Earth System Dynamics
Earth System Dynamics
ESD
Articles | Volume 13, issue 1
Articles | Volume 13, issue 1
https://doi.org/10.5194/esd-13-201-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/esd-13-201-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 13, issue 1
Research article
 | 
25 Jan 2022
Research article |  | 25 Jan 2022

How large is the design space for stratospheric aerosol geoengineering?

Yan Zhang, Douglas G. MacMartin, Daniele Visioni, and Ben Kravitz

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Short summary
Adding SO2 to the stratosphere could temporarily cool the planet by reflecting more sunlight back to space. However, adding SO2 at different latitude(s) and season(s) leads to significant differences in regional surface climate. This study shows that, to cool the planet by 1–1.5 °C, there are likely six to eight choices of injection latitude(s) and season(s) that lead to meaningfully different distributions of climate impacts.
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