Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Control methane now, greenhouse gas expert warns

15.05.2014

As the shale gas boom continues, the atmosphere receives more methane, adding to Earth’s greenhouse gas problem. Robert Howarth, greenhouse gas expert and ecology and environmental biology professor, fears that we may not be many years away from an environmental tipping point – and disaster.

“We have to control methane immediately, and natural gas is the largest methane pollution source in the United States,” said Howarth, who explains in an upcoming journal article that Earth may reach the point of no return if average global temperatures rise by 1.5 to 2 degrees Celsius in future decades.

“If we hit a climate-system tipping point because of methane, our carbon dioxide problem is immaterial. We have to get a handle on methane, or increasingly risk global catastrophe.”

Howarth’s study, “A Bridge to Nowhere: Methane Emissions and the Greenhouse Gas Footprint of Natural Gas,” will be published May 20 in the journal Energy Science and Engineering.

Natural gas – that once seemingly promising link between the era of oil and coal to the serenity of sustainable solar, wind and water power – is a major source of atmospheric methane, due to widespread leaks as well as purposeful venting of gas. Howarth points to “radiative forcing,” a measure of trapped heat in Earth’s atmosphere from man-made greenhouse gases.

The current role of methane looms large, he says, contributing over 40 percent of current radiative forcing from all greenhouse gases, based on the latest science from the Intergovernmental Panel on Climate Change.

The role of methane as a driver of global warming is even more critical than this 40 percent value might indicate, Howarth notes. The climate system responds much more quickly to reducing methane than to carbon dioxide.

If society aggressively controlled carbon dioxide emissions, but ignored methane emissions, the planet would warm to the dangerous 1.5 to 2.0 degree Celsius threshold within 15 to 35 years. By reducing methane emissions, society buys some critical decades of lower temperatures.

“Society needs to wean itself from the addiction to fossil fuels as quickly as possible,” Howarth said. “But to replace some fossil fuels – coal, oil – with another, like natural gas, will not suffice as an approach to take on global warming. Rather, we should embrace the technologies of the 21st century and convert our energy systems to ones that rely on wind, solar and water power.” 

Cornell University has television, ISDN and dedicated Skype/Google+ Hangout studios available for media interviews. For additional information, see this Cornell Chronicle story.

Melissa Osgood | Eurek Alert!
Further information:
http://mediarelations.cornell.edu/2014/05/14/control-methane-now-greenhouse-gas-expert-warns/

Further reports about: Earth Footprint Methane Skype dioxide emissions explains fuels gases greenhouse television temperatures

More articles from Ecology, The Environment and Conservation:

nachricht Europe shows that humans and large predators can share the same landscape
19.12.2014 | Schwedischer Forschungsrat - The Swedish Research Council

nachricht Microplastics in the ocean: biologists study effects on marine animals
19.12.2014 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

Value chain driven development of rural areas in Eastern Europe

22.12.2014 | Event News

Smart Cities

08.12.2014 | Event News

European Polymer Congress 2015 in Dresden/Germany

01.12.2014 | Event News

 
Latest News

Coral Reveals Long-Term Link Between Pacific Winds, Global Climate

22.12.2014 | Earth Sciences

First Direct Evidence that a Mysterious Phase of Matter Competes with High-Temperature Superconductivity

22.12.2014 | Materials Sciences

Yellowstone's Thermal Springs -- Their Colors Unveiled

22.12.2014 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>