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Research Article Open access CC BY 4.0

Multi-temporal SPI and RDI Based on the Modified Meteorological Draught and Hydrological Drought of Marathwada Region of Maharashtra, India

Avanish Yadav, Ashish Krishna Yadav, Pramod Kumar Singh, Devendra Kumar

International Journal of Environment and Climate Change · pp. 1524–1536 · Published 31 Dec 2022

10.9734/ijecc/2022/v12i121596

Abstract

The meteorological and hydrological drought indices are mostly applying as a tool for observing changes in drought situations. In the present research work, evaluated the performance of two modified meteorological drought indices i.e. modified standardized precipitation index (SPIe) and modified recoinnaissance drought index (RDIe) and hydrological drought indices i.e stream-flow drought index (SDI). The effective precipitation was used instead of precipitation for modification of meteorological drought indices. The  assessment of drought trends at multi-temporal such as 1, 3, 6 and 12 months was done by using popular Mann-Kendall test and the probability and return period   of occurrence of severe and extreme drought condition of the meteorological and hydrological drought events. Finally results were non-significant trend (either positive or negative) at 95% confidence limit and the 43 years reoccurrence interval of extreme meteorological drought for Latur and Parabhani districts, the 10.75, 21.5 and 14.33 years return period of severe meteorological drought for Latur, Nanded and Parabhani districts. Also, the 18, 18 and 43 years reoccurrence interval of severe hydrological drought for Latur, Nanded and Parabhani districts was calculated.

SPIe RDIe SDI mann-kendall test probability return period

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