U.S. government scientists calculate that levels of the potent heat-trapping gas methane rose at a record pace last year.
Climate Change Could Cost U.S. $2 Trillion Each Year by the End of the Century, White House Says
The key question is whether this increasing trend could add to climate change problems or is a pandemic-related blip due to the decrease in methane-destroying nitrous oxides from less car and industrial pollution, said Stanford University climate scientist Rob Jackson. Both fossil fuels and agriculture are key in methane increases, Howarth said. But he said, “my research strongly points toward fossil fuels as being the largest cause of the increase since 2008, with increase emissions from shale gas production from fracking in the U.S. being a major part of that.”
In a study last year, Lan looked at the chemical isotopes to isolate where steady increases in methane emissions since 2006 may be coming from. The chemical signature pointed away from fossil fuels as the bigger guilty party and more toward either natural wetland emissions or agriculture, she said.
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