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Influence of the Tibetan Plateau and its northern margins on the mid-latitude Westerly Jet over Central Asia in summer
Sha, Yingying1; Ren, Xin1; Shi, Zhengguo1,2,3; Zhou, Peng4; Li, Xinzhou1,5; Liu, Xiaodong1
2020-04-15
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume544Pages:16
Abstract

The upper-troposphere Westerly Jet is currently maintained in the mid-latitudes of Central Asia during summer, the strength and movement of which are closely related to the variations in precipitation in arid Central Asia. However, little is known about how this Westerly Jet has changed during the Cenozoic, although it is known that the Tibetan Plateau has a crucial role in the modern Asian climate. We conducted a set of numerical experiments to examine the effects of the Tibetan Plateau and the topography of its northern margins (the Pamir Plateau, the Tian Shan mountains and the Mongolian Plateau) on the Westerly Jet in summer. The mid-latitude Westerly Jet is significantly intensified with the uplift of the Tibetan Plateau. The center of the jet stream moves about 1 degrees to the north. This strengthening and shift in the Westerly Jet are primarily due to the strong atmospheric heat source induced by the uplift of the Tibetan Plateau. With the inclusion of the Pamir Plateau and Tian Shan mountains, the Westerly winds in the northern axis of the jet are strengthened while the southern part is weakened, resulting in a continuous northward shift in the Westerly Jet stream. Similar to the effects of the Tibetan Plateau, anomalous diabatic heating appears with the inclusion of the Pamir Plateau and Tian Shan mountains and the intensity of the Westerly Jet is slightly weakened. The Westerly Jet is also weakened, but stops moving northward, when the Mongolian Plateau is uplifted. This is a result of continuous northward warming. The mid-latitude Westerly Jet therefore experienced distinct changes during the Cenozoic in association with the development of the atmospheric heat source in summer as a result of the stepwise uplift of the Tibetan Plateau, Tian Shan mountains and Mongolian Plateau. This may have influenced the aridity of the Asian interior and the transport of eolian dust.

KeywordTian Shan Pamirs Mongolia Asian interior Numerical experiments
DOI10.1016/j.palaeo.2020.109611
WOS KeywordLATE CENOZOIC UPLIFT ; ARID CLIMATE ; INTERANNUAL VARIABILITY ; GENERAL-CIRCULATION ; TARIM BASIN ; GRAIN-SIZE ; PRECIPITATION ; SENSITIVITY ; MOUNTAINS ; EVOLUTION
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA20070103] ; Chinese Academy of Sciences[QYZDY-SSW-DQC001] ; Chinese Academy of Sciences[ZDBS-SSW-DQC001] ; National Natural Science Foundation of China[41977382] ; Youth Innovation Promotion Association Chinese Academy of Sciences
WOS Research AreaPhysical Geography ; Geology ; Paleontology
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association Chinese Academy of Sciences
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000521116600010
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/12522
Collection古环境研究室
第四纪科学与全球变化卓越创新中心
Corresponding AuthorSha, Yingying; Shi, Zhengguo
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
3.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
4.Beijing Normal Univ, Interdisciplinary Res Ctr Earth Sci Frontier, Beijing 100875, Peoples R China
5.Natl Sci & Technol Infrastruct China, Natl Earth Syst Sci Data Ctr, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Sha, Yingying,Ren, Xin,Shi, Zhengguo,et al. Influence of the Tibetan Plateau and its northern margins on the mid-latitude Westerly Jet over Central Asia in summer[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,544:16.
APA Sha, Yingying,Ren, Xin,Shi, Zhengguo,Zhou, Peng,Li, Xinzhou,&Liu, Xiaodong.(2020).Influence of the Tibetan Plateau and its northern margins on the mid-latitude Westerly Jet over Central Asia in summer.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,544,16.
MLA Sha, Yingying,et al."Influence of the Tibetan Plateau and its northern margins on the mid-latitude Westerly Jet over Central Asia in summer".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 544(2020):16.
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