
433Climate Engineering: Impact Reducer or Suffering Inducer?
changes in solar radiation would be needed to ensure that an SRM-based
approach is neither over- or under-compensating for the warming inuence
of the increases in greenhouse gas concentrations.
Accepting the results of the model simulation that the CO
2
-induced
warming inuence could, in principle, be offset by reductions in absorbed
solar radiation, a number of possible approaches for accomplishing this
have been proposed (see reviews, for example, by MacCracken [1991], NAS
[1992], Leemans et al. [1995], Flannery et al. [1997], Keith [2000], Schneider
[2001], Lane et al. [2007], a