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黄刚, 周连童. 青藏高原西侧绕流风系的变化及其与东亚夏季风和我国华北地区夏季降水的关系[J]. 气候与环境研究, 2004, 9(2): 316-330. DOI: 10.3878/j.issn.1006-9585.2004.02.08
引用本文: 黄刚, 周连童. 青藏高原西侧绕流风系的变化及其与东亚夏季风和我国华北地区夏季降水的关系[J]. 气候与环境研究, 2004, 9(2): 316-330. DOI: 10.3878/j.issn.1006-9585.2004.02.08
Huang Gang, Zhou Liantong. The Variability of the Wind System Circulating round the West Side of the Tibetan Plateau and Its Relation to the East Asian Summer Monsoon and Summer Rainfall in North China[J]. Climatic and Environmental Research, 2004, 9(2): 316-330. DOI: 10.3878/j.issn.1006-9585.2004.02.08
Citation: Huang Gang, Zhou Liantong. The Variability of the Wind System Circulating round the West Side of the Tibetan Plateau and Its Relation to the East Asian Summer Monsoon and Summer Rainfall in North China[J]. Climatic and Environmental Research, 2004, 9(2): 316-330. DOI: 10.3878/j.issn.1006-9585.2004.02.08

青藏高原西侧绕流风系的变化及其与东亚夏季风和我国华北地区夏季降水的关系

The Variability of the Wind System Circulating round the West Side of the Tibetan Plateau and Its Relation to the East Asian Summer Monsoon and Summer Rainfall in North China

  • 摘要: 从观测资料分析了青藏高原西侧绕流偏北风系的年际和年代际变化及其与东亚夏季风和华北地区夏季降水的关系.研究表明,前者对后者有很大影响,若夏季青藏高原西侧绕流的偏北风系强,则东亚夏季风偏南风分量强,且华北地区夏季降水可能偏多;相反,若夏季青藏高原西侧绕流的偏北风系弱,则东亚夏季风的偏南风分量弱,且华北地区夏季降水可能偏少.分析结果还表明,由于从1965年之后(特别从1977年之后),高原西侧绕流的偏北风系减弱,可能导致了东亚夏季风的偏南风分量减弱,使得输向华北的水汽大大减弱,且引起华北地区降水减少,发生了持续严重干旱.

     

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