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Meteorological Drought Analysis Using Standardized Precipitation Index

Parthsarthi Pandya1 * , Rohit Kumarkhaniya1 , Ravina Parmar1 and Piyush Ajani1

Corresponding author Email: parthsarthi41@gmail.com

DOI: http://dx.doi.org/10.12944/CWE.15.3.12

Drought is a natural hazard which is challenging to quantify in terms of severity, duration, areal extent and impact. The present study was aimed to assess the meteorological drought for Junagadh (Gujarat), India using Standardized Precipitation Index (SPI) and evaluate its correlation with the productivity of Groundnut and Cotton. The SPI was computed for eight durations including monthly (June to August each), 3 monthly (June to August and July to September) and 6 monthly (June to November) time scales for the year1988 to 2018. The results revealed that 54% to 67% of years suffered from drought for SPI-1. Drought years based on SPI-3 and SPI-6 were 48 % to 58%. Among all the eight durations, mild drought was the most dominant drought category. Years 1993, 1999, 2002 and 2012 experienced the most severe droughts for Junagadh. Severe droughts were observed only for SPI-1 (July), SPI-3 and SPI-6. No extreme drought was witnessed in Junagadh. Correlation of groundnut yield with SPI was higher as compared to cotton for all time scales. Kharif groundnut and cotton yield were better correlated with SPI-3 and SPI-6 for Junagadh with significant correlation coefficient ranging from 0.57 to 0.79 for groundnut and 0.46 to 0.56 for cotton. Among monthly SPI, the significantly highest correlation was found for June (0.59) for groundnut and September (0.48) for cotton. The SPI-3 and SPI-6 shown ability to quantify the drought and also shown the potential of yield prediction.

Cotton; Drought Analysis; Groundnut; Junagadh; Standardized Precipitation Index; Yield Correlation

Copy the following to cite this article:

Pandya P, Kumarkhaniya R, Parmar R, Ajani P. Meteorological Drought Analysis Using Standardized Precipitation Index. Curr World Environ 2020;15(3).

DOI:http://dx.doi.org/10.12944/CWE.15.3.12

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Pandya P, Kumarkhaniya R, Parmar R, Ajani P. Meteorological Drought Analysis Using Standardized Precipitation Index. Curr World Environ 2020;15(3). Available From: https://bit.ly/3kZ9Srs

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