Joint Allocation of Climate Control Mechanisms is the Cheapest Way to Reduce Global Climate Damage

John M. Deutch

August 2019 (Revised November 2019)

Coupling the modes of action of four different climate control mechanisms: emission reduction, CO2 removal, adaptation, and geoengineering can greatly lower the damage of future global average temperature increase. This paper introduces a model for this joint action and solves it for the optimal allocation of available budget to the different control mechanisms over their entire range of action. The results provide intuition about the factors that influence efficient climate control deployment and points to research needed to improve understanding.