A simple model to account for regional inequalities in the effectiveness of solar radiation management
We present a simple model to account for the potential effectiveness of solar radiation management (SRM) in compensating for anthropogenic climate change. This method provides a parsimonious way to account for regional inequality in the assessment of SRM effectiveness and allows policy and decision makers to examine the linear climate response to different SRM configurations. To illustrate how the model works, we use data from an ensemble of modeling experiments conducted with a general circulation model (GCM). We find that an SRM scheme optimized to restore population-weighted temperature changes to their baseline compensates for 99% of these changes while an SRM scheme optimized for population-weighted precipitation changes compensates for 97% of these changes. Hence, while inequalities in the effectiveness of SRM are important, they may not be as severe as it is often assumed.
KeywordsPrecipitation Change Climate Response Economic Output Social Objective Regional Inequality
Unable to display preview. Download preview PDF.
- Ban-Weiss GA, Caldeira K (2010) Geoengineering as an optimization problem. Environ Res Lett 5:034009, 9 ppGoogle Scholar
- Blackstock J, Battisti DS, Caldeira K, Eardley DM, Katz JI, Keith DW, Patrinos AAN, Schrag DP, Socolow RH, Koonin SE (2009) Climate engineering responses to climate emergencies, NovimGoogle Scholar
- Nakicenovic N, Sturat R (2000) IPCC special report on emission scenarios. Cambridge University PressGoogle Scholar
- Nordhaus W (2008) A question of balance: weighing the options on global warming policies. Yale University Press, 234 ppGoogle Scholar
- NRC committee on stabilization targets for atmospheric greenhouse gas concentrations, climate stabilization targets: emissions, concentrations, and impacts over decades to millennia. The National Academies Press. ISBN:0-30915177-5. Available at http://www.nap.edu/catalog/12877.html
- Randall DA et al (2007) IPCC Climate change 2007: the physical science basisGoogle Scholar
- Rasch P, Crutzen P, Coleman D (2008) Exploring the geoengineering of climate using stratospheric sulfate aerosols: the role of particle size. Geophys Res Lett 35:L02809, 6 ppGoogle Scholar
- Shepherd J, Caldeira K, Haigh J, Keith D, Launder B, Mace G, MacKerron G, Pyle J, Rayner S, Redgwell C, Watson A (2009) Geoengineering the climate: science, governance and uncertainty. The Royal AcademyGoogle Scholar