气候变化领域集成服务门户(CCPortal): Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas

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DOI	10.1016/j.accre.2022.10.003
	Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas
	Xu, Chao; Ma, Jie-Hua; Sun, Jian-Qi; You, Chao; Ma, Yao-Ming; Wang, Hui-Jun; Wang, Tao
发表日期	2022
ISSN	1674-9278
起始页码	896
结束页码	908
卷号	13 期号:6 页码:13
英文摘要	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 at-mospheric circulation patterns and local surface conditions promote dust events above the TP during winter. The ensemble means of Atmo-spheric 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.
英文关键词	Winter dust frequency; Tibetan Plateau; Sea ice concentration; Barents and Kara Seas; Snow anomalies
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000925645300001
来源期刊	ADVANCES IN CLIMATE CHANGE RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273987
作者单位	Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; China Meteorological Administration; Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Nanjing University of Information Science & Technology; Nanjing University of Information Science & Technology; Chongqing University; Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Lanzhou University
推荐引用方式 GB/T 7714	Xu, Chao,Ma, Jie-Hua,Sun, Jian-Qi,et al. Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas[J]. 中国科学院青藏高原研究所,2022,13(6):13.
APA	Xu, Chao.,Ma, Jie-Hua.,Sun, Jian-Qi.,You, Chao.,Ma, Yao-Ming.,...&Wang, Tao.(2022).Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas.ADVANCES IN CLIMATE CHANGE RESEARCH,13(6),13.
MLA	Xu, Chao,et al."Links between winter dust over the Tibetan Plateau and preceding autumn sea ice variability in the Barents and Kara Seas".ADVANCES IN CLIMATE CHANGE RESEARCH 13.6(2022):13.