Open Access Digital Repository of Ministry of Earth Sciences, Government of India

A study of rainfall singularities, cyclonic disturbances and sea-level pressure over Southern India

Reddy, RS and Ramana Murty, BhV (1981) A study of rainfall singularities, cyclonic disturbances and sea-level pressure over Southern India. Archives for Meteorology, Geophysics, and Bioclimatology Series A, 30 (1-2). pp. 99-109.

Full text not available from this repository. (Request a copy)

Abstract

Bowen's meteor hypothesis on rainfall singularities was seriously critisized by some and attributed to the occurrence of local cyclones around the dates of those singularities and also to long-term variations in pressure pattern. This aspect is examined in the present study by making use of frequency distribution method, considering five day periods, and cross-spectral technique of (i) cyclonic disturbances of Bay of Bengal, (ii) the daily average values of sea-level pressure of Bay of Bengal, and (iii) the total daily values of rainfall in Tamil Nadu, South India, during October-December, 1961-1970. The study made does not support the hypothesis that the rainfall singularities observed in an earlier study 1 were influenced by the cyclonic disturbances and long-term variations in pressure pattern. Power spectral analysis of rainfall and sea-level pressure revealed a common 15-day periodicity significant at 99 per cent level. The rainfall and sea-level pressure showed maximum correlation over a 15-day period with a relative phase of 5 days, rainfall preceding sea-level pressure.

Item Type: Article
Additional Information: Copyright of this article belongs to Springer-Verlag
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 10 Apr 2015 10:00
Last Modified: 10 Apr 2015 10:00
URI: http://moeseprints.incois.gov.in/id/eprint/1344

Actions (login required)

View Item View Item