Injecting solid particles into the stratosphere could mitigate global warming but currently entails great uncertainties

10 pages, 5 figures

Bibliographic Details
Authors: Vattioni, Sandro, Peter, Thomas, Weber, Rahel, Dykema, John A., Luo, Beiping, Stenke, Andrea, Feinberg, Aryeh, Sukhodolov, Timofei, Keutsch, Frank N., Ammann, Markus, Vockenhuber, Christof, Döbeli, Max, Kelesidis, Georgios A., Chiodo, Gabriel
Format: article
Status:Published version
Publication Date:2025
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/385018
Online Access:http://hdl.handle.net/10261/385018
https://api.elsevier.com/content/abstract/scopus_id/85218627767
Access Level:Open access
Keyword:Atmospheric chemistry
Climate and Earth system modelling
Climate-change mitigation
Environmental health
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spelling Injecting solid particles into the stratosphere could mitigate global warming but currently entails great uncertainties Vattioni, Sandro Peter, Thomas Weber, Rahel Dykema, John A. Luo, Beiping Stenke, Andrea Feinberg, Aryeh Sukhodolov, Timofei Keutsch, Frank N. Ammann, Markus Vockenhuber, Christof Döbeli, Max Kelesidis, Georgios A. Chiodo, Gabriel Atmospheric chemistry Climate and Earth system modelling Climate-change mitigation Environmental health 10 pages, 5 figures Stratospheric aerosol injection could mitigate harmful effects of global warming, but could have undesirable side effects, such as warming the stratosphere and depleting the ozone layer. We explore the potential benefits of solid alumina and calcite particles as alternatives to sulfate aerosols by using an experimentally informed aerosol-chemistry-climate model. Compared to sulfur dioxide, injection of solids reduces stratospheric warming by up to 70% and diffuse radiation by up to 40%, highlighting their potential benefits. Achieving -1 W m-2 of radiative forcing would likely result in very small ozone changes, but sizable uncertainties remain. These arise from poorly understood heterogeneous chemical and microphysical processes, which, under less likely assumptions, could lead to larger global ozone column changes between -14% and +4%. Our work provides recommendations for improving the understanding of stratospheric aerosol injection using materials other than sulfur dioxide, and underscores the need for kinetic laboratory studies. Support for Gabriel Chiodo and Andrea Stenke was provided by the Swiss National Science Foundation within the Ambizione grant no. PZ00P2_180043. Gabriel Chiodo also acknowledges funding from the European Commission via the ERC StG 101078127 and the Spanish Ministry of Science and Innovation via the Ramon y Cajal grant (no. RYC2021‐033422‐I). Support for Sandro Vattioni was provided by the ETH Research grant no. ETH-1719-2 as well as by the Harvard Geoengineering Research Program. Beiping Luo and Sandro Vattioni also acknowledge funding from the Simons Foundation (grant no. SFI-MPS-SRM-00005217). John Andrew Dykema and Frank Keutsch were supported by the Harvard Solar Geoengineerig Research Program and the Simons Foundation (grant no. SFI-MPS-SRM-00005223). Timofei Sukhodolov acknowledges the support from the Swiss National Science Foundation (grant no. 200020E_219166) and the Karbacher Fonds in Graubünden, Switzerland. Gabriel Chiodo, Timofei Sukhodolov and Beiping Luo also have been supported by the Simons Foundation (SFI-MPS-SRM-00005208). Georgios Kelesidis acknowledges the support from the Particle Technology Laboratory, ETH Zurich and, in part, the Swiss National Science Foundation (grant no. 200020_182668, 250320_163243, and 206021_170729). Simulations have been performed at the EULER cluster of ETH Zurich Peer reviewed Nature Publishing Group http://hdl.handle.net/10261/385018 https://api.elsevier.com/content/abstract/scopus_id/85218627767
title Injecting solid particles into the stratosphere could mitigate global warming but currently entails great uncertainties
spellingShingle Injecting solid particles into the stratosphere could mitigate global warming but currently entails great uncertainties
Vattioni, Sandro
Atmospheric chemistry
Climate and Earth system modelling
Climate-change mitigation
Environmental health
title_short Injecting solid particles into the stratosphere could mitigate global warming but currently entails great uncertainties
title_full Injecting solid particles into the stratosphere could mitigate global warming but currently entails great uncertainties
title_fullStr Injecting solid particles into the stratosphere could mitigate global warming but currently entails great uncertainties
title_full_unstemmed Injecting solid particles into the stratosphere could mitigate global warming but currently entails great uncertainties
title_sort Injecting solid particles into the stratosphere could mitigate global warming but currently entails great uncertainties
author Vattioni, Sandro
author_facet Vattioni, Sandro
Peter, Thomas
Weber, Rahel
Dykema, John A.
Luo, Beiping
Stenke, Andrea
Feinberg, Aryeh
Sukhodolov, Timofei
Keutsch, Frank N.
Ammann, Markus
Vockenhuber, Christof
Döbeli, Max
Kelesidis, Georgios A.
Chiodo, Gabriel
author_role author
author2 Peter, Thomas
Weber, Rahel
Dykema, John A.
Luo, Beiping
Stenke, Andrea
Feinberg, Aryeh
Sukhodolov, Timofei
Keutsch, Frank N.
Ammann, Markus
Vockenhuber, Christof
Döbeli, Max
Kelesidis, Georgios A.
Chiodo, Gabriel
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
topic Atmospheric chemistry
Climate and Earth system modelling
Climate-change mitigation
Environmental health
topic_facet Atmospheric chemistry
Climate and Earth system modelling
Climate-change mitigation
Environmental health
description 10 pages, 5 figures
publishDate 2025
format article
status_str publishedVersion
url http://hdl.handle.net/10261/385018
https://api.elsevier.com/content/abstract/scopus_id/85218627767
eu_rights_str_mv openAccess
publisher Nature Publishing Group
institution Consejo Superior de Investigaciones Científicas (CSIC)
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
_version_ 1878436792470863872
publishDateSort 2025
author_browse Ammann, Markus
Chiodo, Gabriel
Dykema, John A.
Döbeli, Max
Feinberg, Aryeh
Kelesidis, Georgios A.
Keutsch, Frank N.
Luo, Beiping
Peter, Thomas
Stenke, Andrea
Sukhodolov, Timofei
Vattioni, Sandro
Vockenhuber, Christof
Weber, Rahel
publisherStr Nature Publishing Group
score 6,924472

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