Statistical and temporal trends analysis of rainfall in Bundelkhand region, Central India

Abstract

Three timescale i.e. monthly, seasonal and annual rainfall data of Bundelkhand region, Central India, was analyzed for 40 years (1981-2020). The annual mean average rainfall for the region ranges between 657.7 mm and 1146.4 mm for the studied period with the month August receiving the highest amount of rainfall. The region receives about 90 % of its annual rainfall during South West Monsoon period i.e. from June to September. Temporal trend of rainfall for different timescale was analysed using nonparametric Mann-Kendall test and Sen’s slope estimator. Increasing and decreasing trend were found for the three timescale in which the study was carried out. Annual rainfall trend of Bundelkhand region is found to follow decreasing trend except for Sagar district. A decreasing South West Monsoon rainfall trend was also observed in 11 districts of Bundelkhand region.

Study on Pattern of Rainfall and its Effect in the Chhatarpur (M.P), India

“…The uneven distribution of rainfall and high spatial variability lead to high rainfall in one region and dry spells in another region. The studies that were made by the researchers showed decreasing trends in rainfall patterns across the Chhatarpur region [8,9]. Various statistical methods were used to identify the rainfall patterns and number of rainy days.…”