Subseasonal relationship between Arctic and Eurasian surface air temperature
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 rela...
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ftponangunivst:oai:oasis.postech.ac.kr:2014.oak/106879 2023-05-15T14:36:00+02:00 Subseasonal relationship between Arctic and Eurasian surface air temperature Kim, Hye-Jin Son, Seok-Woo Moon, Woosok Kug, Jong-Seong Hwang, Jaeyoung Kug, Jong-Seong 2021-02 https://oasis.postech.ac.kr/handle/2014.oak/106879 https://doi.org/10.1038/s41598-021-83486-5 English eng Nature Publishing Group Scientific Reports Multidisciplinary Sciences 2045-2322 https://oasis.postech.ac.kr/handle/2014.oak/106879 doi:10.1038/s41598-021-83486-5 44772 Scientific Reports, v.11, no.1 000621412400036 2-s2.0-85101209348 Article ART 2021 ftponangunivst https://doi.org/10.1038/s41598-021-83486-5 2022-10-20T21:02:45Z 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. 1 1 Y scie scopus Article in Journal/Newspaper Arctic Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) Arctic Scientific Reports 11 1 |
institution |
Open Polar |
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Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS) |
op_collection_id |
ftponangunivst |
language |
English |
description |
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. 1 1 Y scie scopus |
author2 |
Kug, Jong-Seong |
format |
Article in Journal/Newspaper |
author |
Kim, Hye-Jin Son, Seok-Woo Moon, Woosok Kug, Jong-Seong Hwang, Jaeyoung |
spellingShingle |
Kim, Hye-Jin Son, Seok-Woo Moon, Woosok Kug, Jong-Seong Hwang, Jaeyoung Subseasonal relationship between Arctic and Eurasian surface air temperature |
author_facet |
Kim, Hye-Jin Son, Seok-Woo Moon, Woosok Kug, Jong-Seong Hwang, Jaeyoung |
author_sort |
Kim, Hye-Jin |
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 Publishing Group |
publishDate |
2021 |
url |
https://oasis.postech.ac.kr/handle/2014.oak/106879 https://doi.org/10.1038/s41598-021-83486-5 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Scientific Reports Multidisciplinary Sciences 2045-2322 https://oasis.postech.ac.kr/handle/2014.oak/106879 doi:10.1038/s41598-021-83486-5 44772 Scientific Reports, v.11, no.1 000621412400036 2-s2.0-85101209348 |
op_doi |
https://doi.org/10.1038/s41598-021-83486-5 |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
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1766308712407891968 |