Tag Archives: nitrous oxide

Thawing Permafrost Emitting Higher Levels of Potent Greenhouse Gas Than Previously Thought: Study

Nitrous oxide is nearly 300 times more potent than carbon dioxide

By Jessica Corbett, staff writer for Common Dreams. Published 4-16-2019

Point Barrow, the northern-most location in the United States sits between the Chukchi Sea (west) and the Beaufort Sea on the east. (Photo: NASA/GSFC/Jeff Schmaltz/MODIS Land Rapid Response Team/Flickr)

As the Arctic enters an “unprecedented” state of warming, a new study shows that emissions of a potent greenhouse gas from thawing permafrost in the planet’s northernmost region may be 12 times higher than previously thought.

That’s according to a study published this month in the journal Atmospheric Chemistry and Physics. The paper’s findings add even more weight to scientists’ urgent warnings about the mounting threats of permafrost thaw. Continue reading

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Warnings of ‘Destructive and Irreversible Impacts’ as Greenhouse Gases Hit Highest Levels in 3-5 Million Years

“The science is clear,” says the head of the World Meteorological Organization. “The window of opportunity for action is almost closed.”

By Jessica Corbett, staff writer for Common Dreams. Published 11-22-2018

Atmospheric concentrations of planet-warming gases have hit record highs, according to a leading U.N. climate agency. (Photo: Tony Webster/Flickr/cc)

As communities most impacted by the climate crisis ramp up demands for urgent global action, atmospheric concentrations of the top three greenhouse gases driving global warming have hit record high levels, according to the World Meteorological Organization (WMO) out Thursday.”

Last year, as the latest WMO Greenhouse Gas Bulletin (pdf) details, average concentrations of carbon dioxide, methane, and nitrous oxide all rose—with CO2 hitting 405.5 parts per million (ppm), its highest level in a few million years.

The report also noted that there was a “resurgence of a potent greenhouse gas and ozone-depleting substance”—called trichlorofluoromethane, or CFC-11—likely tied to “increased emissions associated with production of CFC-11 in eastern Asia.” Continue reading

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