DOI: 10.1007/s00382-012-1334-z
Scopus记录号: 2-s2.0-84865604477
论文题名: Revisiting Asian monsoon formation and change associated with Tibetan Plateau forcing: I. Formation
作者: Wu G. ; Liu Y. ; Dong B. ; Liang X. ; Duan A. ; Bao Q. ; Yu J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期: 5 起始页码: 1169
结束页码: 1181
语种: 英语
英文关键词: Global warming
; Positive feedback mechanism
; Rainfall pattern
; Tibetan Plateau thermal forcing
; Vorticity balance
英文摘要: Numerical experiments with different idealized land and mountain distributions are carried out to study the formation of the Asian monsoon and related coupling processes. Results demonstrate that when there is only extratropical continent located between 0 and 120°E and between 20/30°N and the North Pole, a rather weak monsoon rainband appears along the southern border of the continent, coexisting with an intense intertropical convergence zone (ITCZ). The continuous ITCZ surrounds the whole globe, prohibits the development of near-surface cross-equatorial flow, and collects water vapor from tropical oceans, resulting in very weak monsoon rainfall. When tropical lands are integrated, the ITCZ over the longitude domain where the extratropical continent exists disappears as a consequence of the development of a strong surface cross-equatorial flow from the winter hemisphere to the summer hemisphere. In addition, an intense interaction between the two hemispheres develops, tropical water vapor is transported to the subtropics by the enhanced poleward flow, and a prototype of the Asian monsoon appears. The Tibetan Plateau acts to enhance the coupling between the lower and upper tropospheric circulations and between the subtropical and tropical monsoon circulations, resulting in an intensification of the East Asian summer monsoon and a weakening of the South Asian summer monsoon. Linking the Iranian Plateau to the Tibetan Plateau substantially reduces the precipitation over Africa and increases the precipitation over the Arabian Sea and the northern Indian subcontinent, effectively contributing to the development of the South Asian summer monsoon. © 2012 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55187
Appears in Collections: 过去全球变化的重建
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作者单位: State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Department of Meteorology, National Centre for Atmospheric Science, University of Reading, Reading, United Kingdom; National Climate Center, China Meteorological Administration, Beijing, China; National Meteorological Information Center, China Meteorological Administration, Beijing, China
Recommended Citation:
Wu G.,Liu Y.,Dong B.,et al. Revisiting Asian monsoon formation and change associated with Tibetan Plateau forcing: I. Formation[J]. Climate Dynamics,2012-01-01,39(5)