近五十年中国西北地区夏季降水场变化特征及影响因素分析OA北大核心CSCDCSTPCD
Characteristics and Analysis of Typical Anomalous Summer Rainfall Patterns in Northwest China over the Last 50 Years
利用中国气象局信息中心提供的西北地区1951～2005年夏季月平均资料集和1958～2002年ERA40资料,分析近五十年来西北地区夏季降水场的主要变化特征,及与之相关的大尺度水汽输送和环流场变化,讨论大尺度环流指数如涛动、极涡、赤道太平洋Nifio3.4区海温与西北地区夏季降水的相关性.结果表明,近五十年西北西部尤其是南疆的降水增多,与西伯利亚(50°N～60°N,40°E～70°E)上空位势高度增加和伊朗高原(35°N～42.5°N,60°E…查看全部>>
Based on the 1951-2005 monthly rainfall data in Northwest China, which is provide by the Chinese Me-teorological Administration Data Center, the authors analyze the spatial and temporal patterns of JJA rainfall in Northwest China. The author try to explain these patterns by using water vapor transport and atmospheric circula-tion by ERA40 reanalysis data. Results show that the rainfall increase in the west part of Northwest China is highly related to 500-hPa…查看全部>>
陈冬冬;戴永久
北京师范大学地理学与遥感科学学院/地表过程与资源生态国家重点实验室,北京,100875中国气象局气象探测中心,北京,100081
天文与地球科学
西北夏季降水EOF水汽输送大气涛动极涡
Northwest China, summer rainfall, EOF, water vapor transport, atmospheric oscillation, polar vortex
《大气科学》 2009 (6)
1247-1258,12
国家杰出青年基金40225013
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