Abstract
Droughts are natural phenomena that occur when the distribution of rainfall is below the average. It is usually triggered by factors such as climate change and human actions and they are classified as meteorological, agricultural, hydrological and socioeconomic droughts. The study focused on the meteorological drought in the Palamu district of Jharkhand based on the Reconnaissance drought index (RDI) from 1985 to 2020. The precipitation datasets were obtained from CHIRPS while the temperature data was acquired from ERA5 re-analysis. The RDI calculates drought based on precipitation and potential evapotranspiration (PET) data. Further, the DrinC software was used to calculate PET in which RDI values were calculated at 3 and 6 month time scale and results revealed that the study area has faced moderate to extreme events. However, in years 1992, 1993, 2006, 2009 and 2015 extreme drought events were observed. Therefore, due to high sensitivity of RDI, the droughts events were evaluated and its spatial distribution was mapped at different time scale. The results from the study can be beneficial for monitoring and planning strategies related to mitigating drought risk.
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