DOI: 10.1007/s00382-012-1603-x
Scopus记录号: 2-s2.0-84874338443
论文题名: Asynchronous responses of East Asian and Indian summer monsoons to mountain uplift shown by regional climate modelling experiments
作者: Tang H. ; Micheels A. ; Eronen J.T. ; Ahrens B. ; Fortelius M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 40, 期: 2017-05-06 起始页码: 1531
结束页码: 1549
语种: 英语
英文关键词: Asynchronous evolution
; East Asian summer monsoon (EASM)
; Indian summer monsoon (ISM)
; Mountain uplift
; Regional climate model
; Thermal effect
英文摘要: It has been demonstrated in climate models that both the Indian and East Asian summer monsoons (ISM and EASM) are strengthened by the uplift of the entire Asian orography or Tibetan Plateau (TP) (i. e. bulk mountain uplift). Such an effect is widely perceived as the major mechanism contributing to the evolution of Asian summer monsoons in the Neogene. However, geological evidence suggests more diachronous growth of the Asian orography (i. e. regional mountain uplift) than bulk mountain uplift. This demands a re-evaluation of the relation between mountain uplift and the Asian monsoon in the geological periods. In this study, sensitivity experiments considering the diachronous growth of different parts of the Asian orography are performed using the regional climate model COSMO-CLM to investigate their effects on the Asian summer monsoons. The results show that, different from the bulk mountain uplift, the regional mountain uplift can lead to an asynchronous development of the ISM and EASM. While the ISM is primarily intensified by the thermal insulation (mechanical blocking) effect of the southern TP (Zagros Mountains), the EASM is mainly enhanced by the surface sensible heating of the central, northern and eastern TP. Such elevated surface heating can induce a low-level cyclonic anomaly around the TP that reduces the ISM by suppressing the lower tropospheric monsoon vorticity, but promotes the EASM by strengthening the warm advection from the south of the TP that sustains the monsoon convection. Our findings provide new insights to the evolution of the Asian summer monsoons and their interaction with the tectonic changes in the Neogene. © 2012 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55023
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geosciences and Geography, University of Helsinki, P.O. Box 64, 00014 Helsinki, Finland; Biodiversity and Climate Research Centre (LOEWE BiK-F), Senckenberganlage 25, 60325 Frankfurt am Main, Germany; Senckenberg Research Institute and Nature Museum, Senckenberganlage 25, 60325 Frankfurt am Main, Germany; Institute for Atmospheric and Environmental Sciences, Goethe University, Altenhoeferallee 1, 60438 Frankfurt am Main, Germany
Recommended Citation:
Tang H.,Micheels A.,Eronen J.T.,et al. Asynchronous responses of East Asian and Indian summer monsoons to mountain uplift shown by regional climate modelling experiments[J]. Climate Dynamics,2013-01-01,40(2017-05-06)