The impact of stratospheric aerosol intervention on the North Atlantic and Quasi-Biennial Oscillations in the Geoengineering Model Intercomparison Project (GeoMIP) G6sulfur experiment
International audience Abstract. As part of the Geoengineering Model Intercomparison Project a numerical experiment known as G6sulfur has been designed in which temperatures under a high-forcing future scenario (SSP5-8.5) are reduced to those under a medium-forcing scenario (SSP2-4.5) using the prop...
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2022
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Subjects: | |
Online Access: | https://insu.hal.science/insu-03617467 https://insu.hal.science/insu-03617467/document https://insu.hal.science/insu-03617467/file/acp-22-2999-2022.pdf https://doi.org/10.5194/acp-22-2999-2022 |
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English |
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[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Jones, Andy Haywood, Jim Scaife, Adam Boucher, Olivier Henry, Matthew Kravitz, Ben Lurton, Thibaut Nabat, Pierre Niemeier, Ulrike Séférian, Roland Tilmes, Simone Visioni, Daniele The impact of stratospheric aerosol intervention on the North Atlantic and Quasi-Biennial Oscillations in the Geoengineering Model Intercomparison Project (GeoMIP) G6sulfur experiment |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Abstract. As part of the Geoengineering Model Intercomparison Project a numerical experiment known as G6sulfur has been designed in which temperatures under a high-forcing future scenario (SSP5-8.5) are reduced to those under a medium-forcing scenario (SSP2-4.5) using the proposed geoengineering technique of stratospheric aerosol intervention (SAI). G6sulfur involves introducing sulfuric acid aerosol into the tropical stratosphere where it reflects incoming sunlight back to space, thus cooling the planet. Here, we compare the results from six Earth-system models that have performed the G6sulfur experiment and examine how SAI affects two important modes of natural variability, the northern wintertime North Atlantic Oscillation (NAO) and the Quasi-Biennial Oscillation (QBO). Although all models show that SAI is successful in reducing global mean temperature as designed, they are also consistent in showing that it forces an increasingly positive phase of the NAO as the injection rate increases over the course of the 21st century, exacerbating precipitation reductions over parts of southern Europe compared with SSP5-8.5. In contrast to the robust result for the NAO, there is less consistency for the impact on the QBO, but the results nevertheless indicate a risk that equatorial SAI could cause the QBO to stall and become locked in a phase with permanent westerly winds in the lower stratosphere. |
author2 |
Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Groupe de Météorologie de Grande Échelle et Climat (GMGEC) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) ANR-11-IDEX-0004,SUPER,Sorbonne Universités à Paris pour l'Enseignement et la Recherche(2011) ANR-17-EURE-0006,IPSL-CGS,IPSL Climate graduate school(2017) |
format |
Article in Journal/Newspaper |
author |
Jones, Andy Haywood, Jim Scaife, Adam Boucher, Olivier Henry, Matthew Kravitz, Ben Lurton, Thibaut Nabat, Pierre Niemeier, Ulrike Séférian, Roland Tilmes, Simone Visioni, Daniele |
author_facet |
Jones, Andy Haywood, Jim Scaife, Adam Boucher, Olivier Henry, Matthew Kravitz, Ben Lurton, Thibaut Nabat, Pierre Niemeier, Ulrike Séférian, Roland Tilmes, Simone Visioni, Daniele |
author_sort |
Jones, Andy |
title |
The impact of stratospheric aerosol intervention on the North Atlantic and Quasi-Biennial Oscillations in the Geoengineering Model Intercomparison Project (GeoMIP) G6sulfur experiment |
title_short |
The impact of stratospheric aerosol intervention on the North Atlantic and Quasi-Biennial Oscillations in the Geoengineering Model Intercomparison Project (GeoMIP) G6sulfur experiment |
title_full |
The impact of stratospheric aerosol intervention on the North Atlantic and Quasi-Biennial Oscillations in the Geoengineering Model Intercomparison Project (GeoMIP) G6sulfur experiment |
title_fullStr |
The impact of stratospheric aerosol intervention on the North Atlantic and Quasi-Biennial Oscillations in the Geoengineering Model Intercomparison Project (GeoMIP) G6sulfur experiment |
title_full_unstemmed |
