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 M.; Scaife, Adam A.; Boucher, Olivier; Henry, Matthew; Kravitz, Ben; Lurton, Thibaut; Nabat, Pierre; Niemeier, Ulrike; Séférian, Roland; Tilmes, Simone; Visioni, Daniele

doi:https://doi.org/10.5194/acp-22-2999-2022

Articles | Volume 22, issue 5

Atmos. Chem. Phys., 22, 2999–3016, 2022

https://doi.org/10.5194/acp-22-2999-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Resolving uncertainties in solar geoengineering through multi-model...

Atmos. Chem. Phys., 22, 2999–3016, 2022

https://doi.org/10.5194/acp-22-2999-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 5

Research article

| Highlight paper

07 Mar 2022

Research article | Highlight paper | 07 Mar 2022

The impact of stratospheric aerosol intervention on the North Atlantic and Quasi-Biennial Oscillations in the Geoengineering Model Intercomparison Project (GeoMIP) G6sulfur experiment

Andy Jones et al.

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Month	HTML	PDF	XML	Total
Nov 2021	246	64	6	316
Dec 2021	59	54	3	116
Jan 2022	107	50	9	166
Feb 2022	30	10	3	43
Mar 2022	404	89	4	497
Apr 2022	220	45	4	269
May 2022	156	32	3	191
Jun 2022	164	25	1	190
Jul 2022	232	42	1	275
Aug 2022	163	38	1	202
Sep 2022	123	41	0	164
Oct 2022	188	46	2	236
Nov 2022	184	28	0	212
Dec 2022	187	23	1	211
Jan 2023	72	53	1	126
Feb 2023	3	0	3

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Short summary

Simulations by six Earth-system models of geoengineering by introducing sulfuric acid aerosols into the tropical stratosphere are compared. A robust impact on the northern wintertime North Atlantic Oscillation is found, exacerbating precipitation reduction over parts of southern Europe. In contrast, the models show no consistency with regard to impacts on the Quasi-Biennial Oscillation, although results do indicate a risk that the oscillation could become locked into a permanent westerly phase.


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