Jalu Tejo Nugroho*
National Institute of Aeronautics and Space (LAPAN), Indonesia
Abstract. From previous studies, it is known that interaction between ocean-atmosphere causes climate variability in the tropical Indian Ocean region as well as in Indonesia. It has also been proposed that solar activity affects Earth's climate globally and regionally. In this study, we report association between Indian Ocean Dipole (IOD) phenomena and cloud cover over western Indonesia. The statistical correlation coefficient (r) is found to be 0.64, for the period April 1976 to January 1996. By using wavelet analysis, we also find that solar signal appears strongly on IOD during December-February.
Keywords: methods : data analysis - Sun : activity