干旱区生态环境知识资源中心(Arid): y Temporal variation of dust emissions in dust sources over Central Asia in recent decades and the climate linkages

Arid

DOI	10.1016/j.atmosenv.2019.117176
	y Temporal variation of dust emissions in dust sources over Central Asia in recent decades and the climate linkages
	Shi, Lamei 1,2,3; Zhang, Jiahua 1,2,3; Yao, Fengmei 2; Zhang, Da 1,2,3; Guo, Huadong 1,2,3
通讯作者	Zhang, Jiahua
来源期刊	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
EISSN	1873-2844
出版年	2020
卷号	222
英文摘要	The temporal variation of dust emissions over Central Asia in recent decades and the linkages with atmospheric factors have not been well documented. This study investigated the annual and interannual variations of dust emissions in the six main dust emission regions (i.e., Sor Mertvyy Kultuk (SMK), Ustyurt Plateau (UP), Southeast of Aralktum (SA), Eastern shore of the southern Caspian (ESC), Central Karakum desert (CK), and Trans-Unguz Karakum desert (TK)), using the Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) data from 1980 to 2018. The climate linkages with the variation trend were explored using reanalysis data and the climate indices from NOAA Climate Prediction Center (CPC). The results indicated that, in early spring, dust emissions are distinct in all these sources (except for ESC) due to the cold air intrusions from north, northwest, and northeast directions, and the effect of precipitation was limited by the high evaporation. Whereas in summer and/or early autumn, dust emissions were primarily in SA, ESC, CK, and TK because of the strong northeasterly winds, low vegetation, and dry soils. The overall interannual change of dust emissions in Central Asia showed that relatively larger emissions occurred during 1980-1986 and 1993-2003, especially in April. The dust emissions in SA, ESC, and TK in summer were positively correlated with the pressure gradient between northwestern Kazakhstan and Hindu Kush (NWKHKI), while those in SMK were negatively correlated with Caspian Sea High. The dust emissions in the six dust sources were highly correlated with the maximum wind speeds but showed different sensitivities to drought. The Multivariate El Nino-Southern Oscillation Index (MEI) was related to dust emissions in April over coastal Caspian-Sea areas (SMK and ESC), while those in February over the southern parts (ESC, CK, and TK) were significantly correlated with North Atlantic Oscillation/Arctic Oscillation (NAO/AO). These conclusions could contribute to the meteorology research related to dust emissions and also to the decisions made for environmental protection.
英文关键词	Dust emission source Multivariate ENSO index North Atlantic oscillation Winds fields CasHKI
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000510946800052
WOS关键词	CASPIAN SEA ; ATMOSPHERIC DYNAMICS ; PARTICULATE MATTER ; ARCTIC-OSCILLATION ; POSSIBLE IMPACTS ; SOUTHWEST ASIA ; MIDDLE-EAST ; DIPOLE MODE ; TEMPERATURE ; TRANSPORT
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314142
作者单位	1.Chinese Acad Sci, Aerosp Informat Res Inst, Beijing 100094, Peoples R China; 2.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 101407, Peoples R China
推荐引用方式 GB/T 7714	Shi, Lamei,Zhang, Jiahua,Yao, Fengmei,et al. y Temporal variation of dust emissions in dust sources over Central Asia in recent decades and the climate linkages[J],2020,222.
APA	Shi, Lamei,Zhang, Jiahua,Yao, Fengmei,Zhang, Da,&Guo, Huadong.(2020).y Temporal variation of dust emissions in dust sources over Central Asia in recent decades and the climate linkages.ATMOSPHERIC ENVIRONMENT,222.
MLA	Shi, Lamei,et al."y Temporal variation of dust emissions in dust sources over Central Asia in recent decades and the climate linkages".ATMOSPHERIC ENVIRONMENT 222(2020).