Enhanced stratosphere/troposphere coupling during extreme warm stratospheric events with strong polar-night jet oscillation
dc.bibliographicCitation.firstPage | 467 | eng |
dc.bibliographicCitation.issue | 12 | eng |
dc.bibliographicCitation.journalTitle | Atmosphere | eng |
dc.bibliographicCitation.lastPage | 348 | eng |
dc.bibliographicCitation.volume | 9 | eng |
dc.contributor.author | Peters, D.H.W. | |
dc.contributor.author | Schneidereit, A. | |
dc.contributor.author | Karpechko, A.Y. | |
dc.date.accessioned | 2020-11-25T14:52:42Z | |
dc.date.available | 2020-11-25T14:52:42Z | |
dc.date.issued | 2018 | |
dc.description.abstract | Extreme warm stratospheric events during polar winters from ERA-Interim reanalysis and CMIP5-ESM-LR runs were separated by duration and strength of the polar-night jet oscillation (PJO) using a high statistical confidence level of three standard deviations (strong-PJO events). With a composite analysis, we demonstrate that strong-PJO events show a significantly stronger downward propagating signal in both, northern annular mode (NAM) and zonal mean zonal wind anomaly in the stratosphere in comparison with non-PJO events. The lower stratospheric EP-flux-divergence difference in ERA-Interim was stronger in comparison to long-term CMIP5-ESM-LR runs (by a factor of four). This suggests that stratosphere-troposphere coupling is stronger in ERA-Interim than in CMIP5-ESM-LR. During the 60 days following the central date (CD), the Arctic oscillation signal was more intense during strong-PJO events than during non-PJO events in ERA-Interim data in comparison to CMIP5-ESM-LR runs. During the 15-day phase after CD, strong PJO events had a significant increase in stratospheric ozone, upper tropospheric zonally asymmetric impact, and a regional surface impact in ERA-Interim. Finally, we conclude that the applied high statistical threshold gives a clearer separation of extreme warm stratospheric events into strong-PJO events and non-PJO events including their different downward propagating NAM signal and tropospheric impacts. © 2018 by the authors. | eng |
dc.description.fonds | Leibniz_Fonds | |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://doi.org/10.34657/4633 | |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/6004 | |
dc.language.iso | eng | eng |
dc.publisher | Basel : MDPI AG | eng |
dc.relation.doi | https://doi.org/10.3390/atmos9120467 | |
dc.relation.issn | 2073-4433 | |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject.ddc | 550 | eng |
dc.subject.other | Arctic oscillation | eng |
dc.subject.other | CMIP5 | eng |
dc.subject.other | EP-flux divergence | eng |
dc.subject.other | ERA-Interim | eng |
dc.subject.other | Major sudden stratospheric warmings | eng |
dc.subject.other | MPI-ESM-LR | eng |
dc.subject.other | Northern annular mode | eng |
dc.subject.other | Polar-night jet oscillation | eng |
dc.subject.other | Warm stratospheric events | eng |
dc.subject.other | Ozone layer | eng |
dc.subject.other | Troposphere | eng |
dc.subject.other | Arctic Oscillation | eng |
dc.subject.other | CMIP5 | eng |
dc.subject.other | Era interims | eng |
dc.subject.other | Flux divergences | eng |
dc.subject.other | Northern annular mode | eng |
dc.subject.other | Polar-night jet | eng |
dc.subject.other | Stratospheric warmings | eng |
dc.subject.other | Warm stratospheric events | eng |
dc.subject.other | Climate models | eng |
dc.subject.other | Arctic Oscillation | eng |
dc.subject.other | CMIP | eng |
dc.subject.other | coupling | eng |
dc.subject.other | extreme event | eng |
dc.subject.other | jet | eng |
dc.subject.other | stratosphere-troposphere interaction | eng |
dc.subject.other | sudden stratospheric warming | eng |
dc.subject.other | zonal wind | eng |
dc.title | Enhanced stratosphere/troposphere coupling during extreme warm stratospheric events with strong polar-night jet oscillation | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | IAP | eng |
wgl.subject | Geowissenschaften | eng |
wgl.type | Zeitschriftenartikel | eng |
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