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Numerical simulation of influence of Tibetan Plateau uplift on winter dust cycle in Asian arid regions
Li, Xinzhou1,2; Pan, Zaitao3; Liu, Xiaodong1,2
2016-04-01
Source PublicationENVIRONMENTAL EARTH SCIENCES
Volume75Issue:7
SubtypeArticle
AbstractWhile it is now generally believed that the source of Chinese Loess Plateau deposit is the deserts in northern China and Mongolia (CM), the source for the dust deposit in eastern China and neighboring seas are still under debate. Using the dust-coupled CAM5 this study simulates responses of Asian dust cycle under varying Tibetan Plateau (TP) heights. Dust activities originated from central Asia (CA: 50-70 degrees E, 35-50 degrees N) and northern China-southern Mongolia (CM: 85-110 degrees E, 35-45 degrees N) under full TP (TP), medium TP (mTP) and no TP (nTP) are analyzed. Results show that as TP uplifts stepwise, the dust mass concentration in CA weakens slightly from 78 (nTP) to 74 (mTP) to 69 lg/kg (TP), whereas that in CM strengthens noticeably from 10 to 22 to 37 mu g/kg correspondingly, more than tripled. These opposite and disparate responses between CA and CM dust concentration are likely because TP uplifting blocks mid-latitude winter westerly, reducing the emission in CA region, whereas the TP uplift enhances Siberia High Pressure thereby drying the soil and promoting dust emission. Further experiments with and without CA and CM sources under contemporary TP terrain indicate that CA source mainly affects local dust concentration and East Asia mid-high latitudes, but CM source contributes to dust in mid-low latitudes extending to as far as northwestern Pacific. Turning off the CM source reduces mid-low latitude concentration by up to 70 %, implying the key role that Cenozoic TP uplifting in the CM source formation and dust load in Asia.
KeywordTibetan Plateau Uplift Dust Emission Particle Transport Winter Westerly Paleoclimate
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s12665-016-5403-1
WOS KeywordCHINESE LOESS PLATEAU ; AEROSOL OPTICAL DEPTH ; ATMOSPHERIC CIRCULATION ; NORTHERN CHINA ; CLIMATE-CHANGE ; MID-PLIOCENE ; MIOCENE ; MONSOON ; MODEL ; ARIDIFICATION
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Water Resources
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000373635400060
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5753
Collection古环境研究室
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China
3.St Louis Univ, Dept Earth & Atmospher Sci, 3642 Lindell, St Louis, MO 63026 USA
Recommended Citation
GB/T 7714
Li, Xinzhou,Pan, Zaitao,Liu, Xiaodong. Numerical simulation of influence of Tibetan Plateau uplift on winter dust cycle in Asian arid regions[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(7).
APA Li, Xinzhou,Pan, Zaitao,&Liu, Xiaodong.(2016).Numerical simulation of influence of Tibetan Plateau uplift on winter dust cycle in Asian arid regions.ENVIRONMENTAL EARTH SCIENCES,75(7).
MLA Li, Xinzhou,et al."Numerical simulation of influence of Tibetan Plateau uplift on winter dust cycle in Asian arid regions".ENVIRONMENTAL EARTH SCIENCES 75.7(2016).
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