Influence of sunspot activity on the annual rainfall of Tamil Nadu, India

被引：4
|
作者：
R. Samuel Selvaraj
A. Muthuchami
M. Nancharaiah
机构：
[1] Presidency College,Department of Physics
[2] Meteorological Centre,undefined
[3] Cyclone Detection Radar Station,undefined
来源：
Indian Journal of Physics | 2009年 / 83卷 / 9期
关键词：
Tamil Nadu annual rainfall; sunspot activity; galactic cosmic rays; regression equation and El-nino; 92.60.Qs; 92.60.Gn;
D O I：
10.1007/s12648-009-0106-z
中图分类号：
学科分类号：
摘要：
In this paper an attempt is made to understand the existence of any relationship between the sunspot activity and Tamil Nadu annual rainfall from the 100 years data (1901–2000). It is found that the linear correlation between sunspot activity and Tamil Nadu annual rainfall is − 0.21 which is significant at 1% level. When the data is smoothed for eliminating small period oscillations such as El-nino and quasi -Biennial oscillation it is found that for 10 point smoothed values the linear correlation coefficient is − 0.75 and that for 20 point smoothed values is −0.86. A regression estimate is made for Tamil Nadu annual rainfall using sunspot activity by a quadratic regression equation. The excess rainfall period during 1996 to 1998 and deficient rainfall period during 2000 to 2003 can be explained from the sunspot activity.
引用
收藏
页码：1251 / 1258
页数：7
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