Amplified wintertime Barents Sea warming linked to intensified Barents oscillation
In recent decades, the Barents Sea has warmed more than twice as fast as the rest of the Arctic in winter, but the exact causes behind this amplified warming remain unclear. In this study, we quantify the wintertime Barents Sea warming (BSW, for near-surface air temperature) with an average linear t...
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ftdoajarticles:oai:doaj.org/article:4028f91aaa524034a90f8a8e1bfb027e 2023-09-05T13:17:38+02:00 Amplified wintertime Barents Sea warming linked to intensified Barents oscillation Ziyi Cai Qinglong You Hans W Chen Ruonan Zhang Deliang Chen Jinlei Chen Shichang Kang Judah Cohen 2022-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/ac5bb3 https://doaj.org/article/4028f91aaa524034a90f8a8e1bfb027e EN eng IOP Publishing https://doi.org/10.1088/1748-9326/ac5bb3 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac5bb3 1748-9326 https://doaj.org/article/4028f91aaa524034a90f8a8e1bfb027e Environmental Research Letters, Vol 17, Iss 4, p 044068 (2022) Barents Sea warming Barents oscillation clear-sky downward longwave radiation moisture transport Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2022 ftdoajarticles https://doi.org/10.1088/1748-9326/ac5bb3 2023-08-13T00:36:40Z In recent decades, the Barents Sea has warmed more than twice as fast as the rest of the Arctic in winter, but the exact causes behind this amplified warming remain unclear. In this study, we quantify the wintertime Barents Sea warming (BSW, for near-surface air temperature) with an average linear trend of 1.74 °C decade ^−1 and an interdecadal change around 2003 based on a surface energy budget analysis using the ERA5 reanalysis dataset from 1979–2019. Our analysis suggests that the interdecadal change in the wintertime near-surface air temperature is dominated by enhanced clear-sky downward longwave radiation (CDLW) associated with increased total column water vapor. Furthermore, it is found that a mode of atmospheric variability over the North Atlantic region known as the Barents oscillation (BO) strongly contributed to the BSW with a stepwise jump in 2003. Since 2003, the BO turned into a strengthened and positive phase, characteristic of anomalous high pressure over the North Atlantic and South of the Barents Sea, which promoted two branches of heat and moisture transport from southern Greenland along the Norwegian Sea and from the Eurasian continent to the Barents Sea. This enhanced the water vapor convergence over the Barents Sea, resulting in BSW through enhanced CDLW. Our results highlight the atmospheric circulation related to the BO as an emerging driver of the wintertime BSW through enhanced meridional atmospheric heat and moisture transport over the North Atlantic Ocean. Article in Journal/Newspaper Arctic Barents Sea Greenland North Atlantic Norwegian Sea Directory of Open Access Journals: DOAJ Articles Arctic Barents Sea Greenland Norwegian Sea Environmental Research Letters 17 4 044068 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Barents Sea warming Barents oscillation clear-sky downward longwave radiation moisture transport Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
Barents Sea warming Barents oscillation clear-sky downward longwave radiation moisture transport Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Ziyi Cai Qinglong You Hans W Chen Ruonan Zhang Deliang Chen Jinlei Chen Shichang Kang Judah Cohen Amplified wintertime Barents Sea warming linked to intensified Barents oscillation |
topic_facet |
Barents Sea warming Barents oscillation clear-sky downward longwave radiation moisture transport Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
In recent decades, the Barents Sea has warmed more than twice as fast as the rest of the Arctic in winter, but the exact causes behind this amplified warming remain unclear. In this study, we quantify the wintertime Barents Sea warming (BSW, for near-surface air temperature) with an average linear trend of 1.74 °C decade ^−1 and an interdecadal change around 2003 based on a surface energy budget analysis using the ERA5 reanalysis dataset from 1979–2019. Our analysis suggests that the interdecadal change in the wintertime near-surface air temperature is dominated by enhanced clear-sky downward longwave radiation (CDLW) associated with increased total column water vapor. Furthermore, it is found that a mode of atmospheric variability over the North Atlantic region known as the Barents oscillation (BO) strongly contributed to the BSW with a stepwise jump in 2003. Since 2003, the BO turned into a strengthened and positive phase, characteristic of anomalous high pressure over the North Atlantic and South of the Barents Sea, which promoted two branches of heat and moisture transport from southern Greenland along the Norwegian Sea and from the Eurasian continent to the Barents Sea. This enhanced the water vapor convergence over the Barents Sea, resulting in BSW through enhanced CDLW. Our results highlight the atmospheric circulation related to the BO as an emerging driver of the wintertime BSW through enhanced meridional atmospheric heat and moisture transport over the North Atlantic Ocean. |
format |
Article in Journal/Newspaper |
author |
Ziyi Cai Qinglong You Hans W Chen Ruonan Zhang Deliang Chen Jinlei Chen Shichang Kang Judah Cohen |
author_facet |
Ziyi Cai Qinglong You Hans W Chen Ruonan Zhang Deliang Chen Jinlei Chen Shichang Kang Judah Cohen |
author_sort |
Ziyi Cai |
title |
Amplified wintertime Barents Sea warming linked to intensified Barents oscillation |
title_short |
Amplified wintertime Barents Sea warming linked to intensified Barents oscillation |
title_full |
Amplified wintertime Barents Sea warming linked to intensified Barents oscillation |
title_fullStr |
Amplified wintertime Barents Sea warming linked to intensified Barents oscillation |
title_full_unstemmed |
Amplified wintertime Barents Sea warming linked to intensified Barents oscillation |
title_sort |
amplified wintertime barents sea warming linked to intensified barents oscillation |
publisher |
IOP Publishing |
publishDate |
2022 |
url |
https://doi.org/10.1088/1748-9326/ac5bb3 https://doaj.org/article/4028f91aaa524034a90f8a8e1bfb027e |
geographic |
Arctic Barents Sea Greenland Norwegian Sea |
geographic_facet |
Arctic Barents Sea Greenland Norwegian Sea |
genre |
Arctic Barents Sea Greenland North Atlantic Norwegian Sea |
genre_facet |
Arctic Barents Sea Greenland North Atlantic Norwegian Sea |
op_source |
Environmental Research Letters, Vol 17, Iss 4, p 044068 (2022) |
op_relation |
https://doi.org/10.1088/1748-9326/ac5bb3 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ac5bb3 1748-9326 https://doaj.org/article/4028f91aaa524034a90f8a8e1bfb027e |
op_doi |
https://doi.org/10.1088/1748-9326/ac5bb3 |
container_title |
Environmental Research Letters |
container_volume |
17 |
container_issue |
4 |
container_start_page |
044068 |
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1776198734231633920 |