Articles | Volume 16, issue 5
Atmos. Chem. Phys., 16, 2843–2862, 2016
https://doi.org/10.5194/acp-16-2843-2016

Special issue: The Geoengineering Model Intercomparison Project (GeoMIP):...

Atmos. Chem. Phys., 16, 2843–2862, 2016
https://doi.org/10.5194/acp-16-2843-2016

Research article 04 Mar 2016

Research article | 04 Mar 2016

Climatic impacts of stratospheric geoengineering with sulfate, black carbon and titania injection

Anthony C. Jones et al.

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Subject: Aerosols | Research Activity: Atmospheric Modelling | Altitude Range: Stratosphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Aquila, V., Oman, L. D., Stolarski, R. S., Colarco, P. R., and Newman, P. A.: Dispersion of the volcanic sulfate cloud from a Mount Pinatubo–like eruption, J. Geophys. Res., 117, D06216, https://doi.org/10.1029/2011JD016968, 2012.
Aquila, V., Garfinkel, C. I., Newman, P. A., Oman, L. D., and Waugh, D. W.: Modifications of the quasi-biennial oscillation by a geoengineering perturbation of the stratospheric aerosol layer, Geophys. Res. Lett., 41, 1738–1744, 2014.
Bala, G., Duffy, P. B., and Taylor, K. E.: Impact of geoengineering schemes on the global hydrological cycle, P. Natl. Acad. Sci. USA, 105, 7664–7669, 2008.
Bellouin, N., Boucher, O., Haywood, J., Johnson, C., Jones, A., Rae, J., and Woodward, S.: Improved representation of aerosols for HadGEM2, Hadley Centre technical note 73, Hadley Centre, Met Office, Exeter, UK, available at: http://www.metoffice.gov.uk/media/pdf/8/f/HCTN_73.pdf, 42 pp., 2007.
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In this paper we assess the potential climatic impacts of geoengineering with sulfate, black carbon and titania injection strategies. We find that black carbon injection results in severe stratospheric warming and precipitation impacts, and therefore black carbon is unsuitable for geoengineering purposes. As the injection rates and climatic impacts for titania are close to those for sulfate, there appears little benefit of using titania when compared to injection of sulfur dioxide.
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