Articles | Volume 3, issue 2
https://doi.org/10.5194/wcd-3-449-2022
https://doi.org/10.5194/wcd-3-449-2022
Research article
 | 
08 Apr 2022
Research article |  | 08 Apr 2022

Circumglobal Rossby wave patterns during boreal winter highlighted by space–time spectral analysis

Jacopo Riboldi, Efi Rousi, Fabio D'Andrea, Gwendal Rivière, and François Lott

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Latest update: 14 Apr 2024
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Short summary
A revisited space and time spectral decomposition allows us to determine which harmonics dominate the upper-tropospheric flow evolution over a given time period as well as their propagation. This approach is used to identify Rossby wave patterns with a circumglobal extent, affecting weather evolution over different Northern Hemisphere regions. The results cast light on the processes originating and supporting these wave patterns, advocating at the same time for the usefulness of the technique.