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| Hauptseite > Publikationsdatenbank > Pathways of Influence Between Northern Hemisphere Blocking and Stratospheric Polar Vortex Variability > print |
| Hauptseite > Publikationsdatenbank > Pathways of Influence Between Northern Hemisphere Blocking and Stratospheric Polar Vortex Variability > print |
| 001 | 917179 | ||
| 005 | 20240712100817.0 | ||
| 024 | 7 | _ | |a 10.1029/2022GL100895 |2 doi |
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| 037 | _ | _ | |a FZJ-2023-00411 |
| 082 | _ | _ | |a 550 |
| 100 | 1 | _ | |a Yessimbet, Kamilya |0 0000-0001-8688-6655 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Pathways of Influence Between Northern Hemisphere Blocking and Stratospheric Polar Vortex Variability |
| 260 | _ | _ | |a Hoboken, NJ |c 2022 |b Wiley |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a We apply a causal inference-based framework to test and quantify previously suggested causalrelationships between Northern Hemisphere blocking, upward wave-activity fluxes and stratospheric polarvortex (SPV) variability using reanalysis data. We show that the influence of blocking on the polar vortex isentirely mediated by upward wave-activity fluxes, as the classical view would suggest. However, the causalpathway is not completely straightforward. In contrast to the vortex-weakening effect of European blocking,the vortex-strengthening effect of west Pacific blocking on lower stratospheric wave-activity fluxes is onlypartially mediated by upper tropospheric wave-activity fluxes. In addition, only two-thirds of the effectof upper tropospheric wave-activity fluxes on polar vortex variability is mediated by lower stratosphericwave-activity fluxes. We also show that sudden stratospheric warmings are not entirely explainable in terms ofupward wave-activity fluxes. These findings help clarify the pathways of influence between blocking and SPVvariability. |
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| 700 | 1 | _ | |a Ossó, Albert C. |0 0000-0001-5653-4886 |b 2 |
| 700 | 1 | _ | |a Steiner, Andrea K. |0 0000-0003-1201-3303 |b 3 |
| 773 | _ | _ | |a 10.1029/2022GL100895 |g Vol. 49, no. 23 |0 PERI:(DE-600)2021599-X |n 23 |p e2022GL100895 |t Geophysical research letters |v 49 |y 2022 |x 0094-8276 |
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