Future changes in precipitation, evapotranspiration and streamflows in the Mono Basin of West Africa
<p>The impact of climate change on precipitation and water availability is of major concern for policy makers in the Mono Basin of West Africa, whose economy mainly depends on rainfed agriculture and hydropower generation. The objective of this study is to project rainfall, flows and evapotran...
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| Autores principales: | , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Copernicus Publications
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/6c118ad4b16b473f8c523691eaaeb7cf |
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| Sumario: | <p>The impact of climate change on precipitation and water availability is of
major concern for policy makers in the Mono Basin of West Africa, whose
economy mainly depends on rainfed agriculture and hydropower generation. The
objective of this study is to project rainfall, flows and evapotranspiration
(ET) in the future period and understand their changes across Mono River
Basin. Observed data were considered for the historical period 1980–2010,
and a Multi-model ensemble for future projections data of eight selected
Regional Climate Models under RCP 4.5 and RCP 8.5 over the periods 2011–2100
was used. The GR4J model was used to simulate daily flows of the Mono
watershed. The ensemble mean shows a decrease and increase streamflows
between <span class="inline-formula">−54</span> % and 42 %, <span class="inline-formula">−58</span> % and 31 % under the RCP4.5, RCP8.5 scenario,
respectively. The greatest decreases of high flows is projected to occur in
the near term under RCP8.5, whereas the greatest decrease of low flows is
projected to occur in the long term under the same RCP. For the rainfall and
ET, the both scenarios (RCP4.5 and RCP8.5) predict an increase of ET while
the rainfall will decrease. The results of this study of would be very
useful in the choice of management and adaptation policies for water
resources management.</p> |
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