Environment & Energy
Related: About this forumThe warming will feed the warming....
Arctic melt releasing ancient methane
Scientists have identified thousands of sites in the Arctic where methane that has been stored for many millennia is bubbling into the atmosphere.
The methane has been trapped by ice, but is able to escape as the ice melts.
Writing in the journal Nature Geoscience, the researchers say this ancient gas could have a significant impact on climate change.
Methane is the second most important greenhouse gas after CO2 and levels are rising after a few years of stability.
There are many sources of the gas around the world, some natural and some man-made, such as landfill waste disposal sites and farm animals.
Tracking methane to these various sources is not easy.
http://www.bbc.co.uk/news/science-environment-18120093
longship
(40,416 posts)Lower albedo means more of the sun's energy is absorbed rather than reflected. Needless to say, snow/ice is very efficient at reflecting solar energy.
This is yet another of those positive feedback mechanisms built into our climate and why warmer means more warming.
R&K