Trends in the occurrence of pan‐Arctic warm extremes in the past four decades
Abstract The most recent historic heat wave in Siberia with record‐shattering temperatures is a reflection that, as a manifestation of global warming, the Arctic is experiencing more frequent and severe warm‐temperature extremes that could have global consequences. Here, we apply the self‐organizing...
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crwiley:10.1002/joc.7069 2024-06-02T07:59:57+00:00 Trends in the occurrence of pan‐Arctic warm extremes in the past four decades Yu, Lejiang Zhong, Shiyuan Sun, Bo National Natural Science Foundation of China 2021 http://dx.doi.org/10.1002/joc.7069 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7069 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7069 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7069 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 41, issue 9, page 4460-4477 ISSN 0899-8418 1097-0088 journal-article 2021 crwiley https://doi.org/10.1002/joc.7069 2024-05-03T10:43:29Z Abstract The most recent historic heat wave in Siberia with record‐shattering temperatures is a reflection that, as a manifestation of global warming, the Arctic is experiencing more frequent and severe warm‐temperature extremes that could have global consequences. Here, we apply the self‐organizing map (SOM) clustering method to 6‐hr data from ERA‐Interim from 1979 to 2017 to document the spatial and seasonal variations of the trends in the number of warm‐extreme days over the pan‐Arctic region, and to apportion the trends into a dynamic component representing changes in atmospheric circulation patterns, a thermodynamic component not directly related to circulations, and an interaction component. We show significant upward trends in the occurrence of warm extremes across much of the Arctic Ocean in all seasons except for summer when regions of significant upward trends move from the Arctic Ocean to the Canadian Arctic Archipelago, Greenland, and the northern North Atlantic. The direction and magnitude of the trends in seasonal warm extremes as well as their seasonal and spatial variations are dominated by the thermodynamic component, with the dynamic component and the interaction component at least an order of magnitude smaller. Although negligible to the long‐term, pan‐Arctic averaged trend, the dynamic component may be comparable with, or even larger than, the thermodynamic component at some locations and under certain atmospheric circulation patterns. Article in Journal/Newspaper Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago Global warming Greenland North Atlantic Siberia Wiley Online Library Arctic Arctic Ocean Canadian Arctic Archipelago Greenland International Journal of Climatology |
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Wiley Online Library |
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English |
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Abstract The most recent historic heat wave in Siberia with record‐shattering temperatures is a reflection that, as a manifestation of global warming, the Arctic is experiencing more frequent and severe warm‐temperature extremes that could have global consequences. Here, we apply the self‐organizing map (SOM) clustering method to 6‐hr data from ERA‐Interim from 1979 to 2017 to document the spatial and seasonal variations of the trends in the number of warm‐extreme days over the pan‐Arctic region, and to apportion the trends into a dynamic component representing changes in atmospheric circulation patterns, a thermodynamic component not directly related to circulations, and an interaction component. We show significant upward trends in the occurrence of warm extremes across much of the Arctic Ocean in all seasons except for summer when regions of significant upward trends move from the Arctic Ocean to the Canadian Arctic Archipelago, Greenland, and the northern North Atlantic. The direction and magnitude of the trends in seasonal warm extremes as well as their seasonal and spatial variations are dominated by the thermodynamic component, with the dynamic component and the interaction component at least an order of magnitude smaller. Although negligible to the long‐term, pan‐Arctic averaged trend, the dynamic component may be comparable with, or even larger than, the thermodynamic component at some locations and under certain atmospheric circulation patterns. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Yu, Lejiang Zhong, Shiyuan Sun, Bo |
spellingShingle |
Yu, Lejiang Zhong, Shiyuan Sun, Bo Trends in the occurrence of pan‐Arctic warm extremes in the past four decades |
author_facet |
Yu, Lejiang Zhong, Shiyuan Sun, Bo |
author_sort |
Yu, Lejiang |
title |
Trends in the occurrence of pan‐Arctic warm extremes in the past four decades |
title_short |
Trends in the occurrence of pan‐Arctic warm extremes in the past four decades |
title_full |
Trends in the occurrence of pan‐Arctic warm extremes in the past four decades |
title_fullStr |
Trends in the occurrence of pan‐Arctic warm extremes in the past four decades |
title_full_unstemmed |
Trends in the occurrence of pan‐Arctic warm extremes in the past four decades |
title_sort |
trends in the occurrence of pan‐arctic warm extremes in the past four decades |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/joc.7069 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7069 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7069 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7069 |
geographic |
Arctic Arctic Ocean Canadian Arctic Archipelago Greenland |
geographic_facet |
Arctic Arctic Ocean Canadian Arctic Archipelago Greenland |
genre |
Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago Global warming Greenland North Atlantic Siberia |
genre_facet |
Arctic Archipelago Arctic Arctic Ocean Canadian Arctic Archipelago Global warming Greenland North Atlantic Siberia |
op_source |
International Journal of Climatology volume 41, issue 9, page 4460-4477 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.7069 |
container_title |
International Journal of Climatology |
_version_ |
1800743996243312640 |