Cited by 53Climate Change and GeoengineeringAtmospheric aerosols and cloudsAtmospheric chemistry and aerosols

What goes up must come down: impacts of deposition in a sulfate geoengineering scenario

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Visioni, Daniele, Slessarev, Eric, MacMartin, Douglas G, Mahowald, Natalie M, Goodale, Christine L, Xia, Lili·2020·Environmental Research Letters

Abstract

The problem of reducing the impacts of rising anthropogenic greenhouse gas on warming temperatures has led to the proposal of using stratospheric aerosols to reflect some of the incoming solar radiation back to space. The deliberate injection of sulfur into the stratosphere to form stratospheric sulfate aerosols, emulating volcanoes, will result in sulfate deposition to the surface. We consider here an extreme sulfate geoengineering scenario necessary to maintain temperatures at 2020 levels while greenhouse gas emissions continue to grow unabated. We show that the amount of stratospheric sulfate needed could be globally balanced by the predicted decrease in tropospheric anthropogenic SO 2 emissions, but the spatial distribution would move from industrialized regions to pristine areas. We show how these changes would affect ecosystems differently depending on present day observations of soil pH, which we use to infer the potential for acid-induced aluminum toxicity across the planet.

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Crossref · 10.1088/1748-9326/ab94eb

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39 of 39 references verified0 citation errors · 0 not checkable

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  • Previous studies on health impacts of SAI due to air quality changes have either relied on more idealized modeling frameworks and/or simplified mortality estimation methods.

    “Previous studies have looked into the health impacts of SAI due to air quality changes (Eastham et al., 2018; Visioni et al., 2020; Moch et al., 2023; Harding et al., 2024). These efforts have either relied on more idealized modeling frameworks and/or simplified mortality estimation methods.”
  • Under SSP2-4.5, the spatial distribution of the dominant PM2.5 species is broadly similar to ARISE-SAI-1.5; SO2 does not generally emerge as the dominant species except in particularly pristine environments or regions that are already extremely polluted.

    “Under SSP2-4.5 (not shown), the spatial distribution of the dominant PM2 : 5 species is broadly similar to Fig. 2.; SO2 does not generally emerge as the dominant species except in particularly pristine environments (e.g., high latitudes; (Visioni et al., 2020)) or in regions that are already extremely polluted.”

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Authors
Visioni, D., Slessarev, E., MacMartin, D. G., Mahowald, N. M., Goodale, C. L., & Xia, L.
Affiliations
  • Cornell University (US)
  • Lawrence Livermore National Laboratory (US)
  • Rutgers, The State University of New Jersey (US)
Corresponding author
Visioni, Daniele
Venue
Environmental Research Letters
Published
2020-08-26
Volume
15
Issue
9
Pages
094063
ISSN
1748-9326 (ISSN-L)
OpenAlex
W3027320064
Cited by
53
References
42
Citations by year
2026: 9 · 2025: 6 · 2024: 12 · 2023: 6 · 2022: 6 · 2021: 13 · 2020: 1
FWCI
2.42
Type
journal article
Language
en
Open access
Locations
  • Environmental Research Letters (publishedVersion, cc-by)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
National Science Foundation
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate Change and Geoengineering
  • Physical Sciences › Environmental Science › Global and Planetary Change › Atmospheric aerosols and clouds
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
Keywords
solar geoengineering, stratospheric sulfate aerosols, sulfate deposition, sulfur dioxide emissions, soil acidification, soil pH, aluminum toxicity, ecosystem impacts, climate change mitigation

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