Relationship between the sharp decrease in dust storm frequency over East Asia and the abrupt loss of Arctic sea ice in the early 1980s

doi:10.1017/S0016756819000967

	Relationship between the sharp decrease in dust storm frequency over East Asia and the abrupt loss of Arctic sea ice in the early 1980s
	Shang, Ke 1,2; Liu, Xiaodong 1,2,3
刊名	GEOLOGICAL MAGAZINE
	2020-05-01
卷号	157 期号:5 页码:729-740
关键词	East Asian dust storm Arctic sea ice 1980s regime shift Rossby wave train
ISSN号	0016-7568
DOI	10.1017/S0016756819000967
通讯作者	Liu, Xiaodong(liuxd@loess.llqg.ac.cn)
英文摘要	Based on dust storm frequency (DSF) data from the China Meteorological Administration, Arctic sea-ice concentration (SIC) data from the Hadley Centre, and atmospheric reanalysis data from the National Centers for Environmental Prediction (NCEP) and National Center for Atmospheric Research (NCAR), temporal variations and regime shifts of East Asian DSF and Arctic SIC during 1961-2015 are revealed, and the possible relationship between them is explored. The results show that East Asian DSF in spring is closely associated with the preceding winter SIC from the northern Greenland Sea to the Barents Sea (20 degrees W-60 degrees E, 74.5 degrees N-78.5 degrees N). In the past half-century, both East Asian DSF and Arctic SIC have shown significant declining trends, with consistent regime shifts in the early 1980s. Further statistical analyses indicate that the abrupt decrease of East Asian DSF in spring may be attributed to the concurrent sharp loss of Arctic SIC in the preceding winter. It is the loss of Arctic SIC that causes the atmospheric circulation anomalies downstream by stimulating a Rossby wave train, resulting in decelerated wind speed, dampened vertical wind shear and restrained synoptic-scale disturbances over the dust source region, eventually leading to the decline in East Asian DSF over decadal timescales.
资助项目	National Key Research and Development Program of China[2016YFA0601904] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070103] ; National Natural Science Foundation of China[41690115] ; China's Ministry of Environmental Protection[DQGG0104]
WOS关键词	EURASIAN TELECONNECTION ; HAZE POLLUTION ; WAVE-ACTIVITY ; DESERT DUST ; CLIMATE ; CHINA ; PRECIPITATION ; CONNECTIONS ; PACIFIC ; ROLES
WOS研究方向	Geology
语种	英语
出版者	CAMBRIDGE UNIV PRESS
WOS记录号	WOS:000534526500004
资助机构	National Key Research and Development Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; China's Ministry of Environmental Protection
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/14818]
专题	地球环境研究所_古环境研究室
通讯作者	Liu, Xiaodong
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Shang, Ke,Liu, Xiaodong. Relationship between the sharp decrease in dust storm frequency over East Asia and the abrupt loss of Arctic sea ice in the early 1980s[J]. GEOLOGICAL MAGAZINE,2020,157(5):729-740.
APA	Shang, Ke,&Liu, Xiaodong.(2020).Relationship between the sharp decrease in dust storm frequency over East Asia and the abrupt loss of Arctic sea ice in the early 1980s.GEOLOGICAL MAGAZINE,157(5),729-740.
MLA	Shang, Ke,et al."Relationship between the sharp decrease in dust storm frequency over East Asia and the abrupt loss of Arctic sea ice in the early 1980s".GEOLOGICAL MAGAZINE 157.5(2020):729-740.