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Publikationstyp: Beitrag in wissenschaftlicher Zeitschrift
Art der Begutachtung: Peer review (Publikation)
Titel: Springtime arctic ozone depletion forces northern hemisphere climate anomalies
Autor/-in: Friedel, Marina
Chiodo, Gabriel
Stenke, Andrea
Domeisen, Daniela I. V.
Fueglistaler, Stephan
Anet, Julien G.
Peter, Thomas
et. al: No
DOI: 10.1038/s41561-022-00974-7
10.21256/zhaw-25302
Erschienen in: Nature Geoscience
Band(Heft): 15
Heft: 7
Seite(n): 541
Seiten bis: 547
Erscheinungsdatum: 7-Jul-2022
Verlag / Hrsg. Institution: Nature Publishing Group
ISSN: 1752-0894
1752-0908
Sprache: Englisch
Schlagwörter: Atmospheric chemistry; Atmospheric dynamics
Fachgebiet (DDC): 551: Geologie und Hydrologie
Zusammenfassung: Large-scale chemical depletion of ozone due to anthropogenic emissions occurs over Antarctica as well as, to a lesser degree, the Arctic. Surface climate predictability in the Northern Hemisphere might be improved due to a previously proposed, albeit uncertain, link to springtime ozone depletion in the Arctic. Here we use observations and targeted chemistry–climate experiments from two models to isolate the surface impacts of ozone depletion from complex downward dynamical influences. We find that springtime stratospheric ozone depletion is consistently followed by surface temperature and precipitation anomalies with signs consistent with a positive Arctic Oscillation, namely, warm and dry conditions over southern Europe and Eurasia and moistening over northern Europe. Notably, we show that these anomalies, affecting large portions of the Northern Hemisphere, are driven substantially by the loss of stratospheric ozone. This is due to ozone depletion leading to a reduction in short-wave radiation absorption, when in turn causing persistent negative temperature anomalies in the lower stratosphere and a delayed break-up of the polar vortex. These results indicate that the inclusion of interactive ozone chemistry in atmospheric models can considerably improve the predictability of Northern Hemisphere surface climate on seasonal timescales.
URI: https://digitalcollection.zhaw.ch/handle/11475/25302
Volltext Version: Akzeptierte Version
Lizenz (gemäss Verlagsvertrag): Lizenz gemäss Verlagsvertrag
Gesperrt bis: 2023-01-07
Departement: School of Engineering
Organisationseinheit: Zentrum für Aviatik (ZAV)
Enthalten in den Sammlungen:Publikationen School of Engineering

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