global warming

Mon, 2013-10-14 05:00Sharon Kelly
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Flaws in Environmental Defense Fund's Methane Study Draw Criticism from Scientists

Perhaps the single most consequential and controversial issue at the center of the onshore natural gas drilling boom is the question of methane leaks. Natural gas is primarily made of methane, a powerful greenhouse gas, and if enough escapes into the atmosphere, these leaks could potentially make natural gas a worse fuel for the climate than coal.

In mid-September, researchers from the University of Texas published a study that was hailed by a triumphant oil and gas industry, which claimed it definitively showed that methane leaks from fracking are minimal. Major news outlets largely fed this excitement, proclaiming that the study showed EPA had dramatically overestimated methane leaks from the drilling boom.

But as the celebrations died down and more sober and rigorous analysis of the study has begun, scientists are finding that the University of Texas study is riddled with flaws.

The backers of the report cherry-picked the oil and gas wells included in the study, selecting smaller wells that had less capacity to leak and ones that used leak controls that are not currently used at many of the nation’s wells. The authors systematically ignored more recent federal research indicating that as much as 17 percent of natural gas – more than 10 times the estimate indicated by the UT study – leaks from gas fields, and overlooked serious methodological flaws that were pointed out in similar studies dating back as far as 1996.

As scientists have raised these concerns, the Environmental Defense Fund, one backer of the study which was 90 percent funded by the oil and gas industry, have tried to tamp down some of the media excitement surrounding the result and said that their research was misrepresented.

Tue, 2013-09-24 11:53Connor Gibson
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VIDEO: Heartland CEO Confronted Over Barre Seid's Funding of IPCC Attacks

Yesterday, the Heritage Foundation hosted The Heartland Institute's CEO Joseph Bast, along with two of Heartland's contracted climate denial scientists (Willie Soon and Bob Carter), to present their new report that denies the seriousness of global warming. Greenpeace was there to ask Heartland about the report's funders, including billionaire Barre Seid, and to challenge Heartland's assertion that their work has any scientific validity (it doesn't). See the video for yourself.

Tue, 2013-09-17 10:53Connor Gibson
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Two Tweets and a Lie! Greenpeace Responds to Heartland Institute

From left: Heartland Institute president Joseph Bast, lawyer James Taylor and contracted pseudo-scientist Craig Idso.

From left: Heartland Institute president Joseph Bast, lawyer James Taylor and contracted pseudo-scientist Craig Idso. Crossposted from PolluterWatch.org

As we've told the Heartland Institute directly through Twitter, their response to our new report on climate change denial, Dealing in Doubt, contains a series of lies that are tellingly consistent with the lies we document in the report itself. Here are some, but not all, of the silliest claims Heartland made in their response to us:

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.

Wed, 2013-05-15 16:01Brendan DeMelle
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Climate Denial's Death Knell: 97 Percent of Peer-Reviewed Science Confirms Manmade Global Warming, Consensus Overwhelming

A new survey conducted by a team of volunteers at Skeptical Science has definitively confirmed the scientific consensus in climate science literature - 97 percent of peer-reviewed papers agree that global warming is happening and human activities are responsible.  

It does not get any clearer than this. It should finally put to rest the claims of climate deniers that there is a scientific debate about global warming. Of course, this bunch isn't known for being reasonable or susceptible to facts. But maybe the mainstream media outlets that have given deniers a megaphone will finally stop. 

The peer-reviewed survey, Quantifying the consensus on anthropogenic global warming in the scientific literature, was published today in the peer-reviewed Environmental Research Letters, a publication of the Institute of Physics (IOP).

The citizen science team looked at some 12,000 peer-reviewed climate science papers and found a 97% consensus that humans are causing global warming. The work expanded upon an earlier survey of the literature by Naomi Oreskes, published in 2004, as well as an informal review conducted by James Powell, published on DeSmogBlog in November 2012

Lead author John Cook created a short video summarizing the findings of the new survey:

Head over to TheConsensusProject.com and follow their Twitter for further updates.

Thu, 2013-05-09 11:11Stephen Leahy
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BC LNG Exports Blow Climate Targets Way, Way Out of the Water

Rendering of BC LNG export facility in BC.

This post is the second of a two part series. Read the first installment, Unreported Emissions From Natural Gas Blow Up BC's Climate Action Plan.

Methane leaks from British Columbia's natural gas industry are likely at least 7 times greater than official numbers increasing the entire provinces' carbon footprint by nearly 25%. That's like putting 3 million more vehicles on BC's roads.

As Part One revealed official government figures state only 0.3% to 0.4% of BC's natural gas production leaks into the atmosphere. No believes that is accurate. Independent studies in the US show these methane leaks range between 2% and 9%.

All aspects of natural gas operations including drilling gathering, processing and pipelines can leak methane into the atmosphere. The industry doesn't like to call them leaks, preferring the term “fugitive emissions.”

Seals, valves, joints, compressor pumps all can leak. There are literally hundreds of thousands of points where this can occur said Bill Tubbs Manager, Environmental Permitting & Regulation at Spectra Energy Transmission. Headquartered in Houston, Texas Spectra is the biggest gas pipeline and processing companies operating in western Canada.

We don't measure fugitive emissions, we estimate how much for reporting purposes,” Tubbs told DeSmog.

Judith Curry

Judith Curry

 Credentials

  • PhD, Geophysical Sciences, University of Chicago (1982).
  • B.S., Geography, Northern Illinois University (1974).
Source: [1]
 

 Background

Read more: Judith Curry
Sat, 2013-04-27 07:00Brendan DeMelle
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Fox Snooze: Global Warming Name Game Debunked By Media Matters (Again)

Media Matters put out a video this past week with clips of all the recent FOX News mentions of a global warming name conspiracy. The Fox 'conspiracy' is that 'liberals' stopped calling it global warming and started calling it climate change. Little did they realize, apparently, that the man responsible for the partisan polarization over the terminology of climate change vs. global warming is none other than FOX News contributor Frank Luntz. Watch: 


As Media Matters points out: 
Scientists use “global warming” when speaking about the increase in average global surface temperatures. They use “climate change” to refer to all the other disruptions that greenhouse gas emissions are causing – from rising sea levels, to abruptly changing precipitation patterns that increase the likelihood of droughtsand wildfires in certain areas and extreme flooding in others, to acidifying oceans that disturb the marine food web.

If you're still confused, head over to Joe Romm's post, Debunking The Dumbest Denier Myth (Again): ‘Climate Change’ Vs. ‘Global Warming’

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