DOI: 10.1175/JCLI-D-11-00136.1
Scopus记录号: 2-s2.0-84859300156
论文题名: A numerical study of the interaction between the large-scale monsoon circulation and orographic precipitation over South and Southeast Asia
作者: Wang Z. ; Chang C.-P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 7 起始页码: 2440
结束页码: 2455
语种: 英语
Scopus关键词: Atmospheric circulation
; Diabatic forcing
; Drag effects
; Indian monsoon
; Indochina Peninsula
; Land-sea thermal contrasts
; Monsoon circulations
; Monsoon onset
; Monsoon precipitation
; Monsoons
; Mountain height
; Numerical studies
; Orographic effects
; Orographic precipitation
; Regional climate models
; Regional model
; Sensitivity tests
; Southeast Asia
; Summer monsoon
; Terrain height
; Tibetan Plateau
; Climatology
; Landforms
; Atmospheric thermodynamics
; climate modeling
; land-sea interaction
; monsoon
; numerical model
; orographic effect
; precipitation assessment
; precipitation intensity
; sensitivity analysis
; terrain
; westerly
; wind field
; China
; Qinghai-Xizang Plateau
; South Asia
; Southeast Asia
英文摘要: A regional climate model is used to simulate the summer monsoon onset in South and Southeast Asia during the year 2000 to explore the interaction between orographic precipitation and the large-scale monsoon circulation. In the control run, the model uses the U. S. Geological Survey topography data and simulates the observed monsoon onset reasonably well. In the sensitivity tests, mountains are removed within different regions south of the Tibetan Plateau. It is found that the Indochina Peninsula monsoon onset is closely related to the local wind-terrain-precipitation interaction, while the Indian monsoon onset is more controlled by the large-scale land-sea thermal contrast. The sensitivity tests suggest two opposite effects of high terrain on the monsoon circulation and precipitation. When the terrain height is below the lifted condensation level (LCL), the low-levelwesterlies and the orographic precipitation weaken with increasing terrain height due to the surface drag effect. When the terrain height is above the LCL, the positive feedback associated with the diabatic forcing of orographic precipitation is dominant, and a large mountain height leads to heavier orographic precipitation and stronger low-level westerlies. The sensitivity tests also show that the impact of orographic precipitation in the Indochina Peninsula extends up to 30° longitude upstream and affects monsoon precipitation along the western coast of India. © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52464
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Department of Meteorology, Naval Postgraduate School, Monterey, CA, United States; Department of Atmospheric Sciences, National Taiwan University, Taipei, Taiwan
Recommended Citation:
Wang Z.,Chang C.-P.. A numerical study of the interaction between the large-scale monsoon circulation and orographic precipitation over South and Southeast Asia[J]. Journal of Climate,2012-01-01,25(7)