| DOI: | 10.1175/JCLI-D-15-0492.1
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| Scopus记录号: | 2-s2.0-84957824188
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| 论文题名: | Cumulus over the Tibetan Plateau in the summer based on CloudSat-CALIPSO data |
| 作者: | Li Y.; Zhang M.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2016
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| 卷: | 29, 期:3 | | 起始页码: | 1219
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| 结束页码: | 1230
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| 语种: | 英语
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| Scopus关键词: | Atmospheric structure
; Boundary layers
; Climate models
; Wind effects
; Cumulus cloud
; Diurnal variation
; Moist static energy
; Shallow convection
; Surface thermodynamics
; Surface wind vector
; Surrounding regions
; Topographic forcing
; Clouds
; CALIPSO
; CloudSat
; cumulus
; diurnal variation
; heat flux
; summer
; topographic effect
; troposphere
; China
; Qinghai-Xizang Plateau
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| 英文摘要: | Cumulus (Cu) can transport heat and water vapor from the boundary layer to the free atmosphere, leading to the redistribution of heat and moist energy in the lower atmosphere. This paper uses the fine-resolution CloudSat-CALIPSO product to characterize Cu over the Tibetan Plateau (TP). It is found that Cu is one of the dominant cloud types over the TP in the northern summer. The Cu event frequency, defined as Cu occurring within 50-km segments, is 54% over the TP in the summer, which is much larger over the TP than in its surrounding regions. The surface wind vector converging at the central TP and the topographic forcing provide the necessary moisture and dynamical lifting of convection over the TP. The structure of the atmospheric moist static energy shows that the thermodynamical environment over the northern TP can be characterized as having weak instability, a shallow layer of instability, and lower altitudes for the level of free convection. The diurnal variation of Cu with frequency peaks during the daytime confirms the surface thermodynamic control on Cu formation over the TP. This study offers insights into how surface heat is transported to the free troposphere over the TP and provides an observational test of climate models in simulating shallow convection over the TP. © 2016 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/50208
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| Appears in Collections: | 气候变化事实与影响
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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
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| Recommended Citation: | |
Li Y.,Zhang M.. Cumulus over the Tibetan Plateau in the summer based on CloudSat-CALIPSO data[J]. Journal of Climate,2016-01-01,29(3)
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