Articles | Volume 384
https://doi.org/10.5194/piahs-384-337-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/piahs-384-337-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Pre-conference publication
| 
16 Nov 2021
Pre-conference publication |
| 16 Nov 2021
| 16 Nov 2021
Impact of climate change on hydropower potential of the Lagdo dam, Benue River Basin, Northern Cameroon
Laboratory for Environmental Modeling and Atmospheric Physics,
Department of Physics, Faculty of Sciences, University of Yaounde, P.O. Box 812, Yaounde, Cameroon
André Lenouo
Department of Physics, Faculty of Science, University of Douala,
Douala, Cameroon
Clément Tchawoua
Laboratory of Mechanics, Department of Physics, Faculty of Sciences,
University of Yaounde, Yaounde, Cameroon
Christopher J. Lennard
Climate System Analysis Group, University of Cape Town, Cape Town,
South Africa
Ernest Amoussou
Laboratoire Pierre Pagney: Climat, Eau, Ecosystème et
Développement (LACEEDE), University of Parakou, Parakou, Benin
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Proc. IAHS, 385, 39–45, https://doi.org/10.5194/piahs-385-39-2024, https://doi.org/10.5194/piahs-385-39-2024, 2024
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Ernest Amoussou, Félix Toundé Amoussou, Aymar Yaovi Bossa, Domiho Japhet Kodja, Henri Sourou Totin Vodounon, Constant Houndénou, Valérie Borrell Estupina, Jean-Emmanuel Paturel, Gil Mahé, Christophe Cudennec, and Michel Boko
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For the next generation of Earth System Model runs to project future climate change, the scientific community considers new scenarios to succeed RCPs and SSPs. As a contribution to that debate, we reflect on relevant policy and scientific research questions and suggest categories for Representative Emission Pathways (REP). These categories are tailored to the Paris Agreement long-term temperature goal, high-risk outcomes in the absence of further climate policy and worlds “that could have been”.
Daniele Visioni, Ben Kravitz, Alan Robock, Simone Tilmes, Jim Haywood, Olivier Boucher, Mark Lawrence, Peter Irvine, Ulrike Niemeier, Lili Xia, Gabriel Chiodo, Chris Lennard, Shingo Watanabe, John C. Moore, and Helene Muri
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Geoengineering indicates methods aiming to reduce the temperature of the planet by means of reflecting back a part of the incoming radiation before it reaches the surface or allowing more of the planetary radiation to escape into space. It aims to produce modelling experiments that are easy to reproduce and compare with different climate models, in order to understand the potential impacts of these techniques. Here we assess its past successes and failures and talk about its future.
Jean Hounkpè, Djigbo F. Badou, Aymar Y. Bossa, Yacouba Yira, Julien Adounkpè, Eric A. Alamou, Emmanuel A. Lawin, Luc O. C. Sintondji, Abel A. Afouda, and Ernest Amoussou
Proc. IAHS, 384, 219–224, https://doi.org/10.5194/piahs-384-219-2021, https://doi.org/10.5194/piahs-384-219-2021, 2021
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Floods are natural disasters that widely affect people, goods, and ecosystems. Some efforts have been made in predicting floods at a short-term range. However, the usefulness of flood prediction increases as the time lead increases. This work investigated covariates useful for flood prediction several months ahead. Very good relationships were found between flood discharge and some climate indexes which could serve as a basis for seasonal flood forecasting in West Africa.
Yacouba Yira, Aymar Yaovi Bossa, Ernest Amoussou, Djigbo Félicien Badou, Jean Hounkpè, and Kpade Ozias Laurentin Hounkpatin
Proc. IAHS, 384, 275–281, https://doi.org/10.5194/piahs-384-275-2021, https://doi.org/10.5194/piahs-384-275-2021, 2021
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This study addresses the importance of integrating the effect of land use on soil infiltration rate into land use change impact modeling. Based on field measurements; soil parameterization is computed in a hydrological model using a refined soil map integrating land use change impact of soil infiltration rate and a classic soil map not considering this interaction. The results show that integrating land use related effects on soil properties renders LULC change scenarios more plausible.
Gil Mahé, Gamal Abdo, Ernest Amoussou, Telesphore Brou, Stephan Dietrich, Ahmed El Tayeb, Henny van Lanen, Mohamed Meddi, Anil Mishra, Didier Orange, Thi Phuong Quynh Le, Raphael Tshimanga, Patrick Valimba, Santiago Yepez, Andrew Ogilvie, and Oula Amrouni
Proc. IAHS, 384, 5–18, https://doi.org/10.5194/piahs-384-5-2021, https://doi.org/10.5194/piahs-384-5-2021, 2021
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The FRIEND-Water program (FWP) is the oldest and the most transverse program within the UNESCO IHP. It allows large communities of hydrologists to collaborate across borders on common shared data and scientific topics, addressed through 8 large world regions. Research priorities evolve according to the projections given by the member States during the IHP councils. FWP further activities follow the IHP IX program with the support of the Montpellier UNESCO Category II Center ICIREWAD.
