DOI: 10.1002/jgrd.50210
论文题名: Effects of the Tibetan Plateau on the onsetof the summer monsoon in South Asia: The role of the air-sea interaction
作者: Abe M. ; Hori M. ; Yasunari T. ; Kitoh A.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 4 起始页码: 1760
结束页码: 1776
语种: 英语
英文关键词: air-sea interaction
; South Asian summer monsoon
; Tibetan Plateau
Scopus关键词: Atmospheric temperature
; Air sea interactions
; Asian summer monsoons
; Atmospheric circulation patterns
; Coupled atmosphere ocean general circulation model
; Cyclonic circulation
; Lower atmosphere
; Sea surface temperatures
; Tibetan Plateau
; Atmospheric thermodynamics
; air-sea interaction
; general circulation model
; marine atmosphere
; monsoon
; precipitation (climatology)
; sea surface temperature
; summer
; Arabian Sea
; Bay of Bengal
; China
; Indian Ocean
; Qinghai-Xizang Plateau
; South Asia
英文摘要: Using both a coupled atmosphere-ocean general circulation model (GCM) and an atmospheric GCM, we investigate the effects of the Tibetan Plateau (TP) on the onset of the South Asian summer monsoon by conducting simulations with and without the TP. In the coupled GCM, the presence of the TP causes the monsoon onset to occur approximately 15 days later in the Arabian Sea (AS) and India (ID) and approximately 10 days earlier in the Bay of Bengal (BB). These changes are attributed to different atmospheric circulation patterns and different conditions within the adjacent oceans, such as the AS and the BB. When the TP is included, lower sea surface temperatures (SSTs) in the AS contribute to a stable lower atmosphere, which suppresses convection over the AS and ID in May. In contrast, low pressure over South Asia, caused by the TP, induces a southwesterly toward the BB that transports a substantial amount of water vapor to the BB. This flow results in an earlier monsoon in the BB. Without the TP, higher SSTs that are formed in the AS in May destabilize the lower atmosphere and create a depression, resulting in an earlier onset of the monsoon over the AS and ID. Consequently, the cyclonic circulation spreads abruptly to the BB, and precipitation begins to increase over the BB. Therefore, the air-sea interaction in the adjacent ocean under the influence of the TP strongly modulates the onset of the South Asian summer monsoon. This modulation was verified by the atmospheric GCM experiments. Key PointsTibetan Plateau delay the onset of South Asian summer monsoon.Differences in SSTs over South Asia due to the plateauRole of air-sea interaction in the different onset © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63915
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan; Research Institute for Global Change, Japan Agency of Marine-Earth Science and Technology, Yokosuka, Japan; Hydrospheric and Atmospheric Research Center, Nagoya University, Nagoya, Japan; Meteorological Research Institute, Tsukuba, Japan; Arctic Environment Research Center, National Institute of Polar Research, 10-3, Midori-machi, Tachikawa, Tokyo, 190-8518, Japan
Recommended Citation:
Abe M.,Hori M.,Yasunari T.,et al. Effects of the Tibetan Plateau on the onsetof the summer monsoon in South Asia: The role of the air-sea interaction[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(4)