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All Journal Indonesian Journal of Environment and Sustainability Issues
Bogireddy, Chandra
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Environmental Science

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Drought Assessment Using the Standardized Precipitation Index and Its Association with Climate Anomalies in Kotabumi, West Lampung Ismail, M Rizky; Bogireddy, Chandra; Ofrial, Siti Anugrah Mulya Putri; Tiara
Indonesian Journal of Environment and Sustainability Issues Vol. 2 No. 1 (2025): June 2025 | Indonesian Journal of Environment and Sustainability Issues
Publisher : WISE Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70211/ijesi.v2i1.215

Abstract

This study assesses drought patterns in Kotabumi, West Lampung, Indonesia, using the Standardized Precipitation Index (SPI) at 1-month, 3-month, and 12-month time scales to analyze meteorological, seasonal, and hydrological droughts from 1999 to 2017. The research also explores the relationship between drought severity and global climate anomalies, particularly El Niño and La Niña (ENSO) events. Results show that short-term droughts commonly occur during the dry season (July–October), with several months experiencing extreme drought (SPI < -2.0), such as March 2016 and May 2017. Seasonal droughts, captured through SPI-3, revealed more persistent dry periods primarily in the second half of the year. Long-term analysis suggests that years like 2002, 2006, 2015, and 2016 were marked by sustained rainfall deficits. A clear correlation was found between SPI values and ENSO phases: El Niño years were associated with negative SPI values indicating drought, while La Niña years generally exhibited positive SPI values indicating wetter conditions. These findings demonstrate the effectiveness of SPI in drought monitoring and its utility in developing early warning systems and climate adaptation strategies in drought-prone regions.
Co-Authors M Rizky Ismail Ofrial, Siti Anugrah Mulya Putri Tiara