Runaway Climate – Extreme Greenhouse Effect

Publications by James E. Hansen pubs.giss.nasa.gov, his latest book is: Storms of My Grandchildren: The Truth About the Coming Climate Catastrophe and Our Last Chance to Save Humanity. Amazon.com Runaway climate change Runaway climate change describes a scenario in which the climate system passes a threshold or tipping point, after which internal positive feedback effects cause the climate to continue changing, even…

The permafrost carbon feedback loop

THE world is on the cusp of a “tipping point” into dangerous climate change, according to new data gathered by scientists measuring methane leaking from the Arctic permafrost and a report presented to the United Nations on Tuesday. “The permafrost carbon feedback is irreversible on human time scales,” says the report, Policy Implications of Warming…

Melting permafrost releases greenhouse gases


A UN report has warned that carbon dioxide and methane released from melting permafrost could push the climate past a tipping point and dangerously accelerate global warming.

Broadcast: 28/11/2012, Reporter: Tony Jones
http://www.abc.net.au/lateline/conten…

Thawing permafrost may amplify global warming, U.N. reports
http://www.latimes.com/news/science/s…

Policy Implications of Warming Permafrost
http://www.unep.org/pdf/permafrost.pdf