Patterns of Rainfall Distribution over India during 1950-2005
This paper examined the pattern of monthly rainfall distribution over India during the period 1950-2005. The statistical techniques such as standard deviation and coefficient of variation were used to study the variation in rainfall distribution in 438 metereological stations. The precipitation concentration index was used to study the changes in seasonality of precipitation distribution.Study revealed spatial and temporal variation in rainfall distribution. Few locations experienced an increasing rainfall distribution, especially during the monsoon months. Among these locations with increase in rainfall distribution, some also showed geographical clustering while other areas lacked spatial continuity of locations having low variability. It has also been observed that in recent years lesser variation in rainfall distribution. The lack of spatial and temporal continuity patterns in rainfall distribution indicates lesser impact of global temperature rise on rainfall variability of India.
Keywords: Rainfall Distribution Pattern, Precipitation Concentration Index,, Rainfall Spatial Variability.
Sarath Babu M g
Junior Research Fellow, Centre for the Study of Regional Development, Jawaharlal Nehru University
Dr Sreekesh Sreedharan
Associate Professor, Centre for the Study of Regional Development,, Jawaharlal Nehru University
I have over 15 years research and teaching experience. Over 10 research reports to my credit and about 10 papers published in national and international journals as well as in edited books.