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Volume 15, issue 16
Atmos. Chem. Phys., 15, 9129–9141, 2015
https://doi.org/10.5194/acp-15-9129-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

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

Atmos. Chem. Phys., 15, 9129–9141, 2015
https://doi.org/10.5194/acp-15-9129-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 18 Aug 2015

Research article | 18 Aug 2015

What is the limit of climate engineering by stratospheric injection of SO2?

U. Niemeier and C. Timmreck

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Cited articles

Aquila, V., Garfinkel, C. I., Newman, P., 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, https://doi.org/10.1002/2013GL058818, 2014.
Bekki, S., Pyle, J. A., Zhong, W., Haigh, R. T. J. D., and Pyle, D. M.: The role of microphysical and chemical processes in prolonging the climate forcing of the Toba eruption, Geophys. Res. Lett., 23, 2669–2672, 1996.
Brasseur, G. and Solomon, S.: Aeronomy of the Middle Atmosphere, Springer, 3300 AA Dordrecht, the Netherlands, 2005.
Budyko, M. I.: Climatic changes, American Geophysical Society, Washington, D.C., https://doi.org/10.1029/SP010, 1977.
Cirisan, A., Spichtinger, P., Luo, B. P., Weisenstein, D. K., Wernli, H., Lohmann, U., and Peter, T.: Microphysical and radiative changes in cirrus clouds by geoengineering the stratosphere, J. Geophys. Res.-Atmos., 118, 4533–4548, https://doi.org/10.1002/jgrd.50388, 2013.
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The injection of sulfur dioxide is considered as an option for solar radiation management. We have calculated the effects of SO2 injections up to 100 Tg(S)/y. Our calculations show that the forcing efficiency of the injection decays exponentially. This result implies that SO2 injections in the order of 6 times Mt. Pinatubo eruptions per year are required to keep temperatures constant at that anticipated for 2020, whilst maintaining business as usual emission conditions.
The injection of sulfur dioxide is considered as an option for solar radiation management. We...
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