DOI: 10.1175/JCLI-D-16-0599.1
Scopus记录号: 2-s2.0-85022338889
论文题名: The role of shallow convection over the Tibetan Plateau
作者: Li Y. ; Zhang M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 15 起始页码: 5791
结束页码: 5803
语种: 英语
Scopus关键词: Climatology
; Clouds
; Precipitation (meteorology)
; Atmospheric circulation
; Atmospheric environment
; Community atmospheric model
; Cumulus cloud
; Moisture convergence
; Monsoon circulations
; Synoptic climatology
; Thermodynamic effect
; Climate models
英文摘要: Cumulus (Cu) from shallow convection is one of the dominant cloud types over the Tibetan Plateau (TP) in the summer according to CloudSat-CALIPSO observations. Its thermodynamic effects on the atmospheric environment and impacts on the large-scale atmospheric circulation are studied in this paper using the Community Atmospheric Model, version 5.3 (CAM5.3). It is found that the model can reasonably simulate the unique distribution of diabatic heating and Cu over the TP. Shallow convection provides the dominant diabatic heating and drying to the lower and middle atmosphere over the TP. A sensitivity experiment indicates that without Cu over the TP, large-scale condensation and stratiform clouds would increase dramatically, which induces enhanced low-level wind and moisture convergence toward the TP, resulting in significantly enhanced monsoon circulation with remote impact on the areas far beyond the TP. Cu therefore acts as a safety valve to modulate the atmospheric environment that prevents the formation of superclusters of stratiform clouds and precipitation over the TP. © 2017 American Meteorological Society. 资助项目: DOE, U.S. Department of Energy
; NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/48814
Appears in Collections: 气候减缓与适应 气候变化与战略
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作者单位: School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, United States; Nanjing University, Nanjing, China; International Center for Climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Li Y.,Zhang M.. The role of shallow convection over the Tibetan Plateau[J]. Journal of Climate,2017-01-01,30(15)