Vol. 6, Issue 5 (2018)
Annual and seasonal trend and variability of rainfall over five districts of northern hill region of Chhattisgarh
Author(s): Monika Mahilange and Gopi Krishna Das
Abstract: Long term rainfall data of 40 year from (1973-2015) at five districts viz. Balrampur, Jashpur, Koriya, Surajpur and Surguja districts of northern hill zone of Chhattisgarh has analyzed here to story the trend and variability analysis. The rainfall data collected from department of agrometeorology, IGKV Raipur. This data was analyzed by using weather cock and Mann Kandell software. Rainfall trend was also analyzed through linear regression line. The data revealed the average annual rainfall of (1146), (1396.6), (1235), (1215) and (1360.4) mm respectively for selected districts viz. Balrampur, Jashpur, Koriya, Surajpur and Surguja. When we compare the rainfall pattern of these five districts, a decreasing trend of annual rainfall was reported significant only in Balrampur and Koriya at 5% level of significance. Seasonal (south west monsoon) rainfall trend has been showing a significantly decreasing trend at Jashpur and Koriya at 5% level of significance. When we estimate the coefficient of variation, it has been found highest 28.06% in Surajpur district with least amount of rainfall while it was least (18.20%) in Jashpur district and it was almost similar in Balrampur 26.89% Korea 27.02 and Surguja 26.12% in general the annual CV varried from 18-29%. The coefficient of variation of rainfall shows bellow 50% at all the five districts. South west monsoon season was found least variation with highest rainfall in all the districts.
Pages: 3306-3310 | 680 Views 95 Downloads
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How to cite this article:
Monika Mahilange, Gopi Krishna Das. Annual and seasonal trend and variability of rainfall over five districts of northern hill region of Chhattisgarh. Int J Chem Stud 2018;6(5):3306-3310.
