Stratospheric heating by potential geoengineering aerosols: HEATING BY GEOENGINEERING AEROSOLS
Open accessAbstract
[1] A fixed dynamical heating model is used to investigate the pattern of zonal-mean stratospheric temperature change resulting from geoengineering with aerosols composed of sulfate, titania, limestone and soot. Aerosol always heats the tropical lower stratosphere, but at the poles the response can be either heating, cooling, or neutral. The sign of the change in stratospheric Pole-Equator temperature difference depends on aerosol type, size and season. This has implications for modeling geoengineering impacts and the response of the stratospheric circulation.
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Injection of solid particles such as alumina, calcite or diamond might reduce some of the limitations of sulfuric acid-based stratospheric aerosol injection.
“Recent studies have shown that the injection of solid particles, such as alumina (Al 2 O3), calcite (CaCO 3 ) or diamond (C) particles might reduce some of the limitations of sulfuric acid-based SAI (Dykema et al., 2016; Ferraro et al., 2011; Keith et al., 2016; Pope et al., 2012; Weisenstein et al., 2015).”
From Chemical Impact of Stratospheric Alumina Particle Injection for Solar Radiation Modification and Related Uncertainties (2023) · cites this paper as Ferraro et al., 2011
Section 2.2 studies limestone dust and titania as alternatives to sulfate, and Results §3 reports that titania produced about 30% of sulfate’s stratospheric temperature change. This supports the possibility that an alternative particle could reduce one sulfate-related limitation. The paper does not study alumina or diamond, and its findings do not establish that the three named particles reduce the limitations of sulfuric-acid-based injection generally. (LLM, conf=0.84)
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“…have shown that the injection of solid particles, such as alumina (Al 2 O 3 ), calcite (CaCO 3 ) or diamond (C) particles might reduce some of the limitations of sulfuric acid-based SAI (Dykema et al., 2016; Ferraro et al., 2011; Keith et al., 2016; Pope et al., 2012; Weisenstein et al., 2015).”
BackgroundVattioni, S., Weber, R., Feinberg, A., Stenke, A., Dykema, J. A., Luo, B., Kelesidis, G. A., Bruun, C. A., Sukhodolov, T., Keutsch, F. N., et al. (2024) · Geoscientific Model Development · doi:10.5194/gmd-17-7767-2024 · Cited by 17 · see citing works
- Authors
- Ferraro, A. J., Highwood, E. J., & Charlton-Perez, A. J.
- Affiliations
- University of Reading (GB)
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2011-12-28
- Volume
- 38
- Issue
- 24
- Pages
- n/a-n/a
- ISSN
- 0094-8276 (ISSN-L)
- OpenAlex
- W1670575149
- Cited by
- 84
- References
- 28
- Citations by year
- 2026: 5 · 2025: 7 · 2024: 6 · 2023: 6 · 2022: 6 · 2021: 7 · 2020: 2 · 2019: 8 · 2018: 6 · 2017: 4 · 2016: 10 · 2015: 4 · 2014: 6 · 2013: 2 · 2012: 5
- FWCI
- 3.54
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Geophysical Research Letters (publishedVersion)
- Figshare (submittedVersion)
- Open Research Exeter (University of Exeter) (submittedVersion)
- Topics
- Physical Sciences › Environmental Science › Global and Planetary Change › Climate Change and Geoengineering
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric Ozone and Climate
- Physical Sciences › Environmental Science › Global and Planetary Change › Atmospheric aerosols and clouds
- Keywords
- solar geoengineering, stratospheric aerosols, stratospheric heating, sulfate aerosols, soot aerosols, zonal mean temperature, aerosol particle size, stratospheric circulation
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