Articles | Volume 3, issue 2
https://doi.org/10.5194/wcd-3-449-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wcd-3-449-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Apr 2022
Research article |
| 08 Apr 2022
| 08 Apr 2022
Circumglobal Rossby wave patterns during boreal winter highlighted by space–time spectral analysis
Laboratoire de Météorologie Dynamique/IPSL, École Normale Supérieure, PSL Université, Sorbonne Université, École Polytechnique, IP Paris, CNRS, Paris, France
Department of Earth Sciences, Uppsala University, Uppsala, Sweden
Efi Rousi
Potsdam Institute for Climate Impact Research (PIK), Leibniz Association, Potsdam, Germany
Fabio D'Andrea
Laboratoire de Météorologie Dynamique/IPSL, École Normale Supérieure, PSL Université, Sorbonne Université, École Polytechnique, IP Paris, CNRS, Paris, France
Gwendal Rivière
Laboratoire de Météorologie Dynamique/IPSL, École Normale Supérieure, PSL Université, Sorbonne Université, École Polytechnique, IP Paris, CNRS, Paris, France
François Lott
Laboratoire de Météorologie Dynamique/IPSL, École Normale Supérieure, PSL Université, Sorbonne Université, École Polytechnique, IP Paris, CNRS, Paris, France
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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.
A revisited space and time spectral decomposition allows us to determine which harmonics...
