest comprehensive review of the climate crisis.

IPCC revealed “over a 20-year time frame, methane has a global warming potential 86 [times the amount of] CO2, up from its previous estimate of 72 [times],” as explained by Climate Progress' Joe Romm.

In juxtaposition, Nocera dismissed DeSmog's criticisms of the study - one we referred to as “frackademia.” 

Simplifying the crux of my 3,000-word DeSmog critique and the 800-word follow-up as “because the nine companies involved had both cooperated and helped pay for it,” Nocera then rhetorically asks “why a study that necessitated industry cooperation and money is inherently less valid than a study produced by scientists who are openly opposed to fracking was left unanswered.”

Tue, 2013-08-13 07:00Sharon Kelly
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Greenwashing Concerns Mount as Evidence of Fracking's Climate Impact Grows

Several years ago, Utah public health officials realized they had a big problem on their hands – one with national implications as other states were racing to increase oil and gas drilling. Smog levels in the state’s rural Uintah basin were rivaling those found in Los Angeles or Houston on their worst days.

The culprit, an EPA report concluded earlier this year: oil and gas operations. The industry was responsible for roughly 99 percent of the volatile organic compounds found in the basin, which mixed under sunlight with nitrogen oxides – at least 57% of which also came from oil and gas development – to form the choking smog, so thick that the nearby Salt Lake City airport was forced to divert flights when the smog was at its worst.

But the haze over the Uintah isn’t the most dangerous air pollutant coming from the oil and gas fields in the valley.

A string of studies by the National Oceanic and Atmospheric Administration show that the core ingredient in natural gas, methane, is leaking at rates far higher than previously suspected.  This methane has climate change impacts that, on a pound-for-pound basis, will be far more powerful over the next two decades than the carbon dioxide emissions that have been the focus of most climate change discussions.

The smog problem is especially pronounced in Utah. But a growing body of research nationwide suggests that methane is leaking from the natural gas industry at levels far higher than previously known.

In Washington D.C., pressure is mounting to ignore these methane leaks. The oil and gas industry says there is no time to waste. We must proceed immediately with the “all-of-the-above” national energy strategy they say, code for “drill baby drill”. This pressure is coming not only from the natural gas industry itself, but also from a surprising ally: the Environmental Defense Fund, which has supported natural gas development as a “bridge” from coal to renewables.

This position has drawn renewed accusations that the EDF is “greenwashing” for the natural gas industry.

Fri, 2013-07-26 09:00Laurel Whitney
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New Nature Study Calls Melting Underwater Arctic Permafrost An "Economic Time Bomb"

Three academics walk into a bar.

After what must have been the worst happy hour ever, they emerge having discovered that melting oceanic permafrost could come with a hefty $60 trillion dollar price tag, slightly less than the entire world economy.

We calculate that the costs of a melting Arctic will be huge, because the region is pivotal to the functioning of Earth systems such as oceans and the climate. The release of methane from thawing permafrost beneath the East Siberian Sea, off northern Russia, alone comes with an average global price tag of $60 trillion in the absence of mitigating action — a figure comparable to the size of the world economy in 2012 (about $70 trillion). The total cost of Arctic change will be much higher.

Penned in a recent issue of Nature, Gail Whitman (Sustainability professor at Erasmus University Netherlands), Chris Hope (Policy modeler, University of Cambridge) and Peter Wadhams (Ocean physics, University of Cambridge) set out to calculate the economic consequences of an ice-free Arctic, which some have estimated could happen as early as 2020.

Their main concern followed the melting of underwater permafrost - called methane clathrates - in which natural methane gas beneath the ocean is trapped in frozen beds of ice. Normally, the cold temperatures of ocean water and high pressure of ocean sitting atop the clathrates keep them in place. But with the Arctic ice cap quickly melting, the warming may penetrate farther toward the ocean floor and release this 50 Gt reservoir of methane.

Like stinky bubbles emanating from their Arctic bathtub, methane, a much more powerful greenhouse gas than CO2 with about 20x the warming capability, could either be released gradually over time, or in one fell swoop, accelerating atmospheric warming.

Fri, 2012-06-01 21:00Laurel Whitney
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400 PPM Carbon Dioxide Concentrations Breach The Arctic

There's a saying that trouble comes in threes. Earlier this week, the International Energy Administration announced that emissions reached a record high last year, increasing by 1 Gt worldwide. At the Bonn climate talks, experts have warned that the window to curb a global temperature rise of more than 2 degrees is swiftly drawing to a close.

To cap it off, NOAA released the news that carbon dioxide levels have reached a new milestone this spring, tipping the scales over 400 ppm, a concentration the world hasn't seen in the last 800,000 years.

Scientists are seeing these high concentrations at their northernmost stations in the Arctic. Remote sites measure the gas in Alaska, Canada, Iceland, Finland, Norway, and also an island in the North Pacific, Mauna Loa, which has been recording ambient CO2 concentrations since 1959 (and produced the now-famous Keeling curve).

The global average is still around 395 ppm, but the Arctic is seen as an important indicator for global conditions to come, since it is an ecosystem that is much more sensitive to changing conditions.

The northern sites in our monitoring network tell us what is coming soon to the globe as a whole,” said Pieter Tans, an atmospheric scientist with NOAA’s Earth System Research Laboratory (ESRL) in Boulder, Colo. “We will likely see global average CO2 concentrations reach 400 ppm about 2016.”

Sun, 2012-01-29 10:53Carol Linnitt
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The Cornell Team Redux: Shale Gas a Disaster for Climate

Unconventional gas offers no advantage over other fossil fuels when considering its impact on the climate, according to a new report from a group of researchers at Cornell University. The Cornell Team, who made waves in the shale debate with groundbreaking research on methane leakage in gas production are challenging the gas industry’s claim that gas offers a clean, environmentally-friendly alternative to conventional fossil fuels. The team, comprised of Robert Howarth, Anthony Ingraffea and Renee Santoro, recently released a companion study to their contentious April 2011 report, continuing to reveal that shale gas is inadequate as a bridge fuel and may be worse for climate change in the long run than coal.

The team’s new study analyzes the combined effect of methane and carbon dioxide in the atmosphere over a 20-year timeframe. Investigating the impact of emissions from both electricity generation, which accounts for about 30 percent of US gas usage, and heat generation, which accounts for the majority of the country’s gas usage, the report emphasizes the enormous projected role of unconventional gas – and its associated emissions – in America’s energy future. 

Sat, 2009-09-26 07:05Peter Sinclair
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Climate Denial Crock of the Week/All Wet on Sea level remixed

Sea level rise. It’s been the subject of myth, legend and pop culture for millenia. It is going to be one of the major destructive effects of global climate change. So naturally, its something that makes deniers do and say crazy things.

Here’s the updated, remixed video on a misunderstood topic.

Mon, 2009-09-07 08:38Peter Sinclair
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Climate Denial Crock of the Week/1998 Revisited

One of the enduring myths of climate denialism is that global warming stopped sometime in the last decade. I see it in the blaring headlines of pseudoscience websites, in comments on my videos, even some of our most “distinguished” journalists have been taken in.

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