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dc.contributor.authorFriedel, Marina-
dc.contributor.authorChiodo, Gabriel-
dc.contributor.authorStenke, Andrea-
dc.contributor.authorDomeisen, Daniela-
dc.contributor.authorMuthers, Stefan-
dc.contributor.authorAnet, Julien-
dc.contributor.authorPeter, Thomas-
dc.date.accessioned2021-04-29T10:32:43Z-
dc.date.available2021-04-29T10:32:43Z-
dc.date.issued2021-
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/22383-
dc.description.abstractLinks between springtime Arctic stratospheric ozone anomalies and anomalous surface weather in the Northern Hemisphere have been found recently. Stratospheric ozone thus provides valuable information which may help to improve seasonal predictability. However, the extent and causality of the ozone-surface climate coupling remain unclear and many state-of-the-art forecast models lack any representation of ozone feedbacks on planetary circulation. We investigate the importance of the ozone-surface climate coupling with two Chemistry Climate Models, contrasting simulations with fully interactive ozone against prescribed zonally averaged climatological ozone under fixed present-day boundary conditions. We focus on springtime Arctic ozone minima and compare subsequent surface patterns in runs with and without interactive ozone, thus rendering a detailed and physically-based quantification of the stratospheric ozone impact on surface climate possible. All model simulations show a connection between Arctic ozone minima and a positive phase of the Arctic Oscillation in the month after the depletion in spring. Runs with interactive ozone chemistry show an amplified surface response and a 40% stronger Arctic Oscillation index after ozone depletion. This amplified Arctic Oscillation goes along with enhanced positive surface temperature anomalies over Eurasia. Moreover, composite surface patterns after spring ozone minima in model simulations with interactive ozone show a better agreement with composites in reanalysis data compared to runs with prescribed ozone. Mechanisms whereby stratospheric ozone affects both the stratospheric and tropospheric circulation are explored. These include the reduction of short-wave heating over the pole due to ozone loss, thus amplifying stratospheric temperature anomalies and allowing for an intensification of the polar vortex with subsequent impacts on wave propagation and the stratospheric meridional circulation. This suggests that ozone is not only passively responding to stratospheric dynamics, but actively feeds back into the circulation. Following these results, stratospheric ozone anomalies actively contribute to anomalous surface weather in spring, emphasizing the potential importance of interactive ozone chemistry for seasonal predictions.de_CH
dc.language.isoende_CH
dc.publisherEuropean Geosciences Unionde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subject.ddc551: Geologie und Hydrologiede_CH
dc.titleThe influence of ozone feedbacks on surface climate following spring arctic ozone depletionde_CH
dc.typeKonferenz: Posterde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitZentrum für Aviatik (ZAV)de_CH
dc.identifier.doi10.5194/egusphere-egu21-12668de_CH
zhaw.conference.detailsEGU General Assembly 2021, Online, 19-30 April 2021de_CH
zhaw.funding.euNode_CH
zhaw.originated.zhawYesde_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.publication.reviewNot specifiedde_CH
zhaw.webfeedMeteorology, Environment and Air Traffic (ZAV)de_CH
zhaw.author.additionalNode_CH
zhaw.display.portraitYesde_CH
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Friedel, M., Chiodo, G., Stenke, A., Domeisen, D., Muthers, S., Anet, J., & Peter, T. (2021). The influence of ozone feedbacks on surface climate following spring arctic ozone depletion. EGU General Assembly 2021, Online, 19-30 April 2021. https://doi.org/10.5194/egusphere-egu21-12668
Friedel, M. et al. (2021) ‘The influence of ozone feedbacks on surface climate following spring arctic ozone depletion’, in EGU General Assembly 2021, Online, 19-30 April 2021. European Geosciences Union. Available at: https://doi.org/10.5194/egusphere-egu21-12668.
M. Friedel et al., “The influence of ozone feedbacks on surface climate following spring arctic ozone depletion,” in EGU General Assembly 2021, Online, 19-30 April 2021, 2021. doi: 10.5194/egusphere-egu21-12668.
FRIEDEL, Marina, Gabriel CHIODO, Andrea STENKE, Daniela DOMEISEN, Stefan MUTHERS, Julien ANET und Thomas PETER, 2021. The influence of ozone feedbacks on surface climate following spring arctic ozone depletion. In: EGU General Assembly 2021, Online, 19-30 April 2021. Conference poster. European Geosciences Union. 2021
Friedel, Marina, Gabriel Chiodo, Andrea Stenke, Daniela Domeisen, Stefan Muthers, Julien Anet, and Thomas Peter. 2021. “The Influence of Ozone Feedbacks on Surface Climate Following Spring Arctic Ozone Depletion.” Conference poster. In EGU General Assembly 2021, Online, 19-30 April 2021. European Geosciences Union. https://doi.org/10.5194/egusphere-egu21-12668.
Friedel, Marina, et al. “The Influence of Ozone Feedbacks on Surface Climate Following Spring Arctic Ozone Depletion.” EGU General Assembly 2021, Online, 19-30 April 2021, European Geosciences Union, 2021, https://doi.org/10.5194/egusphere-egu21-12668.


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