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- W2984588446 abstract "Ethiopia is endowed with water than many drought-prone countries in the world and yet is being battered by extremes of drought affecting the livelihoods of many and increasing famine across the country. This chapter analyzes drought characteristics in Ethiopia based on meteorological variables. Standardized precipitation index (SPI) is used for temporal and spatial analyses of meteorological drought and the concept of drought magnitude using SPI is used to define hydrological drought by considering the dry spells and extent of drought intensity. The spatial assessment of meteorological drought showed multiple severity levels both dry and wet events, with respect to the areal extent for all years in the study period. Yearly analysis identified six prominent drought years using the SPI. The monthly drought analysis for all six prominent drought years showed that it was not the lack of precipitation throughout the drought years that caused the drastic effects, but the seasonal effect of the observed precipitation. The magnitude of drought also helps to understand the extent of the dry spells in the drought years. Drought frequency assessment, as an additional basis showed the frequency of the occurrence of the drought over the country. Severe and extreme drought showed less coverage than the mild and moderate droughts if the percentage of the frequency of occurrence is mapped. Finally, the overall analysis showed that the spatial and temporal variabilities of drought over the country have random, no trend, and drastic nature. And it should be mitigated with appropriate water harvesting and management strategy." @default.
- W2984588446 created "2019-11-22" @default.
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- W2984588446 date "2019-01-01" @default.
- W2984588446 modified "2023-09-27" @default.
- W2984588446 title "Drought in Ethiopia: Temporal and spatial characteristics" @default.
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- W2984588446 doi "https://doi.org/10.1016/b978-0-12-815998-9.00021-x" @default.
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