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Temporal and spatial characteristics of drought, future changes and possible drivers over Upper Awash Basin, Ethiopia, using SPI and SPEI

Author

Listed:
  • Haftu Brhane Gebremichael

    (Haramaya University)

  • Gelana Amente Raba

    (Haramaya University)

  • Kassahun Ture Beketie

    (College of Natural and Computational Sciences Addis Ababa University)

  • Gudina Legese Feyisa

    (College of Natural and Computational Sciences Addis Ababa University)

Abstract

Drought is a global problem that affects particularly agricultural and water resources. The spatiotemporal drought characteristics and their possible drivers over Upper Awash Basin (UAB) were assessed in magnitude, duration, frequency, and intensity. Gridded data and a statistical downscaling model (SDSM) were used for historical projection. The Standardized Precipitation Index (SPI) and Standardized Evapotranspiration Index (SPEI) at 4- and 12-month timescales were used to compute the drought. The SPI 4-and 12-months indicate 1984, 1987, 2002, 2015, and 2016 years of dominant drought. Persistent dry events were observed in the west, northwestern, and some eastern parts of the study area in Representative Concentration Pathways (RCP) 4.5 and 8.5 scenarios. Trend analysis of seasonal shows that a statistically significant (P

Suggested Citation

  • Haftu Brhane Gebremichael & Gelana Amente Raba & Kassahun Ture Beketie & Gudina Legese Feyisa, 2024. "Temporal and spatial characteristics of drought, future changes and possible drivers over Upper Awash Basin, Ethiopia, using SPI and SPEI," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 26(1), pages 947-985, January.
    • Handle: RePEc:spr:endesu:v:26:y:2024:i:1:d:10.1007_s10668-022-02743-3
    DOI: 10.1007/s10668-022-02743-3
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    References listed on IDEAS

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    1. Peña-Guerrero, Mayra Daniela & Nauditt, Alexandra & Muñoz-Robles, Carlos & Ribbe, Lars & Meza, Francisco, 2020. "Drought impacts on water quality and potential implications for agricultural production in the Maipo River Basin, Central Chile," EconStor Open Access Articles and Book Chapters, ZBW - Leibniz Information Centre for Economics, vol. 65(6), pages 1005-1021.
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