Articles | Volume 15, issue 20
Atmos. Chem. Phys., 15, 11835–11859, 2015
Atmos. Chem. Phys., 15, 11835–11859, 2015

Research article 26 Oct 2015

Research article | 26 Oct 2015

Solar geoengineering using solid aerosol in the stratosphere

D. K. Weisenstein et al.

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Cited articles

Blackstock, J. J., Battisti, D. S., Caldeira, K., Eardley, D. M., Katz, J. I., Keith, D. W., Patrinos, A. A. N., Schrag, D. P., Socolow, R. H., and Koonin, S. E.: Climate Engineering Responses to Climate Emergencies, Novim, available at: pdf/0907.5140 (last access: 21 October 2015), 2009.
Bohren, C. F. and Huffman, D. R.: Absorption and scattering of light by small particles, John Wiley & Sons, 2008.
Brock, C. A., Hamill, P., Wilson, J. C., Jonsson, H. H., and Chang, K. R.: Particle formation in the upper tropical troposphere: A source of nuclei for the stratospheric aerosol, Science, 270, 1650–1653, 1995.
Charlson, R. J., Langner, J., Rodhe, H., Leovy, C. B., and Warren, S. G.: Perturbation of the northern hemisphere radiative balance by backscattering from anthropogenic sulfate aerosols, Tellus A, 43, 152–163, 1991.
Short summary
We investigate stratospheric aerosol geoengineering with solid particle injection by modeling the fractal structure of alumina aerosols and their interaction with background sulfate. We analyze the efficacy (W m^-2 of radiative forcing per megaton of injection) and risks (ozone loss, s) for both alumina and diamond particles as a function of injected monomer radius, finding 240nm alumina and 160nm diamond optimal. We discuss the limitations of our 2-D model study and associated uncertainties.
Final-revised paper