The Potential of Stratospheric Aerosol Injection to Reduce the Climatic Risks of Explosive Volcanic Eruptions

Quaglia, I.; Visioni, D.; Bednarz, E. M.; MacMartin, D. G.; Kravitz, B.

doi:10.1029/2023gl107702

i

The Potential of Stratospheric Aerosol Injection to Reduce the Climatic Risks of Explosive Volcanic Eruptions

2024
By Quaglia, I. ; Visioni, D. ; Bednarz, E. M. ; ...

Details

Journal Title:

Geophysical Research Letters
Personal Author:

Quaglia, I. ; Visioni, D. ; Bednarz, E. M. ; MacMartin, D. G. ; Kravitz, B.
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; CSL (Chemical Sciences Laboratory)
Description:

Sulfur‐rich volcanic eruptions happen sporadically. If Stratospheric Aerosol Injection (SAI) were to be deployed, it is likely that explosive volcanic eruptions would happen during such a deployment. Here we use an ensemble of Earth System Model simulations to show how changing the injection strategy post‐eruption could be used to reduce the climate risks of a large volcanic eruption; the risks are also modified even without any change to the strategy. For a medium‐size eruption (10 Tg‐SO2) comparable to the SAI injection rate, the volcanic‐induced cooling would be reduced if it occurs under SAI, especially if artificial sulfur dioxide injections were immediately suspended. Alternatively, suspending injection only in the eruption hemisphere and continuing injection in the opposite would reduce shifts in precipitation in the tropical belt and thus mitigate eruption‐induced drought. Finally, we show that for eruptions much larger than the SAI deployment, changes in SAI strategy would have minimal effect.
Source:

Geophysical Research Letters, 51(8)
DOI:

https://doi.org/10.1029/2023gl107702
ISSN:

0094-8276 ; 1944-8007
Format:

pdf
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Funding:

Grant no. NA22OAR4320151 ; Grant no. NA22OAR4310479
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Library
Main Document Checksum:

urn:sha-512:b16a0d2ca0b7a92113244ab83a14f76bf42a2d0a356375c635ed205723c21cf17164151ad687df2d93df9eab132b002841b5dec4d12b7d5f4399a06512b1dd84
Download URL:

https://repository.library.noaa.gov/view/noaa/67954/noaa_67954_DS1.pdf
File Type:

[PDF - 5.93 MB ]

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