Meteorological drought analysis using multi-scalar SPEI and Copula theory for Jaisalmer district of Rajasthan, India

Drought is a natural disaster of creeping phenomenon which difficulty to understand. This study utilizes multi-scalar SPEI and copula theory analyze the meteorological drought in Jaisalmer district Rajasthan, India. Several marginal distributions are fitted duration severity. Archimedean Metaelliptical copulas used construct bivariate probability distributions. The univariate return periods calculated identify associate risks. results this can provide effective information for area assess risk contribute decision-making process reduce associated result optimizing allocation water resources impact on future.