Influence of Central Siberian Snow-Albedo Feedback on the Spring East Asian Dust Cycle and Connection With the Preceding Winter Arctic Oscillation

doi:10.1029/2018JD029385

IEECAS OpenIR > 古环境研究室

	Influence of Central Siberian Snow-Albedo Feedback on the Spring East Asian Dust Cycle and Connection With the Preceding Winter Arctic Oscillation
	Liu, Heng 1,2; Liu, Xiaodong 1,2,3; Dong, Buwen 4
通讯作者	Liu, Xiaodong(liuxd@loess.llqg.ac.cn)
	2018-12-16
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
卷号	123 期号:23 页码:13368-13385
摘要	The Asian dust cycle has significant effects on the climate and environment, while its spatiotemporal variability and change mechanisms are not yet completely understood. Reanalysis data from the Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA2), data set are used to explore the spatiotemporal distribution of the East Asian dust cycle and possible reasons for the interannual variations. Based on the empirical orthogonal function analysis, the dominant mode of dust emissions from the East Asian deserts in the dust season (spring) shows that the Gobi Desert contributes most of the interannual variance of dust emissions in East Asia. The patterns of the regional circulation, temperature, and radiation are analyzed by regressing these variables against the principal component time series of the first empirical orthogonal function mode. The results show that the enhanced dust emissions are associated with a cyclonic circulation anomaly and cooling in the lower and middle troposphere over Central Siberia. The cooling is attributed to local snow-albedo and cloud-albedo feedbacks. The surface cooling is conducive to maintain the snow cover, whereas the cooling in the middle troposphere is associated with the increase of the relative humidity and cloud cover. The increased snow and cloud cover reflect more shortwave radiation, tending to maintain or amplify the surface cooling. It is also found that the negative phase of the Arctic Oscillation in winter initiates the surface cooling in the next spring and results in positive snow-albedo and cloud feedbacks in Central Siberia, eventually enhancing the East Asian dust cycle.
关键词	East Asia dust cycle snow-albedo feedback cloud-albedo feedback Arctic Oscillation
DOI	10.1029/2018JD029385
关键词[WOS]	SAHARAN AIR LAYER ; TIBETAN PLATEAU ; COVER VARIABILITY ; STORM FREQUENCY ; CLIMATE-CHANGE ; PART II ; EMISSION ; PRECIPITATION ; REANALYSIS ; VEGETATION
收录类别	SCI ; SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070103] ; National Key Research and Development Program of China[2016YFA0601904] ; National Natural Science Foundation of China[41690115] ; National Natural Science Foundation of China[41572150] ; U.K. National Centre for Atmospheric Science-Climate (NCAS-Climate) at the University of Reading
WOS研究方向	Meteorology & Atmospheric Sciences
项目资助者	Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; U.K. National Centre for Atmospheric Science-Climate (NCAS-Climate) at the University of Reading
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000455285500019
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/14430
专题	古环境研究室
通讯作者	Liu, Xiaodong
作者单位	1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 4.Univ Reading, Natl Ctr Atmospher Sci, Reading, Berks, England
推荐引用方式 GB/T 7714	Liu, Heng,Liu, Xiaodong,Dong, Buwen. Influence of Central Siberian Snow-Albedo Feedback on the Spring East Asian Dust Cycle and Connection With the Preceding Winter Arctic Oscillation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(23):13368-13385.
APA	Liu, Heng,Liu, Xiaodong,&Dong, Buwen.(2018).Influence of Central Siberian Snow-Albedo Feedback on the Spring East Asian Dust Cycle and Connection With the Preceding Winter Arctic Oscillation.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(23),13368-13385.
MLA	Liu, Heng,et al."Influence of Central Siberian Snow-Albedo Feedback on the Spring East Asian Dust Cycle and Connection With the Preceding Winter Arctic Oscillation".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.23(2018):13368-13385.