How Hot will it Get?

The latest projections about the extent of planetary warming and the dire consequences of our growing carbon imbalance. Series: “Science at the Theater” [Science] A special Earth Day edition of Science at the Theater —”How Hot Will It Get?” — Featuring presentations by Lab climate scientists Bill Collins, Margaret Torn, Michael Wehner, and Jeff Chambers,…

Permafrost: The Tipping Time Bomb

“If we can limit our emissions, then the permafrost region will release less carbon to the atmosphere, there is a curve – it’s not a all or nothing question.” Ben Abbott One of the most feared of climate change “feedbacks” is the potential release of greenhouse gases by melting arctic permafrost soils. New research indicates…

3.5 mil years ago, summer temps were ~8°C warmer than today, CO2 was ~400 ppm

Two recent studies on past temperatures… Pliocene Warmth, Polar Amplification, and Stepped Pleistocene Cooling Recorded in NE Arctic Russia Understanding the evolution of Arctic polar climate from the protracted warmth of the middle Pliocene into the earliest glacial cycles in the Northern Hemisphere has been hindered by the lack of continuous, highly resolved Arctic time…

The Secret of El Dorado (The discovery of Biochar)

In 1542, the Spanish Conquistador, Francisco de Orellana ventured along the Rio Negro, one of the Amazon Basin’s great rivers. Hunting a hidden city of gold, his expedition found a network of farms, villages and even huge walled cities. At least that is what he told an eager audience on his return to Spain. http://www.bbc.co.uk/science/horizon/2002/eldorado.shtml…

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