Trend Analysis of Rainfall and Rainy Days using Mann Kendall Method and Sen’s Slope Estimator Atpadi Tahsil of Sangli District of Maharashtra

Abstract

The study has been carried out to investigate and assess the significance of the potential trend of rainfall and rainy days over the Atpadi tahsil of Sangli district of Maharashtra. In this study, trend analysis has been carried out on annual, seasonal, monthly and weekly basis using the data period between 1982 to 2018 for rainfall and rainy days. Mann-Kendall test and Sen's slope estimate test were applied to identify the existing trend direction and Sen's slope estimator test were used to detect the trend direction and magnitude of change over time. The test results showed increasing rainfall and rainy days trend over the Atpadi tahsil for annual, seasonal (winter and southwest monsoon), monthly (June, August and September) and weekly (MW23, MW25, MW27, MW31, MW34-MW37, MW42 and MW46) time series.