Springtime arctic ozone depletion forces northern hemisphere climate anomalies
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...
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Online Access: | https://doi.org/10.1038/s41561-022-00974-7 |
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fteawag:oai:dora:eawag_25202 2023-06-18T03:38:07+02:00 Springtime arctic ozone depletion forces northern hemisphere climate anomalies Friedel, Marina Chiodo, Gabriel Stenke, Andrea Domeisen, Daniela I.V. Fueglistaler, Stephan Anet, Julien G. Peter, Thomas 2022 https://doi.org/10.1038/s41561-022-00974-7 eng eng Springer Nature Nature Geoscience--Nat. Geosci.--journals:2182--1752-0894--1752-0908 eawag:25202 doi:10.1038/s41561-022-00974-7 scopus: 2-s2.0-85133595901 journal id: journals:2182 issn: 1752-0894 e-issn: 1752-0908 ut: 000824755900010 Journal Article Text 2022 fteawag https://doi.org/10.1038/s41561-022-00974-7 2023-06-04T23:49:55Z 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. Article in Journal/Newspaper Antarc* Antarctica Arctic DORA Eawag Arctic Nature Geoscience 15 7 541 547 |
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English |
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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. |
format |
Article in Journal/Newspaper |
author |
Friedel, Marina Chiodo, Gabriel Stenke, Andrea Domeisen, Daniela I.V. Fueglistaler, Stephan Anet, Julien G. Peter, Thomas |
spellingShingle |
Friedel, Marina Chiodo, Gabriel Stenke, Andrea Domeisen, Daniela I.V. Fueglistaler, Stephan Anet, Julien G. Peter, Thomas Springtime arctic ozone depletion forces northern hemisphere climate anomalies |
author_facet |
Friedel, Marina Chiodo, Gabriel Stenke, Andrea Domeisen, Daniela I.V. Fueglistaler, Stephan Anet, Julien G. Peter, Thomas |
author_sort |
Friedel, Marina |
title |
Springtime arctic ozone depletion forces northern hemisphere climate anomalies |
title_short |
Springtime arctic ozone depletion forces northern hemisphere climate anomalies |
title_full |
Springtime arctic ozone depletion forces northern hemisphere climate anomalies |
title_fullStr |
Springtime arctic ozone depletion forces northern hemisphere climate anomalies |
title_full_unstemmed |
Springtime arctic ozone depletion forces northern hemisphere climate anomalies |
title_sort |
springtime arctic ozone depletion forces northern hemisphere climate anomalies |
publisher |
Springer Nature |
publishDate |
2022 |
url |
https://doi.org/10.1038/s41561-022-00974-7 |
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Arctic |
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Arctic |
genre |
Antarc* Antarctica Arctic |
genre_facet |
Antarc* Antarctica Arctic |
op_relation |
Nature Geoscience--Nat. Geosci.--journals:2182--1752-0894--1752-0908 eawag:25202 doi:10.1038/s41561-022-00974-7 scopus: 2-s2.0-85133595901 journal id: journals:2182 issn: 1752-0894 e-issn: 1752-0908 ut: 000824755900010 |
op_doi |
https://doi.org/10.1038/s41561-022-00974-7 |
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Nature Geoscience |
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15 |
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7 |
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541 |
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547 |
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1769002959334539264 |