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Fracking News

The global warming potential of methane is damn important

September 7, 2019 By TXsharon

Dear Readers,

I’ve explained the global warming potential (GWP) of methane previously (see methane category), and I know that many of you got it. Some highly intelligent people still aren’t getting it, and many of them are reporters. Since reporters inform the public and they are getting it wrong,  here I go again.

Methane the super pollutant

Methane is a potent greenhouse gas, also known as a super pollutant. NASA 2018 and Howarth 2019 found that over 60% of the global spike in methane comes from oil and gas and the spike correlates to the fracking boom.

Methane is an asphyxiant, but it is not toxic like the volatile organic compound hitchhikers that come up to the surface with it. And like all hydrocarbon gases, methane is invisible. I use an optical gas imaging camera that makes invisible hydrocarbon gases, including methane, visible.

Methane, the low-hanging fruit for climate

Carbon dioxide equivalent (CO2eq) stands for a unit based on the global warming potential (GWP) of different greenhouse gases. The CO2eq unit measures the environmental impact of one tonne of these greenhouse gases in comparison to the impact of one tonne of CO2. Climate Policy Info Hub

GWP for CO2 is one and all other greenhouse gases are measured against that. The Intergovernmental Panel of Climate Change (IPCC) 5th assessment report determined the GWP for methane as 84 to 86 over 20 years, meaning for 20 years it’s warming potential is 84 to 86 times that of CO2.


CO2 stays in the atmosphere for centuries are longer. Methane has a huge and fast impact on the climate, but it only stays in the atmosphere around 9 to 12 years. This is why there is urgency in reducing methane and importance in getting the information correct.

“Reducing methane now can provide an instant way to slow global warming and meet the United Nations’ target of keeping the planet well below a 2-degree Celsius average rise,” Robert Howarth, Cornell

Reporters keep getting methane GWP wrong

If one Googles “Global Warming Potential Methane,” the first link is EPA. EPA uses a 100-year time-frame for methane and states that the GWP is 20-36. Since methane only stays in the atmosphere for about 9 to 12 years, this vastly dilutes the effects methane has on our climate. But busy reporters consider EPA an authority and use the EPA number in articles even though it’s not current science.

Scientific American explains

Using a 100-year time-frame underestimates methane’s negative impacts by almost five times, and there is no scientific reason to choose GWP100 over GWP20.

But policymakers typically ignore methane’s warming potential over 20 years (GWP20) when assembling a nation’s emissions inventory. Instead, they stretch out methane’s warming impacts over a century, which makes the gas appear more benign than it is, experts said.

So, the choice to use GWP100 is a political one, not a scientific one.

When you see something, say something

We need to help the media understand the science versus politics of methane GWP. The Wall Street Journal, The Intercept, and even the Newsy documentary, Blowout, have gotten it all wrong, wrong, wrong.

When I see it, I write a letter to the reporter or the editor or ombudsman. Here’s a sample letter so you can join me in the effort. You can also tweet to the reporter, and ask them for a correction.

Heading video shows invisible methane venting from Energy Transfer Hoban Gin Compressor Station.

About Sharon Wilson

Sharon Wilson is considered a leading citizen expert on the impacts of shale oil and gas extraction. She is the go-to person whether it’s top EPA officials from D.C., national and international news networks, or residents facing the shock of eminent domain and the devastating environmental effects of natural gas development in their backyards.

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Filed Under: climate change, Methane

Comments

  1. Jerry Lobdill says

    September 15, 2019 at 5:17 pm

    Do you think it’s conceivable that they’re getting it wrong on purpose and ignoring you?
    This is what is happening when the subject is debt and the speaker is Dr. Michael Hudson or anyone else who understands that our monetary system is rigged in favor of rentiers.

    What’s your proposed next step?

    • TXsharon says

      September 15, 2019 at 6:49 pm

      I do not think it is intentional with most of the media. I’ve worked with many of them. I think their editors believe that the EPA is the best source for the GWP of methane. I plan on writing to them and calling them out on Twitter each time it happens, but I’m just one person so I need others, especially scientists, to join me.
      TXsharon recently posted..Blowout: Inside America’s Energy GambleMy Profile

  2. Jonathan says

    September 22, 2019 at 1:03 pm

    *test*

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