Different responses of surface air temperature over Eurasia in early and late winter to the autumn Kara–Laptev Sea ice
The Arctic climate is changing rapidly, along with intensified melting of sea ice, which has significant impacts on surface air temperature (SAT) in Eurasia. This study reveals that the subseasonal response of SAT to the autumn Kara–Laptev Sea ice (KLSIC) differs significantly between early and late...
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Online Access: | https://doi.org/10.1088/1748-9326/ad345f https://doaj.org/article/ecc8c9d77dc743889915dc54366f757c |
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ftdoajarticles:oai:doaj.org/article:ecc8c9d77dc743889915dc54366f757c 2024-09-15T17:54:11+00:00 Different responses of surface air temperature over Eurasia in early and late winter to the autumn Kara–Laptev Sea ice Haichen Guo Zhicong Yin Tianbao Xu Botao Zhou 2024-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/ad345f https://doaj.org/article/ecc8c9d77dc743889915dc54366f757c EN eng IOP Publishing https://doi.org/10.1088/1748-9326/ad345f https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ad345f 1748-9326 https://doaj.org/article/ecc8c9d77dc743889915dc54366f757c Environmental Research Letters, Vol 19, Iss 4, p 044042 (2024) subseasonal reversal Arctic sea ice surface air temperature WACE Ural high Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2024 ftdoajarticles https://doi.org/10.1088/1748-9326/ad345f 2024-08-05T17:49:46Z The Arctic climate is changing rapidly, along with intensified melting of sea ice, which has significant impacts on surface air temperature (SAT) in Eurasia. This study reveals that the subseasonal response of SAT to the autumn Kara–Laptev Sea ice (KLSIC) differs significantly between early and late winter. The response of SAT to KLSIC forms a warm Arctic–cold Eurasia pattern in early winter. Conversely, the negative anomaly response of SAT to KLSIC in late winter is only distributed in the band range of Eurasia, without significant positive SAT anomaly over the Arctic Ocean. After further examination of the separate physical mechanisms involved in early and late winter, it is found that a decrease in KLSIC in autumn can lead to a strengthened Ural high and Siberian high in the Arctic–Eurasia region, which is conducive to cold events in the mid-latitudes of Eurasia in early winter. For late winter, a westward shift in the response of atmospheric circulation to KLSIC leads to a negative anomaly feedback of North Sea surface temperature, which triggers the propagation of Rossby waves to the Sea of Japan through the wave activity flux. Meanwhile, the deep trough of East Asia is strengthened and extends to the southeast, guiding northern cold air to the western Pacific. Our results highlight that different subseasonal effects of sea ice should be considered in Eurasian climate prediction, rather than only consider the effects in winter mean. Article in Journal/Newspaper Arctic Ocean Kara-Laptev laptev Laptev Sea Sea ice Directory of Open Access Journals: DOAJ Articles Environmental Research Letters 19 4 044042 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
subseasonal reversal Arctic sea ice surface air temperature WACE Ural high Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
subseasonal reversal Arctic sea ice surface air temperature WACE Ural high Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Haichen Guo Zhicong Yin Tianbao Xu Botao Zhou Different responses of surface air temperature over Eurasia in early and late winter to the autumn Kara–Laptev Sea ice |
topic_facet |
subseasonal reversal Arctic sea ice surface air temperature WACE Ural high Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
The Arctic climate is changing rapidly, along with intensified melting of sea ice, which has significant impacts on surface air temperature (SAT) in Eurasia. This study reveals that the subseasonal response of SAT to the autumn Kara–Laptev Sea ice (KLSIC) differs significantly between early and late winter. The response of SAT to KLSIC forms a warm Arctic–cold Eurasia pattern in early winter. Conversely, the negative anomaly response of SAT to KLSIC in late winter is only distributed in the band range of Eurasia, without significant positive SAT anomaly over the Arctic Ocean. After further examination of the separate physical mechanisms involved in early and late winter, it is found that a decrease in KLSIC in autumn can lead to a strengthened Ural high and Siberian high in the Arctic–Eurasia region, which is conducive to cold events in the mid-latitudes of Eurasia in early winter. For late winter, a westward shift in the response of atmospheric circulation to KLSIC leads to a negative anomaly feedback of North Sea surface temperature, which triggers the propagation of Rossby waves to the Sea of Japan through the wave activity flux. Meanwhile, the deep trough of East Asia is strengthened and extends to the southeast, guiding northern cold air to the western Pacific. Our results highlight that different subseasonal effects of sea ice should be considered in Eurasian climate prediction, rather than only consider the effects in winter mean. |
format |
Article in Journal/Newspaper |
author |
Haichen Guo Zhicong Yin Tianbao Xu Botao Zhou |
author_facet |
Haichen Guo Zhicong Yin Tianbao Xu Botao Zhou |
author_sort |
Haichen Guo |
title |
Different responses of surface air temperature over Eurasia in early and late winter to the autumn Kara–Laptev Sea ice |
title_short |
Different responses of surface air temperature over Eurasia in early and late winter to the autumn Kara–Laptev Sea ice |
title_full |
Different responses of surface air temperature over Eurasia in early and late winter to the autumn Kara–Laptev Sea ice |
title_fullStr |
Different responses of surface air temperature over Eurasia in early and late winter to the autumn Kara–Laptev Sea ice |
title_full_unstemmed |
Different responses of surface air temperature over Eurasia in early and late winter to the autumn Kara–Laptev Sea ice |
title_sort |
different responses of surface air temperature over eurasia in early and late winter to the autumn kara–laptev sea ice |
publisher |
IOP Publishing |
publishDate |
2024 |
url |
https://doi.org/10.1088/1748-9326/ad345f https://doaj.org/article/ecc8c9d77dc743889915dc54366f757c |
genre |
Arctic Ocean Kara-Laptev laptev Laptev Sea Sea ice |
genre_facet |
Arctic Ocean Kara-Laptev laptev Laptev Sea Sea ice |
op_source |
Environmental Research Letters, Vol 19, Iss 4, p 044042 (2024) |
op_relation |
https://doi.org/10.1088/1748-9326/ad345f https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/ad345f 1748-9326 https://doaj.org/article/ecc8c9d77dc743889915dc54366f757c |
op_doi |
https://doi.org/10.1088/1748-9326/ad345f |
container_title |
Environmental Research Letters |
container_volume |
19 |
container_issue |
4 |
container_start_page |
044042 |
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1810430397918478336 |