The possible influence of solar activity on Indian summer monsoon rainfall  

作　　者：Ma Lihua Han Yanben Yin Zhiqiang 

机构地区：[1]National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China

出　　处：《Applied Geophysics》2007年第3期231-237,共7页应用地球物理（英文版）

基　　金：The study is supported by the National Natural Science Foundation of China under （Project No. 10373017）.Acknowledgements The authors are grateful to IITM and SIDC for providing Indian the summer monsoon rainfall and sunspots series, respectively. The wavelet transform software is provided by C. Torrence and G. Compo.

摘　　要：The Indian summer monsoon rainfall （ISMR） plays an important role in the climate system of South Asia. Recently, studies about ISMR variations have been going into more depth. In this present paper, we mainly use the Scargle periodogram and wavelet transform methods to study the periodicity of ISMR changes between 1871 and 2004 and review the possible influence of solar activity on the rainfall. Analysis results show complicated ISMR variations have periodicities with remarkable time-variable characteristics. Investigating a possible connection between the rainfall and solar variations, we believe that solar activity affects the ISMR variations to some extent.印度夏天季风降雨(ISMR ) 在南亚的气候系统起一个重要作用。最近，关于 ISMR 变化的研究一直在走进更多的深度。在这份现在的报纸，我们主要使用 Scargle periodogram 和小浪变换方法学习在 1871 和 2004 之间的 ISMR 变化的频率并且在降雨上考察太阳的活动的可能的影响。分析结果证明复杂 ISMR 变化与显著时间变量特征有频率。调查在降雨和太阳的变化之间的一个可能的连接，我们相信那项太阳的活动影响 ISMR 变化到某程度。

关 键 词：Summer monsoon rainfall solar activity scargle periodogram wavelet transform 

分 类 号：P46[天文地球—大气科学及气象学]