Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas
The Tibetan Plateau (TP) is characterized by heavily local dust activities, however, the mechanism of interannual variations of winter dust frequency over the TP remain poorly understood. Previous studies showed the autumn Arctic sea ice could significantly influence the winter climate over Eurasia....
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Online Access: | https://doi.org/10.1016/j.accre.2022.10.003 https://doaj.org/article/086b6cd2d09542c7a2e6725c01c389fa |
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ftdoajarticles:oai:doaj.org/article:086b6cd2d09542c7a2e6725c01c389fa 2023-05-15T15:15:28+02:00 Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas Chao Xu Jie-Hua Ma Jian-Qi Sun Chao You Yao-Ming Ma Hui-Jun Wang Tao Wang 2022-12-01T00:00:00Z https://doi.org/10.1016/j.accre.2022.10.003 https://doaj.org/article/086b6cd2d09542c7a2e6725c01c389fa EN eng KeAi Communications Co., Ltd. http://www.sciencedirect.com/science/article/pii/S1674927822001101 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2022.10.003 https://doaj.org/article/086b6cd2d09542c7a2e6725c01c389fa Advances in Climate Change Research, Vol 13, Iss 6, Pp 896-908 (2022) Winter dust frequency Tibetan Plateau Sea ice concentration Barents and Kara Seas Snow anomalies Meteorology. Climatology QC851-999 Social sciences (General) H1-99 article 2022 ftdoajarticles https://doi.org/10.1016/j.accre.2022.10.003 2023-01-29T01:31:43Z The Tibetan Plateau (TP) is characterized by heavily local dust activities, however, the mechanism of interannual variations of winter dust frequency over the TP remain poorly understood. Previous studies showed the autumn Arctic sea ice could significantly influence the winter climate over Eurasia. Whether autumn sea ice affects winter dust activity over the TP or not? Here, we used an integrated surface database to investigate possible mechanisms for interannual variability in the frequency of winter dust events above the TP. This variability, which is thought to be mainly caused by local dust emissions, shows significant correlations with sea ice concentration (SIC) in the Barents and Kara Seas during the preceding autumn. Low Barents–Kara SIC is accompanied by reduced snow depth over northern Eurasia between autumn and winter, which can enhance the Eurasian mid-latitude westerly jet stream. This strengthening increases the cyclogenesis and occurrence of strong surface wind speeds in winter, especially over the TP. In addition, a lower SIC is closely associated with reduced precipitation and snow cover in late autumn and winter over the TP, which in turn enhances warming of the land surface and reduces the area of frozen ground. These anomalies in atmospheric circulation patterns and local surface conditions promote dust events above the TP during winter. The ensemble means of Atmospheric Model Intercomparison Project experiments from Phase 6 of the Coupled Model Inter-comparison Project and the Community Atmosphere Model version 4 can generally reproduce the atmospheric circulation anomalies associated with decreased Barents–Kara SIC. This study reveals the crucial effect that SIC anomalies in the Barents and Kara Seas have on winter dust activities over the TP. Article in Journal/Newspaper Arctic Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Advances in Climate Change Research 13 6 896 908 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Winter dust frequency Tibetan Plateau Sea ice concentration Barents and Kara Seas Snow anomalies Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
spellingShingle |
Winter dust frequency Tibetan Plateau Sea ice concentration Barents and Kara Seas Snow anomalies Meteorology. Climatology QC851-999 Social sciences (General) H1-99 Chao Xu Jie-Hua Ma Jian-Qi Sun Chao You Yao-Ming Ma Hui-Jun Wang Tao Wang Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas |
topic_facet |
Winter dust frequency Tibetan Plateau Sea ice concentration Barents and Kara Seas Snow anomalies Meteorology. Climatology QC851-999 Social sciences (General) H1-99 |
description |
The Tibetan Plateau (TP) is characterized by heavily local dust activities, however, the mechanism of interannual variations of winter dust frequency over the TP remain poorly understood. Previous studies showed the autumn Arctic sea ice could significantly influence the winter climate over Eurasia. Whether autumn sea ice affects winter dust activity over the TP or not? Here, we used an integrated surface database to investigate possible mechanisms for interannual variability in the frequency of winter dust events above the TP. This variability, which is thought to be mainly caused by local dust emissions, shows significant correlations with sea ice concentration (SIC) in the Barents and Kara Seas during the preceding autumn. Low Barents–Kara SIC is accompanied by reduced snow depth over northern Eurasia between autumn and winter, which can enhance the Eurasian mid-latitude westerly jet stream. This strengthening increases the cyclogenesis and occurrence of strong surface wind speeds in winter, especially over the TP. In addition, a lower SIC is closely associated with reduced precipitation and snow cover in late autumn and winter over the TP, which in turn enhances warming of the land surface and reduces the area of frozen ground. These anomalies in atmospheric circulation patterns and local surface conditions promote dust events above the TP during winter. The ensemble means of Atmospheric Model Intercomparison Project experiments from Phase 6 of the Coupled Model Inter-comparison Project and the Community Atmosphere Model version 4 can generally reproduce the atmospheric circulation anomalies associated with decreased Barents–Kara SIC. This study reveals the crucial effect that SIC anomalies in the Barents and Kara Seas have on winter dust activities over the TP. |
format |
Article in Journal/Newspaper |
author |
Chao Xu Jie-Hua Ma Jian-Qi Sun Chao You Yao-Ming Ma Hui-Jun Wang Tao Wang |
author_facet |
Chao Xu Jie-Hua Ma Jian-Qi Sun Chao You Yao-Ming Ma Hui-Jun Wang Tao Wang |
author_sort |
Chao Xu |
title |
Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas |
title_short |
Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas |
title_full |
Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas |
title_fullStr |
Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas |
title_full_unstemmed |
Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas |
title_sort |
links between winter dust over the tibetan plateau and preceding autumn sea ice variability in the barents and kara seas |
publisher |
KeAi Communications Co., Ltd. |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.accre.2022.10.003 https://doaj.org/article/086b6cd2d09542c7a2e6725c01c389fa |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_source |
Advances in Climate Change Research, Vol 13, Iss 6, Pp 896-908 (2022) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1674927822001101 https://doaj.org/toc/1674-9278 1674-9278 doi:10.1016/j.accre.2022.10.003 https://doaj.org/article/086b6cd2d09542c7a2e6725c01c389fa |
op_doi |
https://doi.org/10.1016/j.accre.2022.10.003 |
container_title |
Advances in Climate Change Research |
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13 |
container_issue |
6 |
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896 |
op_container_end_page |
908 |
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