Study of thunderstorm and rainfall activity over the Indian region

S. S. KANDALGAONKAR, M.I.R. TINMAKER, A. NATH, M. K. KULKARNI, H. K. TRIMBAKE

Abstract

Thirty years (1951-1980) of mean monthly thunderstorms days (TS) and rainfall (RF) amounts for 260 Indian observatories spread uniformly over the country were used to obtain their monthly, seasonal and zonal percentage of occurrence from all India totals. The study has revealed that there is a time lag of one month in the occurrence of peak activity of TS and RF. Seasonal analysis of these two parameters suggest that rainfall yield associated with postmonsoon season TS seems to be higher than the premonsoon season. Six zone analysis of TS and RF has suggested that there exists a wide range of variation in both parameters month after month in that zones, but the 30 year mean percentage of occurrence seems to be more or less equal in magnitude in each zone.

Keywords

Thunderstorms; rainfall; convection; thunderstorm climatology; Indian summer monsoon

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