Trend analysis of rainfall and rainy days using Mann Kendall method and sen’s slope estimator in Tasgaon Tahsil of Sangli District of Maharashtra (India)

Abstract

The study has been carried out to investigate and assess the significance of the potential trend of rainfall and rainy days over the Tasgaon tahsil of Sangli district of Maharashtra. In this study, trend analysis has been carried out on annual, seasonal and monthly basis using the data period between 1961 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 decreasing rainfall and rainy days trend over the Tasgaon tahsil for annual, seasonal and monthly (May to November) time series.