Interdecadal variability of the warm Arctic-cold Eurasia pattern linked to the Barents oscillation
Observed winter near-surface air temperature anomalies in the Northern Hemisphere have exhibited a warm Arctic-cold Eurasia (WACE) pattern with interdecadal variation in recent decades, but the exact mechanism behind WACE is still under debate. This study used reanalysis data and climate model simul...
Published in: | Atmospheric Research |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2023
|
Subjects: | |
Online Access: | https://lup.lub.lu.se/record/7e5acdad-5de3-4ab3-8d74-656ff34931d0 https://doi.org/10.1016/j.atmosres.2023.106712 |
id |
ftulundlup:oai:lup.lub.lu.se:7e5acdad-5de3-4ab3-8d74-656ff34931d0 |
---|---|
record_format |
openpolar |
spelling |
ftulundlup:oai:lup.lub.lu.se:7e5acdad-5de3-4ab3-8d74-656ff34931d0 2023-06-11T04:08:49+02:00 Interdecadal variability of the warm Arctic-cold Eurasia pattern linked to the Barents oscillation Cai, Ziyi You, Qinglong Chen, Hans W. Zhang, Ruonan Zuo, Zhiyan Dai, Guokun Chen, Deliang Cohen, Judah Zolina, Olga Gulev, Sergey K. 2023-05-15 https://lup.lub.lu.se/record/7e5acdad-5de3-4ab3-8d74-656ff34931d0 https://doi.org/10.1016/j.atmosres.2023.106712 eng eng Elsevier https://lup.lub.lu.se/record/7e5acdad-5de3-4ab3-8d74-656ff34931d0 http://dx.doi.org/10.1016/j.atmosres.2023.106712 scopus:85150153261 Atmospheric Research; 287, no 106712 (2023) ISSN: 0169-8095 Climate Research Atmospheric circulation changes Barents Oscillation Interdecadal variability Warm Arctic-cold Eurasia contributiontojournal/article info:eu-repo/semantics/article text 2023 ftulundlup https://doi.org/10.1016/j.atmosres.2023.106712 2023-04-26T22:27:34Z Observed winter near-surface air temperature anomalies in the Northern Hemisphere have exhibited a warm Arctic-cold Eurasia (WACE) pattern with interdecadal variation in recent decades, but the exact mechanism behind WACE is still under debate. This study used reanalysis data and climate model simulations to investigate the interdecadal variability of the WACE pattern on a centennial scale, as well as the role of atmospheric circulations. It is found that the second mode of atmospheric variability over the North Atlantic-Arctic region, known as the Barents oscillation (BO), played a dominant role in regulating the interdecadal variability of WACE. The atmospheric circulation associated with the positive phase of the BO corresponds to an anomalous enhancement of the quasi-barotropic anticyclone near the southern Barents-Kara Seas (BKS) and the North Atlantic, as well as a weakening of the mid-latitude westerly jet. This atmospheric circulation anomaly favors the northward transport of atmospheric heat and moisture to the BKS from the mid-latitudes, resulting in an increased air temperature through downward longwave radiation. Concurrently cold air is transported from the polar region to Central Eurasia (CE), decreasing air temperature over CE. The amplified temperature anomaly dipole results in the decadal enhancement of the WACE pattern. The atmospheric circulation anomalies related to the negative phase of the BO are the opposite, which in turn leads to the decadal weakening of the WACE pattern. Our results further support the important role of internal atmospheric variability in the formation of WACE and emphasize that the atmospheric circulation associated with the BO is the main driver of WACE decadal variability over the past century. Article in Journal/Newspaper Arctic Atlantic Arctic Atlantic-Arctic North Atlantic Lund University Publications (LUP) Arctic Atmospheric Research 287 106712 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Climate Research Atmospheric circulation changes Barents Oscillation Interdecadal variability Warm Arctic-cold Eurasia |
spellingShingle |
