Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/37318
Title: 30-Day Periodicity in Sunspot Activity & Rainfall
Authors: Reddy, R S
Murty, BH V Ramana
Issue Date: Aug-1978
Publisher: NISCAIR-CSIR, India
Abstract: An attempt is made to examine short term periodicities, if any, in the sunspot activity and rainfall. The daily mean relative sunspot numbers for July-Sep. during 1961-70 and the daily sunspot means for July-Sep. 1889-1938, as well as the rainfall series of Tamil Nadu for July-Sep. during 1961-70 have been analyzed by power spectrum. The study has suggested that the sunspot activity and the rainfall contain a concurrent 30-day periodicity which is highly significant during the southwest monsoon period (July-Sep.) when the sun remains at all times in the northern hemisphere.
Page(s): 215-216
URI: http://nopr.niscair.res.in/handle/123456789/37318
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.07(4) [August 1978]

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