Articles | Volume 22, issue 8
Atmos. Chem. Phys., 22, 5559–5576, 2022
https://doi.org/10.5194/acp-22-5559-2022

Special issue: The SPARC Reanalysis Intercomparison Project (S-RIP) (ACP/ESSD...

Atmos. Chem. Phys., 22, 5559–5576, 2022
https://doi.org/10.5194/acp-22-5559-2022
Research article
27 Apr 2022
Research article | 27 Apr 2022

Hemispheric asymmetries in recent changes in the stratospheric circulation

Felix Ploeger and Hella Garny

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Short summary
We investigate hemispheric asymmetries in stratospheric circulation changes in the last 2 decades in model simulations and atmospheric observations. We find that observed trace gas changes can be explained by a structural circulation change related to a deepening circulation in the Northern Hemisphere relative to the Southern Hemisphere. As this asymmetric signal is small compared to internal variability observed circulation trends over the recent past are not in contradiction to climate models.
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