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题名: Impacts of Spatiotemporal Anomalies of Tibetan Plateau Snow Cover on Summer Precipitation in Eastern China
作者: Wang, CH; Yang, K; Li, YL; Wu, D; Bo, Y
收录类别: SCIE
出版日期: 2017-02
刊名: JOURNAL OF CLIMATE
卷号: 30, 期号:1-3, 页码:885-903
出版者: AMER METEOROLOGICAL SOC
出版地: BOSTON
英文摘要: Tibetan Plateau (TP) snow cover undergoes significant temporal and spatial variations during the winter and spring months. This study investigates the relationship between the spatiotemporal distribution of winter-spring snow cover (SC) over the TP and summer precipitation in eastern China (EC) using the singular value decomposition (SVD) method. Four simulation experiments are designed to validate the results of SVD analysis. Both observations and simulations show that heavier snow cover in the southern TP leads to more rainfall in the Yangtze River basin and northeastern China, and less precipitation in southern China, whereas heavier snow cover in the northern TP results in enhanced rainfall in southeastern and northern China and weakened precipitation in the Yangtze River basin. The linkage is attributed to anomalous westerly winds in the upper troposphere at around 200 hPa and to changes of the southern branch of westerlies at 500 hPa on the south side of the TP, which are caused by lasting diabatic heat anomalies over the TP. The shifts in position of the westerly jet at the exit region and negative anomalies of geopotential height at 500 hPa further result in anomalous anticyclone over the East China Sea and the corresponding 850-hPa water vapor convergence and influence the anomalous summer precipitation belt in EC.
作者部门: [Wang, Chenghai ; Yang, Kai ; Li, Yiling ; Wu, Di ; Bo, Yue] Lanzhou Univ, Coll Atmospher Sci, Key Lab Arid Climate Change & Disaster Reduct Gan, Lanzhou, Peoples R China
通讯作者: Wang, CH (reprint author), Lanzhou Univ, Coll Atmospher Sci, Key Lab Arid Climate Change & Disaster Reduct Gan, Lanzhou, Peoples R China.
学科分类: Meteorology & Atmospheric Sciences
文章类型: Article
所属项目编号: National Science Foundation of China [91437217, 41275061, 41471034, 41661144017] ; China National Basic Research Program [2013CBA01800]
所属项目名称: 国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划)
项目资助者: NSFC ; MOST
语种: 英语
DOI: 10.1175/JCLI-D-16-0041.1
ISSN号: 0894-8755
WOS记录号: WOS:000395512300004
IR记录号: WOS:000395512300004
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/189555
Appears in Collections:大气科学学院_期刊论文

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Recommended Citation:
Wang, CH,Yang, K,Li, YL,et al. Impacts of Spatiotemporal Anomalies of Tibetan Plateau Snow Cover on Summer Precipitation in Eastern China[J]. JOURNAL OF CLIMATE,2017,30(1-3):885-903.
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