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

Lindgren, Erik A.; Sheshadri, Aditi

doi:https://doi.org/10.5194/wcd-1-93-2020

Articles | Volume 1, issue 1

https://doi.org/10.5194/wcd-1-93-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/wcd-1-93-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 1, issue 1

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

Supplement

https://doi.org/10.5194/wcd-1-93-2020-supplement

Data sets

Data for "The Role of Wave-Wave Interactions in Sudden Stratospheric Warming Formation" E. A. Lindgren https://doi.org/10.17605/OSF.IO/PR63B

Video supplement

Supplemental movies for "The Role of Wave-Wave Interactions in Sudden Stratospheric Warming Formation" E. A. Lindgren https://doi.org/10.17605/OSF.IO/3VRME

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.