After rising during the 1980s, the growth of methane in the atmosphere slowed during the 1990s, providing a bright spot in an otherwise gloomy global warming forecast.More details over at National Geographic.
And while methane concentrations in Earth's atmosphere have remained stable, the study suggests the news isn't as good as scientists once thought.
Writing in tomorrow's issue of the journal Nature, researchers say that human-caused methane emissions began rising again in 1999, possibly tied to China's booming economy.
The increase has been masked, however, by a drop in methane emissions from wetlands as they dried out, especially in the Northern Hemisphere and possibly due to global warming.
Methane emissions rising
Posted on Saturday, September 30 2006 @ 15:08 CEST by Thomas De Maesschalck
Researchers report emissions of methane are on the rise.