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Visioni, Daniele; et al. (2017): Quantification of sulfur deposition changes under sulfate geoengineering conditions

Visioni, Daniele; Pitari, Giovanni; Tuccella, Paolo; Curci, Gabriele (2017): Quantification of sulfur deposition changes under sulfate geoengineering conditions. In Atmos. Chem. Phys. Discuss., pp. 1–42. DOI: 10.5194/acp-2017-987.

"In this study we present results from a composition-climate coupled model (ULAQ-CCM) and a chemistry-transport model (GEOS-Chem), assuming a sustained lower stratospheric equatorial injection of 8 Tg-SO2/yr. Total S-deposition is found to globally increase by 5.2 % when sulfate geoengineering is deployed, with a clear interhemispheric asymmetry (3.8 % and 10.3 % in NH and SH, respectively). The latter is mostly due to the combination of a quasi-homogeneous tropospheric influx of sulfate from the stratosphere, and the highly inhomogeneous amount of anthropogenic sulfur emissions in the boundary layer (mostly located in the Northern Hemisphere)."

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