| 西风南支与高原季风环流场下青藏高原大气边界层结构研究 |
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| 引用本文： | 伏薇,李茂善,阴蜀城,吕钊,王灵芝,舒磊.西风南支与高原季风环流场下青藏高原大气边界层结构研究[J].高原气象,2022(1):190-203. |
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| 作者姓名： | 伏薇 李茂善 阴蜀城 吕钊 王灵芝 舒磊 |
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| 作者单位： | 成都信息工程大学大气科学学院/高原大气与环境四川省重点实验室/气候与环境变化联合实验室 |
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| 基金项目： | 国家重点研发计划项目（2018YFC1505702）；;国家自然科学基金项目（41675106）； |
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| 摘 要： | 利用第二次青藏高原(下称高原)综合科考"地-气相互作用与气候效应"立体综合加强期观测试验2019年5月、7月和10月珠峰、林芝、那曲和狮泉河站点的探空资料及ERA5再分析资料.探讨在西风南支与高原季风不同风场控制下高原大气边界层结构特征及其与感热潜热通量的关系.结果表明:西风南支风场下各站点大气边界层高度较高原夏季风风...
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| 关 键 词： | 青藏高原 西风南支 高原季风 大气边界层 感热潜热 |
Study on the Atmospheric Boundary Layer Structure of the Qinghai-Xizang Plateau under the South Branch of the Westerly Wind and the Plateau Monsoon Circulation Field |
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| FU Wei,LI Maoshan,YIN Shucheng,LV Zhao,WANG Lingzhi,SHU Lei.Study on the Atmospheric Boundary Layer Structure of the Qinghai-Xizang Plateau under the South Branch of the Westerly Wind and the Plateau Monsoon Circulation Field[J].Plateau Meteorology,2022(1):190-203. |
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| Authors: | FU Wei LI Maoshan YIN Shucheng LV Zhao WANG Lingzhi SHU Lei |
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| Institution: | (School of Atmospheric Sciences,Chengdu University of Information Technology/Plateau Atmosphere and Environment Key Laboratory of Sichuan Province/Joint Laboratory of Climate and Environmental Change,Chengdu 610225,Sichuan,China) |
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| Abstract: | Using the second comprehensive scientific expedition of the Qinghai-Xizang Plateau"Land-Atmosphere Interaction and Climate Effect"three-dimensional comprehensive enhanced observation experiment May,July and October 2019 sounding data at the Mount Everest,Nyingchi,Nagqu,Shiquanhe sites and ERA5 reanalysis data.The characteristics of the atmospheric boundary layer structure of the plateau and its relationship with sensible heat and latent heat flux under the control of different wind fields in the south branch of the westerly wind and the plateau monsoon are discussed.Results show that the height of the atmospheric boundary layer at each station under the westerly south branch wind field is higher than that under the summer monsoon wind field.The height of the convective boundary layers of Mount Everest,Nyingchi,Nagqu and Shiquan River in the southwest wind field are 3250,2250,2760 and 3500 m respectively.while the height of the convective boundary layers of Mount Everest,Nyingchi,Nagqu and Shiquan River under the plateau monsoon field are 2000 m,2100 m,1650 m and 2000 m.The specific humidity of the surface layer at all site is larger on July than it on other months.The specific humidity of the surface layer in Linzhi area is larger than that of the other three regions,and it reaches 12.88 g·kg-1 at the maximum.The wind direction on Mount Everest over 1200 m is dominated by westerly winds in May and October.The wind direction on Nyingchi above 1500 m is dominated by westerly winds in May and October,and in July,winds above 1200 m is dominated by southerly winds.The wind direction of Shiquan River in May and October is dominated by west-southwest wind,and the wind direction of Shiquan River in July is dominated by west-northwest wind.The high-altitude wind speeds of Mount Everest,Nyingchi and Shiquanhe in May and October are much stronger than those in July.The sensible heat flux at each station under the west wind south branch wind field is dominated,and the latent heat flux at each station under the plateau summer wind field is dominated. |
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| Keywords: | Qinghai-Xizang plateau westerly south branch plateau monsoon atmospheric boundary layer sensible heat and latent heat fluxes |
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