Subseasonal relationship between Arctic and Eurasian surface air temperature
Abstract The subseasonal relationship between Arctic and Eurasian surface air temperature (SAT) is re-examined using reanalysis data. Consistent with previous studies, a significant negative correlation is observed in cold season from November to February, but with a local minimum in late December....
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ftdoajarticles:oai:doaj.org/article:1ea4c995b2674b1d83d62b573d551c06 2023-05-15T14:35:59+02:00 Subseasonal relationship between Arctic and Eurasian surface air temperature Hye-Jin Kim Seok-Woo Son Woosok Moon Jong-Seong Kug Jaeyoung Hwang 2021-02-01T00:00:00Z https://doi.org/10.1038/s41598-021-83486-5 https://doaj.org/article/1ea4c995b2674b1d83d62b573d551c06 EN eng Nature Portfolio https://doi.org/10.1038/s41598-021-83486-5 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-021-83486-5 2045-2322 https://doaj.org/article/1ea4c995b2674b1d83d62b573d551c06 Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021) Medicine R Science Q article 2021 ftdoajarticles https://doi.org/10.1038/s41598-021-83486-5 2022-12-31T09:18:36Z Abstract The subseasonal relationship between Arctic and Eurasian surface air temperature (SAT) is re-examined using reanalysis data. Consistent with previous studies, a significant negative correlation is observed in cold season from November to February, but with a local minimum in late December. This relationship is dominated not only by the warm Arctic-cold Eurasia (WACE) pattern, which becomes more frequent during the last two decades, but also by the cold Arctic-warm Eurasia (CAWE) pattern. The budget analyses reveal that both WACE and CAWE patterns are primarily driven by the temperature advection associated with sea level pressure anomaly over the Ural region, partly cancelled by the diabatic heating. It is further found that, although the anticyclonic anomaly of WACE pattern mostly represents the Ural blocking, about 20% of WACE cases are associated with non-blocking high pressure systems. This result indicates that the Ural blocking is not a necessary condition for the WACE pattern, highlighting the importance of transient weather systems in the subseasonal Arctic-Eurasian SAT co-variability. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Scientific Reports 11 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Hye-Jin Kim Seok-Woo Son Woosok Moon Jong-Seong Kug Jaeyoung Hwang Subseasonal relationship between Arctic and Eurasian surface air temperature |
topic_facet |
Medicine R Science Q |
description |
Abstract The subseasonal relationship between Arctic and Eurasian surface air temperature (SAT) is re-examined using reanalysis data. Consistent with previous studies, a significant negative correlation is observed in cold season from November to February, but with a local minimum in late December. This relationship is dominated not only by the warm Arctic-cold Eurasia (WACE) pattern, which becomes more frequent during the last two decades, but also by the cold Arctic-warm Eurasia (CAWE) pattern. The budget analyses reveal that both WACE and CAWE patterns are primarily driven by the temperature advection associated with sea level pressure anomaly over the Ural region, partly cancelled by the diabatic heating. It is further found that, although the anticyclonic anomaly of WACE pattern mostly represents the Ural blocking, about 20% of WACE cases are associated with non-blocking high pressure systems. This result indicates that the Ural blocking is not a necessary condition for the WACE pattern, highlighting the importance of transient weather systems in the subseasonal Arctic-Eurasian SAT co-variability. |
format |
Article in Journal/Newspaper |
author |
Hye-Jin Kim Seok-Woo Son Woosok Moon Jong-Seong Kug Jaeyoung Hwang |
author_facet |
Hye-Jin Kim Seok-Woo Son Woosok Moon Jong-Seong Kug Jaeyoung Hwang |
author_sort |
Hye-Jin Kim |
title |
Subseasonal relationship between Arctic and Eurasian surface air temperature |
title_short |
Subseasonal relationship between Arctic and Eurasian surface air temperature |
title_full |
Subseasonal relationship between Arctic and Eurasian surface air temperature |
title_fullStr |
Subseasonal relationship between Arctic and Eurasian surface air temperature |
title_full_unstemmed |
Subseasonal relationship between Arctic and Eurasian surface air temperature |
title_sort |
subseasonal relationship between arctic and eurasian surface air temperature |
publisher |
Nature Portfolio |
publishDate |
2021 |
url |
https://doi.org/10.1038/s41598-021-83486-5 https://doaj.org/article/1ea4c995b2674b1d83d62b573d551c06 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021) |
op_relation |
https://doi.org/10.1038/s41598-021-83486-5 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-021-83486-5 2045-2322 https://doaj.org/article/1ea4c995b2674b1d83d62b573d551c06 |
op_doi |
https://doi.org/10.1038/s41598-021-83486-5 |
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Scientific Reports |
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11 |
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1 |
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1766308707823517696 |