Cited by 61Climate Change and GeoengineeringAtmospheric aerosols and cloudsAtmospheric chemistry and aerosols

Seasonally Modulated Stratospheric Aerosol Geoengineering Alters the Climate Outcomes

Visioni, Daniele, MacMartin, Douglas G., Kravitz, Ben, Richter, Jadwiga H., Tilmes, Simone, Mills, Michael J.·2020·Geophysical Research Letters

Abstract

By reflecting some incoming solar radiation, stratospheric aerosol intervention using SO 2 would reduce global mean temperature. Previous research has shown that multiple injection latitudes can be used to maintain not only global mean temperature, but also interhemispheric and equator‐to‐pole temperature gradients. However, the regional climate response depends not only on where the SO 2 is injected, but also on when. We show here that even with these same objectives and same choices of latitudes, injecting in only one season instead of continuously throughout the year results in significant differences in regional climate, for instance in the magnitude of precipitation changes over India. The differential outcomes highlight the potential for underlying trade‐offs, with different choices regarding deployment leading to a different distribution of benefits or harms. This aspect of climate engineering should be considered in developing governance and emphasizes the need for a deeper understanding of the mechanisms underlying the regional responses.

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Crossref · 10.1029/2020gl088337

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Authors
Visioni, D., MacMartin, D. G., Kravitz, B., Richter, J. H., Tilmes, S., & Mills, M. J.
Affiliations
  • Cornell University (US)
  • Pacific Northwest National Laboratory (US)
  • NSF National Center for Atmospheric Research (US)
Corresponding author
Visioni, Daniele
Venue
Geophysical Research Letters
Published
2020-06-13
Volume
47
Issue
12
ISSN
  • 0094-8276 (ISSN-L)
  • 1944-8007
OpenAlex
W3034644201
Cited by
61
References
37
Citations by year
2026: 5 · 2025: 8 · 2024: 6 · 2023: 11 · 2022: 18 · 2021: 11 · 2020: 2
FWCI
3.91
Type
journal article
Language
en
Open access
closed
Locations
  • Geophysical Research Letters (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
Funders
  • David R. Atkinson Center for a Sustainable Future , Cornell University (CBET‐1818759)
  • U.S. Department of Energy (DE‐AC05‐76RL01830)
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
stratospheric aerosol geoengineering, solar radiation management, sulfur dioxide insertion, regional climate response, precipitation change, equator-to-pole temperature gradient

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