Future climate or land use? Attribution of changes in surface runoff in a typical Sahelian landscape
In this study, the Soil and Water Assessment Tool (SWAT) model is used to assess changes in surface runoff between the baseline (1995–2014) and future (2031–2050) periods in the Tougou watershed $(37~\mathrm{km}^{2})$ in Burkina Faso. The study uses a combination of land use maps (for current and fu...
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| Language: | English |
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Académie des sciences
2023-01-01
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| Series: | Comptes Rendus. Géoscience |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.179/ |
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| author | Yonaba, Roland Mounirou, Lawani Adjadi Tazen, Fowé Koïta, Mahamadou Biaou, Angelbert Chabi Zouré, Cheick Oumar Queloz, Pierre Karambiri, Harouna Yacouba, Hamma |
| author_facet | Yonaba, Roland Mounirou, Lawani Adjadi Tazen, Fowé Koïta, Mahamadou Biaou, Angelbert Chabi Zouré, Cheick Oumar Queloz, Pierre Karambiri, Harouna Yacouba, Hamma |
| author_sort | Yonaba, Roland |
| collection | DOAJ |
| description | In this study, the Soil and Water Assessment Tool (SWAT) model is used to assess changes in surface runoff between the baseline (1995–2014) and future (2031–2050) periods in the Tougou watershed $(37~\mathrm{km}^{2})$ in Burkina Faso. The study uses a combination of land use maps (for current and future periods) and a bias-corrected ensemble of 9 CMIP6 climate models, under two warming scenarios. An increase in rainfall (13.7% to 18.8%) is projected, which is the major contributor to the increase in surface runoff (24.2% to 34.3%). The land use change narrative (i.e. conversion of bare areas to croplands) is expected to decrease in surface runoff, albeit minor in comparison to the effect of future climate change. Similar findings are observed for annual maximum surface runoff. This study sheds light on the need to consider simultaneously future climate and land use in framing water management policies. |
| format | Article |
| id | doaj-art-17cff95f65244a51a0ee9ea0b7ac7865 |
| institution | Kabale University |
| issn | 1778-7025 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Géoscience |
| spelling | doaj-art-17cff95f65244a51a0ee9ea0b7ac78652025-02-07T10:40:14ZengAcadémie des sciencesComptes Rendus. Géoscience1778-70252023-01-01355S141143810.5802/crgeos.17910.5802/crgeos.179Future climate or land use? Attribution of changes in surface runoff in a typical Sahelian landscapeYonaba, Roland0https://orcid.org/0000-0002-3835-9559Mounirou, Lawani Adjadi1https://orcid.org/0000-0002-6092-0234Tazen, Fowé2https://orcid.org/0000-0002-5586-8881Koïta, Mahamadou3https://orcid.org/0000-0001-8843-349XBiaou, Angelbert Chabi4https://orcid.org/0000-0002-1911-1179Zouré, Cheick Oumar5https://orcid.org/0000-0002-2355-3818Queloz, Pierre6https://orcid.org/0000-0003-0756-3351Karambiri, Harouna7https://orcid.org/0000-0003-4835-1427Yacouba, Hamma8Laboratoire Eau, Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), 01 BP 594 Ouagadougou 01, Burkina FasoLaboratoire Eau, Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), 01 BP 594 Ouagadougou 01, Burkina FasoLaboratoire Eau, Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), 01 BP 594 Ouagadougou 01, Burkina FasoLaboratoire Eau, Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), 01 BP 594 Ouagadougou 01, Burkina FasoLaboratoire Eau, Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), 01 BP 594 Ouagadougou 01, Burkina FasoLaboratoire Eau, Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), 01 BP 594 Ouagadougou 01, Burkina FasoInstitute of Territorial Engineering (INSIT), School of Management and Engineering Vaud (HEIG-VD), Yverdon-les-Bains, SwitzerlandLaboratoire Eau, Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), 01 BP 594 Ouagadougou 01, Burkina FasoLaboratoire Eau, Hydro-Systèmes et Agriculture (LEHSA), Institut International d’Ingénierie de l’Eau et de l’Environnement (2iE), 01 BP 594 Ouagadougou 01, Burkina FasoIn this study, the Soil and Water Assessment Tool (SWAT) model is used to assess changes in surface runoff between the baseline (1995–2014) and future (2031–2050) periods in the Tougou watershed $(37~\mathrm{km}^{2})$ in Burkina Faso. The study uses a combination of land use maps (for current and future periods) and a bias-corrected ensemble of 9 CMIP6 climate models, under two warming scenarios. An increase in rainfall (13.7% to 18.8%) is projected, which is the major contributor to the increase in surface runoff (24.2% to 34.3%). The land use change narrative (i.e. conversion of bare areas to croplands) is expected to decrease in surface runoff, albeit minor in comparison to the effect of future climate change. Similar findings are observed for annual maximum surface runoff. This study sheds light on the need to consider simultaneously future climate and land use in framing water management policies.https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.179/Climate changeHydrological modellingLand use/land cover changeSahelSurface runoffSWATTougou watershed |
| spellingShingle | Yonaba, Roland Mounirou, Lawani Adjadi Tazen, Fowé Koïta, Mahamadou Biaou, Angelbert Chabi Zouré, Cheick Oumar Queloz, Pierre Karambiri, Harouna Yacouba, Hamma Future climate or land use? Attribution of changes in surface runoff in a typical Sahelian landscape Comptes Rendus. Géoscience Climate change Hydrological modelling Land use/land cover change Sahel Surface runoff SWAT Tougou watershed |
| title | Future climate or land use? Attribution of changes in surface runoff in a typical Sahelian landscape |
| title_full | Future climate or land use? Attribution of changes in surface runoff in a typical Sahelian landscape |
| title_fullStr | Future climate or land use? Attribution of changes in surface runoff in a typical Sahelian landscape |
| title_full_unstemmed | Future climate or land use? Attribution of changes in surface runoff in a typical Sahelian landscape |
| title_short | Future climate or land use? Attribution of changes in surface runoff in a typical Sahelian landscape |
| title_sort | future climate or land use attribution of changes in surface runoff in a typical sahelian landscape |
| topic | Climate change Hydrological modelling Land use/land cover change Sahel Surface runoff SWAT Tougou watershed |
| url | https://comptes-rendus.academie-sciences.fr/geoscience/articles/10.5802/crgeos.179/ |
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