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中文摘要: 采用复经验正交函数(CEOF)方法对我国干旱半干旱区45个代表站,近40年来的月降水距平场划分出3种主要的分布型,分析了它们的分布特征。同时还揭示了北极海冰状况与干旱半干旱区夏季降水的密切关系,并初步分析了海冰与极涡、西太平洋副热带高压等大气环流的关联,以了解其可能的天气学影响过程。
中文关键词: 降水，干旱半干旱区，北极海冰
Abstract:The temporal and spatial distribution of precipitation in the dry and semi-dry region of China are investigated by carrying out the complex Emperical Orthogonal Function technique for 45 stations from 1950 through 1992 A. D. In this region, Three spatial patterns have been derived. In addition, the relationship between the precipitation patterns and Arctic sea ice indices have been also analysed. Finally, the possible influence of physical processes were also discussed.
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基金项目:国家气象局“八五"重点课题
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引用文本：
李月洪,1995.我国干旱半干旱区降水场及与北极海冰的关系[J].气象,21(9):11-15.
,1995.The Characteristics of Precipitation in the Dry and Semi-dry Region of China and Their Connection with Arctic Sea Ice[J].Meteor Mon,21(9):11-15.
李月洪,1995.我国干旱半干旱区降水场及与北极海冰的关系[J].气象,21(9):11-15.
,1995.The Characteristics of Precipitation in the Dry and Semi-dry Region of China and Their Connection with Arctic Sea Ice[J].Meteor Mon,21(9):11-15.