Climate Research Atmospheric circulation changes Barents Oscillation Interdecadal variability Warm Arctic-cold Eurasia Cai, Ziyi You, Qinglong Chen, Hans W. Zhang, Ruonan Zuo, Zhiyan Dai, Guokun Chen, Deliang Cohen, Judah Zolina, Olga Gulev, Sergey K. Interdecadal variability of the warm Arctic-cold Eurasia pattern linked to the Barents oscillation |
topic_facet |
Climate Research Atmospheric circulation changes Barents Oscillation Interdecadal variability Warm Arctic-cold Eurasia |
description |
Observed winter near-surface air temperature anomalies in the Northern Hemisphere have exhibited a warm Arctic-cold Eurasia (WACE) pattern with interdecadal variation in recent decades, but the exact mechanism behind WACE is still under debate. This study used reanalysis data and climate model simulations to investigate the interdecadal variability of the WACE pattern on a centennial scale, as well as the role of atmospheric circulations. It is found that the second mode of atmospheric variability over the North Atlantic-Arctic region, known as the Barents oscillation (BO), played a dominant role in regulating the interdecadal variability of WACE. The atmospheric circulation associated with the positive phase of the BO corresponds to an anomalous enhancement of the quasi-barotropic anticyclone near the southern Barents-Kara Seas (BKS) and the North Atlantic, as well as a weakening of the mid-latitude westerly jet. This atmospheric circulation anomaly favors the northward transport of atmospheric heat and moisture to the BKS from the mid-latitudes, resulting in an increased air temperature through downward longwave radiation. Concurrently cold air is transported from the polar region to Central Eurasia (CE), decreasing air temperature over CE. The amplified temperature anomaly dipole results in the decadal enhancement of the WACE pattern. The atmospheric circulation anomalies related to the negative phase of the BO are the opposite, which in turn leads to the decadal weakening of the WACE pattern. Our results further support the important role of internal atmospheric variability in the formation of WACE and emphasize that the atmospheric circulation associated with the BO is the main driver of WACE decadal variability over the past century. |
format |
Article in Journal/Newspaper |
author |
Cai, Ziyi You, Qinglong Chen, Hans W. Zhang, Ruonan Zuo, Zhiyan Dai, Guokun Chen, Deliang Cohen, Judah Zolina, Olga Gulev, Sergey K. |
author_facet |
Cai, Ziyi You, Qinglong Chen, Hans W. Zhang, Ruonan Zuo, Zhiyan Dai, Guokun Chen, Deliang Cohen, Judah Zolina, Olga Gulev, Sergey K. |
author_sort |
Cai, Ziyi |
title |
Interdecadal variability of the warm Arctic-cold Eurasia pattern linked to the Barents oscillation |
title_short |
Interdecadal variability of the warm Arctic-cold Eurasia pattern linked to the Barents oscillation |
title_full |
Interdecadal variability of the warm Arctic-cold Eurasia pattern linked to the Barents oscillation |
title_fullStr |
Interdecadal variability of the warm Arctic-cold Eurasia pattern linked to the Barents oscillation |
title_full_unstemmed |
Interdecadal variability of the warm Arctic-cold Eurasia pattern linked to the Barents oscillation |
title_sort |
interdecadal variability of the warm arctic-cold eurasia pattern linked to the barents oscillation |
publisher |
Elsevier |
publishDate |
2023 |
url |
https://lup.lub.lu.se/record/7e5acdad-5de3-4ab3-8d74-656ff34931d0 https://doi.org/10.1016/j.atmosres.2023.106712 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Atlantic Arctic Atlantic-Arctic North Atlantic |
genre_facet |
Arctic Atlantic Arctic Atlantic-Arctic North Atlantic |
op_source |
Atmospheric Research; 287, no 106712 (2023) ISSN: 0169-8095 |
op_relation |
https://lup.lub.lu.se/record/7e5acdad-5de3-4ab3-8d74-656ff34931d0 http://dx.doi.org/10.1016/j.atmosres.2023.106712 scopus:85150153261 |
op_doi |
https://doi.org/10.1016/j.atmosres.2023.106712 |
container_title |
Atmospheric Research |
container_volume |
287 |
container_start_page |
106712 |
_version_ |
1768382336817168384 |