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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Autores principales:	Hye-Jin Kim, Seok-Woo Son, Woosok Moon, Jong-Seong Kug, Jaeyoung Hwang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/1ea4c995b2674b1d83d62b573d551c06
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spelling	oai:doaj.org-article:1ea4c995b2674b1d83d62b573d551c062021-12-02T10:54:15ZSubseasonal relationship between Arctic and Eurasian surface air temperature10.1038/s41598-021-83486-52045-2322https://doaj.org/article/1ea4c995b2674b1d83d62b573d551c062021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83486-5https://doaj.org/toc/2045-2322Abstract 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.Hye-Jin KimSeok-Woo SonWoosok MoonJong-Seong KugJaeyoung HwangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
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
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
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://doaj.org/article/1ea4c995b2674b1d83d62b573d551c06
work_keys_str_mv	AT hyejinkim subseasonalrelationshipbetweenarcticandeurasiansurfaceairtemperature AT seokwooson subseasonalrelationshipbetweenarcticandeurasiansurfaceairtemperature AT woosokmoon subseasonalrelationshipbetweenarcticandeurasiansurfaceairtemperature AT jongseongkug subseasonalrelationshipbetweenarcticandeurasiansurfaceairtemperature AT jaeyounghwang subseasonalrelationshipbetweenarcticandeurasiansurfaceairtemperature
_version_	1718396456178548736

Subseasonal relationship between Arctic and Eurasian surface air temperature

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