The relationship between wintertime extreme temperature events north of 60°N and large‐scale atmospheric circulations
ABSTRACT The increased extreme warm and decreased extreme cold temperature events across the Arctic strongly influence the natural environment as well as the societal activities. This study investigates temporal and spatial variability of wintertime extreme high and low temperature events defined by...
Published in: | International Journal of Climatology |
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Online Access: | http://dx.doi.org/10.1002/joc.5024 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.5024 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5024 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.5024 https://rmets.onlinelibrary.wiley.com/doi/am-pdf/10.1002/joc.5024 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5024 |
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crwiley:10.1002/joc.5024 2024-09-15T18:38:03+00:00 The relationship between wintertime extreme temperature events north of 60°N and large‐scale atmospheric circulations Yu, Lejiang Sui, Cuijuan Lenschow, Donald H. Zhou, Mingyu National Science Foundation 2017 http://dx.doi.org/10.1002/joc.5024 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.5024 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5024 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.5024 https://rmets.onlinelibrary.wiley.com/doi/am-pdf/10.1002/joc.5024 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5024 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 37, issue S1, page 597-611 ISSN 0899-8418 1097-0088 journal-article 2017 crwiley https://doi.org/10.1002/joc.5024 2024-06-25T04:13:48Z ABSTRACT The increased extreme warm and decreased extreme cold temperature events across the Arctic strongly influence the natural environment as well as the societal activities. This study investigates temporal and spatial variability of wintertime extreme high and low temperature events defined by the 95 and 5% percentiles across the Arctic and subarctic regions, respectively (north of 60°N) using data from 238 stations in the Global Summary of the Day for the period 1979–2016. Empirical orthogonal function analyses indicate that the first modes (which account for 30–35% of the total variance) are out‐of‐phase between northern Europe, western and central Russia, and northeastern North America, and that this appears to be related to the Arctic Oscillation ( AO ) and the Northern Atlantic Oscillation. The second modes explain about 8% of the total variance. During the positive phase of the first and second modes the anomalous northeasterly and northerly winds decrease Arctic extreme high and increase extreme low temperature occurrences; while the anomalous southerly and southwesterly winds have the opposite effect. Symmetric and asymmetric effects of the AO index on extreme temperature events refer to the difference and sum between the composite of its positive and negative phases. The symmetric components of the spatial patterns are similar to those of the first modes. The asymmetric components occur mainly over western and central Russia for extreme high and low temperatures, respectively. In addition the impacts of six other large‐scale climate modes are also explored. Article in Journal/Newspaper Subarctic Wiley Online Library International Journal of Climatology 37 S1 597 611 |
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Wiley Online Library |
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English |
description |
ABSTRACT The increased extreme warm and decreased extreme cold temperature events across the Arctic strongly influence the natural environment as well as the societal activities. This study investigates temporal and spatial variability of wintertime extreme high and low temperature events defined by the 95 and 5% percentiles across the Arctic and subarctic regions, respectively (north of 60°N) using data from 238 stations in the Global Summary of the Day for the period 1979–2016. Empirical orthogonal function analyses indicate that the first modes (which account for 30–35% of the total variance) are out‐of‐phase between northern Europe, western and central Russia, and northeastern North America, and that this appears to be related to the Arctic Oscillation ( AO ) and the Northern Atlantic Oscillation. The second modes explain about 8% of the total variance. During the positive phase of the first and second modes the anomalous northeasterly and northerly winds decrease Arctic extreme high and increase extreme low temperature occurrences; while the anomalous southerly and southwesterly winds have the opposite effect. Symmetric and asymmetric effects of the AO index on extreme temperature events refer to the difference and sum between the composite of its positive and negative phases. The symmetric components of the spatial patterns are similar to those of the first modes. The asymmetric components occur mainly over western and central Russia for extreme high and low temperatures, respectively. In addition the impacts of six other large‐scale climate modes are also explored. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Yu, Lejiang Sui, Cuijuan Lenschow, Donald H. Zhou, Mingyu |
spellingShingle |
Yu, Lejiang Sui, Cuijuan Lenschow, Donald H. Zhou, Mingyu The relationship between wintertime extreme temperature events north of 60°N and large‐scale atmospheric circulations |
author_facet |
Yu, Lejiang Sui, Cuijuan Lenschow, Donald H. Zhou, Mingyu |
author_sort |
Yu, Lejiang |
title |
The relationship between wintertime extreme temperature events north of 60°N and large‐scale atmospheric circulations |
title_short |
The relationship between wintertime extreme temperature events north of 60°N and large‐scale atmospheric circulations |
title_full |
The relationship between wintertime extreme temperature events north of 60°N and large‐scale atmospheric circulations |
title_fullStr |
The relationship between wintertime extreme temperature events north of 60°N and large‐scale atmospheric circulations |
title_full_unstemmed |
The relationship between wintertime extreme temperature events north of 60°N and large‐scale atmospheric circulations |
title_sort |
relationship between wintertime extreme temperature events north of 60°n and large‐scale atmospheric circulations |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1002/joc.5024 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.5024 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5024 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.5024 https://rmets.onlinelibrary.wiley.com/doi/am-pdf/10.1002/joc.5024 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5024 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
International Journal of Climatology volume 37, issue S1, page 597-611 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.5024 |
container_title |
International Journal of Climatology |
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37 |
container_issue |
S1 |
container_start_page |
597 |
op_container_end_page |
611 |
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1810482377836724224 |