CO₂-removal News

Goes, M., Keller, K., and Tuana, N. (2011), ‘The economics (or lack thereof) of aerosol geoengineering’

Goes, Marlos; Tuana, Nancy; Keller, Klaus (2011): The economics (or lack thereof) of aerosol geoengineering. In: Climatic Change 109 (3-4), pp. 719–744.

„Anthropogenic greenhouse gas emissions are changing the Earth’s climate and impose substantial risks for current and future generations. What are scientifically sound, economically viable, and ethically defendable strategies to manage these climate risks? Ratified international agreements call for a reduction of greenhouse gas emissions to avoid dangerous anthropogenic interference with the climate system. Recent proposals, however, call for a different approach: to geoengineer climate by injecting aerosol precursors into the stratosphere. […]“


Horton, J. B. (2011), ‘Geoengineering and the Myth of Unilateralism

Horton, J. B. (2011), ‘Geoengineering and the Myth of Unilateralism: Pressures and Prospects for International Cooperation’, Stanford Journal of Law, Science [&] Policy, IV: 56–69.

„In this article, I argue that fear of unilateralism is largely misplaced, grounded more in unexamined policy assumptions than in reasoned analysis of the strategic situation faced by states. I will present this argument in five parts. First, I will document the widespread notion that unilateral geoengineering poses a genuine threat to the international order. Second, I will closely examine the interests and constraints that are likely to confront states contemplating intervention in the climate system. Third, I will demonstrate that international dynamics are
more likely to create pressures leading to cooperation than to foster tendencies toward unilateralism. Fourth, I will consider different mechanisms for encouraging collaboration on climate intervention strategies. Finally, I will consider the implications of this argument for future discussions of geoengineering.“

Kravitz, B., Robock, A., Boucher, O. et al. (2011), ‘The Geoengineering Model Intercomparison Project (GeoMIP)

Kravitz, B., Robock, A., Boucher, O. et al. (2011), ‘The Geoengineering Model Intercomparison Project (GeoMIP)’, Atmosph. Sci. Lett, 12/2: 162–167. DOI 10.1002/asl.316

„To evaluate the effects of stratospheric geoengineering with sulphate aerosols, we propose standard forcing scenarios to be applied to multiple climate models to compare their results and determine the robustness of their responses. Thus far, different modeling groups have used different forcing scenarios for both global warming and geoengineering, complicating the comparison of results. We recommend four experiments to explore the extent to which geoengineering might offset climate change projected in some of the Climate Model Intercomparison Project 5 experiments. These experiments focus on stratospheric aerosols, but future experiments under this framework may focus on different means of geoengineering.“