Methane Rising? | April 25th, 2008
After a relative leveling off of atmospheric methane levels, the US National Oceanographic and Atmospheric Administration released new figures indicating that there has been a large rise in global atmospheric methane levels over the past year. While certainly not a trend, it is something to keep an eye on. Atmospheric methane, coming from cows, landfills, forests, and melting permafrost, does last long in the atmosphere – thus the recent leveling off – however, it causes about 25 times more warming than carbon dioxide!
