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MindMover

(5,016 posts)
Sun May 20, 2012, 01:06 PM May 2012

The 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

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The warming will feed the warming.... (Original Post) MindMover May 2012 OP
Plus, ice melt means lower albedo longship May 2012 #1
Yup! nt Bigmack May 2012 #3
Just like Venus. alfredo May 2012 #2
k & r Duppers May 2012 #4

longship

(40,416 posts)
1. Plus, ice melt means lower albedo
Sun May 20, 2012, 01:21 PM
May 2012

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

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