The impact of stratospheric aerosol intervention on the North Atlantic and Quasi-Biennial Oscillations in the Geoengineering Model Intercomparison Project (GeoMIP) G6sulfur experiment |
title_sort |
impact of stratospheric aerosol intervention on the north atlantic and quasi-biennial oscillations in the geoengineering model intercomparison project (geomip) g6sulfur experiment |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://insu.hal.science/insu-03617467 https://insu.hal.science/insu-03617467/document https://insu.hal.science/insu-03617467/file/acp-22-2999-2022.pdf https://doi.org/10.5194/acp-22-2999-2022 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://insu.hal.science/insu-03617467 Atmospheric Chemistry and Physics, 2022, 22 (5), pp.2999-3016. ⟨10.5194/acp-22-2999-2022⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-22-2999-2022 insu-03617467 https://insu.hal.science/insu-03617467 https://insu.hal.science/insu-03617467/document https://insu.hal.science/insu-03617467/file/acp-22-2999-2022.pdf doi:10.5194/acp-22-2999-2022 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-22-2999-2022 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
22 |
container_issue |
5 |
container_start_page |
2999 |
op_container_end_page |
3016 |
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1810462551185555456 |
spelling |
ftanrparis:oai:HAL:insu-03617467v1 2024-09-15T18:22:38+00:00 The impact of stratospheric aerosol intervention on the North Atlantic and Quasi-Biennial Oscillations in the Geoengineering Model Intercomparison Project (GeoMIP) G6sulfur experiment Jones, Andy Haywood, Jim Scaife, Adam Boucher, Olivier Henry, Matthew Kravitz, Ben Lurton, Thibaut Nabat, Pierre Niemeier, Ulrike Séférian, Roland Tilmes, Simone Visioni, Daniele Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Groupe de Météorologie de Grande Échelle et Climat (GMGEC) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) ANR-11-IDEX-0004,SUPER,Sorbonne Universités à Paris pour l'Enseignement et la Recherche(2011) ANR-17-EURE-0006,IPSL-CGS,IPSL Climate graduate school(2017) 2022 https://insu.hal.science/insu-03617467 https://insu.hal.science/insu-03617467/document https://insu.hal.science/insu-03617467/file/acp-22-2999-2022.pdf https://doi.org/10.5194/acp-22-2999-2022 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-22-2999-2022 insu-03617467 https://insu.hal.science/insu-03617467 https://insu.hal.science/insu-03617467/document https://insu.hal.science/insu-03617467/file/acp-22-2999-2022.pdf doi:10.5194/acp-22-2999-2022 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://insu.hal.science/insu-03617467 Atmospheric Chemistry and Physics, 2022, 22 (5), pp.2999-3016. ⟨10.5194/acp-22-2999-2022⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2022 ftanrparis https://doi.org/10.5194/acp-22-2999-2022 2024-08-07T23:32:49Z International audience Abstract. As part of the Geoengineering Model Intercomparison Project a numerical experiment known as G6sulfur has been designed in which temperatures under a high-forcing future scenario (SSP5-8.5) are reduced to those under a medium-forcing scenario (SSP2-4.5) using the proposed geoengineering technique of stratospheric aerosol intervention (SAI). G6sulfur involves introducing sulfuric acid aerosol into the tropical stratosphere where it reflects incoming sunlight back to space, thus cooling the planet. Here, we compare the results from six Earth-system models that have performed the G6sulfur experiment and examine how SAI affects two important modes of natural variability, the northern wintertime North Atlantic Oscillation (NAO) and the Quasi-Biennial Oscillation (QBO). Although all models show that SAI is successful in reducing global mean temperature as designed, they are also consistent in showing that it forces an increasingly positive phase of the NAO as the injection rate increases over the course of the 21st century, exacerbating precipitation reductions over parts of southern Europe compared with SSP5-8.5. In contrast to the robust result for the NAO, there is less consistency for the impact on the QBO, but the results nevertheless indicate a risk that equatorial SAI could cause the QBO to stall and become locked in a phase with permanent westerly winds in the lower stratosphere. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Portail HAL-ANR (Agence Nationale de la Recherche) Atmospheric Chemistry and Physics 22 5 2999 3016 |