Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 15
Articles | Volume 26, issue 15
https://doi.org/10.5194/acp-26-11255-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-11255-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 15
Research article
 | 
12 Aug 2026
Research article |  | 12 Aug 2026

The impact of model resolution on the North Atlantic multidecadal response to anthropogenic sulphate aerosols

Wah Kin Michael Lai, Jon Robson, Laura Wilcox, Nick Dunstone, and Rowan Sutton

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Short summary
In a climate model at two different resolutions, sulphate aerosols are shown to induce a fast cooling followed by a delayed warming in the subpolar North Atlantic. The delayed warming is stronger at higher resolution due to a stronger Atlantic Meridional Overturning Circulation (AMOC) response. This difference is due to the lower resolution model having more sea ice which insulates the ocean, showing that the North Atlantic response to external forcing is sensitive to regional differences.
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