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Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum
Li, Xinzhou1,2; Liu, Xunchuan1,2; Zhou, Haibo1
Corresponding AuthorLi, Xinzhou(lixz@ieecas.cn)
2020-05-01
Source PublicationGEOLOGICAL MAGAZINE
ISSN0016-7568
Volume157Issue:5Pages:777-789
AbstractThe dust cycle plays an important role in the long-term evolution of the climate and environment. In this paper, an improved climate model including aerosol processes was used to carry out a set of sensitivity experiments and comparative analyses of the effects of high-latitude ice-sheet extent and abnormal dust erosion, as well as Earth's orbital parameters and atmospheric greenhouse gas content, on dust activities during the last glacial maximum. The comparative analysis found that incorporating the abnormal surface erosion factor alone could increase dust emissions by 2.77-fold and 3.77-fold of the present-day global and Asian dust emissions, respectively. The high-latitude ice-sheet factor caused global dust emissions to increase by 1.25-fold that of the present day. Sensitivity experiments showed that increased surface erosion in Asia during the last glacial maximum made the greatest contribution to the increased dust emissions in Asia, followed by the high-latitude ice-sheet factor, while the contributions of the greenhouse gas content and orbital parameters were relatively weak. Strong dust emissions during the glacial period were therefore not only dependent on the development of the high-latitude ice sheets but were strongly associated with the underlying surface characteristics of local dust source regions.
Keyworddust activity ice sheet erosion factor last glacial maximum climate model
DOI10.1017/S0016756819000335
WOS KeywordCLIMATE ; PACIFIC ; DESERT ; OCEAN ; DEPOSITION ; TRANSPORT ; EMISSION ; AEROSOLS ; REGIONS ; CORES
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFA0601904] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070103] ; National Natural Science Foundation of China[41690115] ; National Natural Science Foundation of China[41472162] ; Belt & Road Center for Climate and Environment Studies, Institute of Earth Environment, Chinese Academy of Sciences
WOS Research AreaGeology
Funding OrganizationNational Key Research and Development Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Belt & Road Center for Climate and Environment Studies, Institute of Earth Environment, Chinese Academy of Sciences
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000534526500008
PublisherCAMBRIDGE UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/14816
Collection古环境研究室
Corresponding AuthorLi, Xinzhou
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
2.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Li, Xinzhou,Liu, Xunchuan,Zhou, Haibo. Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum[J]. GEOLOGICAL MAGAZINE,2020,157(5):777-789.
APA Li, Xinzhou,Liu, Xunchuan,&Zhou, Haibo.(2020).Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum.GEOLOGICAL MAGAZINE,157(5),777-789.
MLA Li, Xinzhou,et al."Joint influence of surface erosion and high-latitude ice-sheet extent on Asian dust cycle during the last glacial maximum".GEOLOGICAL MAGAZINE 157.5(2020):777-789.
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