North Atlantic Oscillation in winter is largely insensitive to autumn Barents-Kara sea ice variability
Arctic sea ice extent in autumn is significantly correlated with the winter North Atlantic Oscillation (NAO) in the satellite era. However, questions about the robustness and reproducibility of the relationship persist. Here, we show that climate models are able to simulate periods of strong ice-NAO...
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ftdatacite:10.7916/d8-avfe-k173 2023-05-15T15:04:36+02:00 North Atlantic Oscillation in winter is largely insensitive to autumn Barents-Kara sea ice variability Yu Feng Siew, Peter Li, Camille Ting, Mingfang Sobolowski, Stefan P. Wu, Yutian Chen, Xiaodan 2021 https://dx.doi.org/10.7916/d8-avfe-k173 https://academiccommons.columbia.edu/doi/10.7916/d8-avfe-k173 unknown Columbia University https://dx.doi.org/10.1126/sciadv.abg4893 North Atlantic oscillation Sea ice Climatology Text Articles article-journal ScholarlyArticle 2021 ftdatacite https://doi.org/10.7916/d8-avfe-k173 https://doi.org/10.1126/sciadv.abg4893 2021-11-05T12:55:41Z Arctic sea ice extent in autumn is significantly correlated with the winter North Atlantic Oscillation (NAO) in the satellite era. However, questions about the robustness and reproducibility of the relationship persist. Here, we show that climate models are able to simulate periods of strong ice-NAO correlation, albeit rarely. Furthermore, we show that the winter circulation signals during these periods are consistent with observations and not driven by sea ice. We do so by interrogating a multimodel ensemble for the specific time scale of interest, thereby illuminating the dynamics that produce large spread in the ice-NAO relationship. Our results support the importance of internal variability over sea ice but go further in showing that the mechanism behind strong ice-NAO correlations, when they occur, is similar in longer observational records and models. Rather than sea ice, circulation anomalies over the Urals emerge as a decisive precursor to the winter NAO signal. Text Arctic Kara Sea North Atlantic North Atlantic oscillation Sea ice DataCite Metadata Store (German National Library of Science and Technology) Arctic Kara Sea |
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DataCite Metadata Store (German National Library of Science and Technology) |
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language |
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topic |
North Atlantic oscillation Sea ice Climatology |
spellingShingle |
North Atlantic oscillation Sea ice Climatology Yu Feng Siew, Peter Li, Camille Ting, Mingfang Sobolowski, Stefan P. Wu, Yutian Chen, Xiaodan North Atlantic Oscillation in winter is largely insensitive to autumn Barents-Kara sea ice variability |
topic_facet |
North Atlantic oscillation Sea ice Climatology |
description |
Arctic sea ice extent in autumn is significantly correlated with the winter North Atlantic Oscillation (NAO) in the satellite era. However, questions about the robustness and reproducibility of the relationship persist. Here, we show that climate models are able to simulate periods of strong ice-NAO correlation, albeit rarely. Furthermore, we show that the winter circulation signals during these periods are consistent with observations and not driven by sea ice. We do so by interrogating a multimodel ensemble for the specific time scale of interest, thereby illuminating the dynamics that produce large spread in the ice-NAO relationship. Our results support the importance of internal variability over sea ice but go further in showing that the mechanism behind strong ice-NAO correlations, when they occur, is similar in longer observational records and models. Rather than sea ice, circulation anomalies over the Urals emerge as a decisive precursor to the winter NAO signal. |
format |
Text |
author |
Yu Feng Siew, Peter Li, Camille Ting, Mingfang Sobolowski, Stefan P. Wu, Yutian Chen, Xiaodan |
author_facet |
Yu Feng Siew, Peter Li, Camille Ting, Mingfang Sobolowski, Stefan P. Wu, Yutian Chen, Xiaodan |
author_sort |
Yu Feng Siew, Peter |
title |
North Atlantic Oscillation in winter is largely insensitive to autumn Barents-Kara sea ice variability |
title_short |
North Atlantic Oscillation in winter is largely insensitive to autumn Barents-Kara sea ice variability |
title_full |
North Atlantic Oscillation in winter is largely insensitive to autumn Barents-Kara sea ice variability |
title_fullStr |
North Atlantic Oscillation in winter is largely insensitive to autumn Barents-Kara sea ice variability |
title_full_unstemmed |
North Atlantic Oscillation in winter is largely insensitive to autumn Barents-Kara sea ice variability |
title_sort |
north atlantic oscillation in winter is largely insensitive to autumn barents-kara sea ice variability |
publisher |
Columbia University |
publishDate |
2021 |
url |
https://dx.doi.org/10.7916/d8-avfe-k173 https://academiccommons.columbia.edu/doi/10.7916/d8-avfe-k173 |
geographic |
Arctic Kara Sea |
geographic_facet |
Arctic Kara Sea |
genre |
Arctic Kara Sea North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Arctic Kara Sea North Atlantic North Atlantic oscillation Sea ice |
op_relation |
https://dx.doi.org/10.1126/sciadv.abg4893 |
op_doi |
https://doi.org/10.7916/d8-avfe-k173 https://doi.org/10.1126/sciadv.abg4893 |
_version_ |
1766336341076869120 |