干旱区生态环境知识资源中心(Arid): A transient simulation of precession-scale spring dust activity over northern China and its relation to mid-latitude atmospheric circulation

Arid

DOI	10.1016/j.palaeo.2020.109585
	A transient simulation of precession-scale spring dust activity over northern China and its relation to mid-latitude atmospheric circulation
	Li, Xinzhou 1,2; Liu, Xiaodong 1,2; Pan, Zaitao 3,4; Shi, Zhengguo 1; Xie, Xiaoning 1; Guo, Qingchun 5
通讯作者	Li, Xinzhou
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
EISSN	1872-616X
出版年	2020
卷号	542
英文摘要	Dust aerosol plays an important role in energy and water cycles of the earth system across multiple spatial and temporal scales, and it is also a key factor in determining air quality in arid and semi-arid areas of Asia. Spring is the season of peak dust activity (i.e. emission, transport, and sedimentation) in Asia. However, on the Earth's orbit scale, spring dust activity in northern China (NC) and its relationship with atmospheric circulation have seldom been investigated. We present the results of an analysis of the evolution characteristic on the astronomical timescale, and dynamic mechanism of spring dust activity in NC, based on a transient numerical simulation over the past 150 kyr spanning multiple precessional cycles. We found that within the precessional band, spring dust transport is in-phase with insolation, the upper Westerly Jet on the north (nWJ) of the Tibetan Plateau (TP), surface wind, and heating of the TP; whereas it is out-of-phase with Siberian high (SH), atmospheric precipitation, and soil water. During the high-insolation stage, the nWJ is strengthened by the thermal forcing of the TP, which causes a northward shift of the location of the Westerly Jet, so that dust activity is enhanced by the propagation of upper-level waves. Meanwhile, during the high-insolation stage, the instability of the lower atmosphere is increased due to the strengthening of the northerly wind associated with the weakening of the SH and surface warming, together with their higher interaction, with the nWJ giving rise to dust mobilization in the Asian arid and semi-arid source areas, and vice versa. Rainfall and soil moisture have little influence on the dust cycle on the orbital scale, although modern observations show they have an important inhibitory effect on dust emission.
英文关键词	Asian dust Westerly Jet Precessional cycle Tibetan Plateau Surface heating Siberian high
类型	Article
语种	英语
国家	Peoples R China ; USA
收录类别	SCI-E
WOS记录号	WOS:000517852600010
WOS关键词	LAST GLACIAL MAXIMUM ; TIBETAN PLATEAU ; ORBITAL-SCALE ; ASIAN DUST ; WESTERLY JET ; NUMERICAL-SIMULATION ; MONSOON VARIABILITY ; MILLENNIAL-SCALE ; GOBI DESERT ; CLIMATE
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向	Physical Geography ; Geology ; Paleontology
来源机构	中国科学院地球环境研究所 ; 南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315275
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China; 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; 3.St Louis Univ, Dept Earth & Atmospher Sci, St Louis, MO 63103 USA; 4.Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disaster, Minist Educ, Nanjing, Jiangsu, Peoples R China; 5.Liaocheng Univ, Sch Environm & Planning, Liaocheng, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Li, Xinzhou,Liu, Xiaodong,Pan, Zaitao,et al. A transient simulation of precession-scale spring dust activity over northern China and its relation to mid-latitude atmospheric circulation[J]. 中国科学院地球环境研究所, 南京信息工程大学,2020,542.
APA	Li, Xinzhou,Liu, Xiaodong,Pan, Zaitao,Shi, Zhengguo,Xie, Xiaoning,&Guo, Qingchun.(2020).A transient simulation of precession-scale spring dust activity over northern China and its relation to mid-latitude atmospheric circulation.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,542.
MLA	Li, Xinzhou,et al."A transient simulation of precession-scale spring dust activity over northern China and its relation to mid-latitude atmospheric circulation".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 542(2020).