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Meteorological drought analysis with different indices for the Betwa River basin, India

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Abstract

Climate change is adversely affecting the development, management, and planning of surface and groundwater resources. The meteorological drought becomes a severe natural problem, and it can occur in any climatic region of the world. Thus, monitoring and minimizing drought is crucial for analyzing and predicting drought impacts. The meteorological drought is considered basin or region-specific since atmospheric conditions are highly variable from region to region. However, agricultural drought links the various characteristics of hydrological or meteorological drought to agricultural impacts focusing on groundwater deficit, soil moisture deficit, etc. A single drought index cannot assess each aspect of the meteorological drought. In this study, we considered seven drought indices such as the Standardized Precipitation Index (SPI), China Z Index (CZI), Modified China Z Index (MCZI), Percent Normal Drought Index (PNI), Deciles Index (DI), Rainfall Anomaly Index (RAI), and Z-score Index (ZSI). The drought was analyzed for 3, 6, 9, and 12 months’ time step, and drought classification and threshold values were estimated. SPI showed maximum correlation values (0.389, 0.412, 0.560, and 0.996) for 3, 6, 9, and 12 month time steps compared to the other drought indices. The value of correlation is increased with the increase in time step for all drought indices; therefore, the accuracy of drought assessment also increases with an increase in time step. The Mann–Kendall’s trend test was analyzed at a 5% significance level for drought assessments. The drought magnitude and the severity of the Betwa River basin were estimated based on the meteorological data (Rainfall) from 1970 to 2014.

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Data availability

All data used in the study are freely available on http://www.mpwrd.gov.in/betwa-basin website.

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No code was developed in the current study.

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Acknowledgements

The authors would like to thank anonymous reviewers for giving valuable suggestions to improve the quality of the paper.

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Uttam Singh contributed in conceptualization, methodology, resources, writing (original draft), and analysis. Pooja Agrawal contributed in data curation and formal analysis. Pramod Kumar Sharma contributed in writing (review and editing).

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Correspondence to Uttam Singh.

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Singh, U., Agarwal, P. & Sharma, P.K. Meteorological drought analysis with different indices for the Betwa River basin, India. Theor Appl Climatol 148, 1741–1754 (2022). https://doi.org/10.1007/s00704-022-04027-2

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  • DOI: https://doi.org/10.1007/s00704-022-04027-2

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