Articles | Volume 1, issue 1
https://doi.org/10.5194/wcd-1-93-2020
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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Cited articles

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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.