| 东亚夏季风异常的研究 |
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| 引用本文： | 王日升,施尚文.东亚夏季风异常的研究[J].北京师范大学学报(自然科学版),1987(1). |
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| 作者姓名： | 王日升 施尚文 |
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| 作者单位： | 北京师范大学地理系，北京师范大学地理系 |
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| 摘 要： | 本文运用经验正交函数分析方法,对10～65°N,90°E～175°W范围内近30年逐年7月和8月平均海平面气压场进行了分析研究.结果表明,第一、第三特征向量与东亚季风异常有关,第二特征向量与西风环流异常有关.讨论了东亚季风异常与大气环流的关系,以及季风异常对华北东部地区降水时空分布的影响.
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| 关 键 词： | 夏季风异常 海平面气压场 经验正交函数分析 |
A STUDY ON EAST ASIA SUMMER MONSOON ANOMALY |
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| Wang Risheng Shi Shangwen.A STUDY ON EAST ASIA SUMMER MONSOON ANOMALY[J].Journal of Beijing Normal University(Natural Science),1987(1). |
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| Authors: | Wang Risheng Shi Shangwen |
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| Institution: | Department of Geography |
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| Abstract: | In order to gain a further insight into East Asia summer monsoon ano- maly (SMA), sea-level pressure (SLP) anomaly, patterns over East Asia and western part of North Pacific Ocean are determined via empirical orthogonal function (EOF) analysis, based on SLP data over 26 years. It is found that EOF_1 and EOF_3 are associated with SMA while EOF_2 is linked with the ano- malies of westerlies. The time coefficent series of EOF_1 can effectively repre- sent the inter-annual varation of East Asia summer monsoon. The relations- hip between SMA and westerly anomaly as well as that between SMA and the anomalies of subtropical high is discussed. The spatial and temporal var- iablity of summer rainfall in the eastern part of North China is also studied. |
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| Keywords: | summer monsoon anomaly sea-level pressure empirical orthogonal function analysis |
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