National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The study of rainfall trends is very important for any place whose food security and economy are dependent on the timely availability of water. In this work monthly, seasonal and annual trends of rainfall have been studied over Pattambi region using rainfall data of 35 years (1983-2017). Mann-Kendall analysis and Sen’s slope estimator are used for the trend analysis. The results of the study indicated that the rising trend was observed in the months of February, March, April, May, September, October and December months whereas the falling trend was seen in January, June, July, August and November months. There was no significant trend observed in any of the months at 5% level of significance. There was a significant trend observed in the summer season and no significant trend was seen in the remaining seasons. The results of the trend analysis using Sen’s slope estimator revealed that the annual rainfall was observed as falling trend. There was a falling trend observed in South-West monsoon and North-East monsoon seasons and rising trend in summer season. The winter season does not showed any trend as the estimated Sen’s slope was zero.
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