Articles | Volume 1, issue 1
Weather Clim. Dynam., 1, 93–109, 2020
https://doi.org/10.5194/wcd-1-93-2020
Weather Clim. Dynam., 1, 93–109, 2020
https://doi.org/10.5194/wcd-1-93-2020

Research article 10 Mar 2020

Research article | 10 Mar 2020

The role of wave–wave interactions in sudden stratospheric warming formation

Erik A. Lindgren and Aditi Sheshadri

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AR by Anna Mirena Feist-Polner on behalf of the Authors (06 Jan 2020)  Author's response
ED: Publish subject to minor revisions (review by editor) (23 Jan 2020) by Thomas Birner
AR by Erik Lindgren on behalf of the Authors (29 Jan 2020)  Author's response    Manuscript
ED: Publish as is (19 Feb 2020) by Thomas Birner
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Short summary
Sudden stratospheric warmings (SSWs) are extreme events that influence surface weather up to 2 months after onset. We remove wave–wave interactions (WWIs) in vertical sections of a general circulation model to investigate the role of WWIs in SSW formation. We show that the effects of WWIs depend strongly on the pressure levels where they occur and the zonal structure of the wave forcing in the troposphere. Our results highlight the importance of upper-level processes in stratospheric dynamics.