Singularities in Northeast Monsoon Rainfall of Tamil Nadu

Abstract

A comprehensive programme of work on the singularities of Indian rainfall, region wise and season wise, making use of time series analysis, has been undertaken. The results of analysis under this programme are now available for rainfall of northeast monsoon in Tamil Nadu. Though periods of peak rainfall on calendar dates which bear association with known periods of occurrence of meteor showers have been identified the study does not support Bowen's meteoric shower hypothesis. The analysis suggested periodicities in the rainfall and these may be responsible for the observed singularities. The influence of localized cyclones contributing to the suggested periodicities cannot be ruled out.