Assessing Rainfall and Temperature Variability in the Upper Watrak River Basin: A Spatio-Temporal Approach

Abstract

Climatic variability continuously affects the globe. From the last two-three decades, industrialisation and urbanization the greenhouse gases continuously rise. Because of that the hydro-metrological parameters are continuously changing their characteristics. It is necessary to understand the characteristics and change patterns of this parameter. Trend analysis is the technique for it. Various parametric and non-parametric tests were used for trend analysis globally. The present work is carried out non-parametric trend analysis. The hydro-metrological parameters such as (1) precipitation, (2) maximum temperature, and (3) minimum temperature done over the upper Watrak River Basin using 24 IMD Gridded station data set. This study is beneficial in understanding the impact of climate change and climate variability on rainfall dynamics across the study area, which may further guide the policymakers and beneficiaries for opti- mizing the use of hydrological resources.

Keywords: climate change (CC), trend analysis, M-K method, Sen’s slope method, ITA’s method