Articles | Volume 15, issue 16
Atmos. Chem. Phys., 15, 9129–9141, 2015
https://doi.org/10.5194/acp-15-9129-2015

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

Atmos. Chem. Phys., 15, 9129–9141, 2015
https://doi.org/10.5194/acp-15-9129-2015

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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Short summary
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.
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