How do uncertain climate threshold responses affect the trade-offs between mitigation, carbon sequestration, and geoengineering?

Klaus Keller (lead), David Anthoff, Patrick Applegate, Chris Forest, James Kasting, Rob Lempert, William Nordhaus, Patrick Reed, Christian Traeger

Anthropogenic greenhouse gas emissions might trigger threshold responses of the Earth system, such as a disintegration of the Greenland Ice Sheet. We will analyze how the deeply uncertain risks of threshold responses combined with learning about the potential thresholds affects the economically efficient portfolio between CO2 emissions abatement and faster-acting options, such as carbon sequestration and geoengineering.

Project #2

How do uncertain climate threshold responses affect the trade-offs between mitigation, carbon sequestration, and geoengineering?