Valentin Brice Ebodé, Gil Mahé, and Ernest Amoussou
Proc. IAHS, 384, 247–253, https://doi.org/10.5194/piahs-384-247-2021, https://doi.org/10.5194/piahs-384-247-2021, 2021
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The objective of this article is to assess recent trends of hydroclimatic quantities in Ogooue basin in the context of climate change. For this, the rainfall and discharges data of this basin were analyzed using the Pettitt test. The results of this study reveal a statistically significant decrease in runoff that the Pettitt test situates in 1972–73, but nothing like that for rainfall at this same time scale.
Valentin Brice Ebodé, Gil Mahé, and Ernest Amoussou
Proc. IAHS, 384, 261–267, https://doi.org/10.5194/piahs-384-261-2021, https://doi.org/10.5194/piahs-384-261-2021, 2021
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La sécheresse observée en Afrique tropicale vers la fin des années 1960, a également affecté le bassin de la Bénoué en Afrique centrale, avec une persistance remarquable qui s’est répercutée sur les écoulements. Les ruptures à la baisse ont été mises en évidence dans les séries hydropluviométriques de ce bassin au pas de temps annuel en 1970–71 (pluies) et 1971–72 (débits). Les déficits associés à cette rupture sont de −2,9 % pour les pluies et −14,2 % pour les débits.
Eliézer Iboukoun Biao, Ezéchiel Obada, Eric Adéchina Alamou, Josué Esdras Zandagba, Amédée Chabi, Ernest Amoussou, Julien Adounkpe, and Abel Afouda
Proc. IAHS, 384, 57–62, https://doi.org/10.5194/piahs-384-57-2021, https://doi.org/10.5194/piahs-384-57-2021, 2021
Lamboni Batablinlè, Lawin E. Agnidé, Kodja Domiho Japhet, Amoussou Ernest, and Vissin Expédit
Proc. IAHS, 384, 283–288, https://doi.org/10.5194/piahs-384-283-2021, https://doi.org/10.5194/piahs-384-283-2021, 2021
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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.
Salomon Obahoundje, Ernest Amoussou, Marc Youan Ta, Lazare Kouakou Kouassi, and Arona Diedhiou
Proc. IAHS, 384, 343–347, https://doi.org/10.5194/piahs-384-343-2021, https://doi.org/10.5194/piahs-384-343-2021, 2021
Ernest Amoussou, Gil Mahe, Oula Amrouni, Ansoumana Bodian, Christophe Cudennec, Stephan Dietrich, Domiho Japhet Kodja, and Expédit Wilfrid Vissin
Proc. IAHS, 384, 1–4, https://doi.org/10.5194/piahs-384-1-2021, https://doi.org/10.5194/piahs-384-1-2021, 2021
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This short paper is the preface of the PIAHS volume of the IAHS/UNESCO FRIEND-Water conference of Cotonou in November 2021.
Houteta Djan'na Koubodana, Kossi Atchonouglo, Julien G. Adounkpe, Ernest Amoussou, Domiho Japhet Kodja, Dambré Koungbanane, Koba Yaovi Afoudji, Yao Lombo, and Kossi E. Kpemoua
Proc. IAHS, 384, 63–68, https://doi.org/10.5194/piahs-384-63-2021, https://doi.org/10.5194/piahs-384-63-2021, 2021
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This study aims to assess simulated surface runoff before and after dam construction in the Mono catchment (West Africa) using two lumped models: GR4J (Rural Engineering with 4 Daily Parameters) and IHACRES (Identification of unit Hydrographs and Component flows from Rainfall, Evapotranspiration and Stream data) over two different periods (1964–1986 and 1988–2010). Daily rainfall, mean temperature, evapotranspiration and discharge in situ data were collected for the period 1964–2010.
Coffi Justin Noumon, Domiho Japhet Kodja, Ernest Amoussou, Luc O. Sintondji, Daouda Mama, and Euloge K. Agbossou
Proc. IAHS, 384, 99–105, https://doi.org/10.5194/piahs-384-99-2021, https://doi.org/10.5194/piahs-384-99-2021, 2021
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Le comblement et l’eutrophisation des retenues d’eau constituent des contraintes majeures pour les usages qu’en font les populations riveraines. L’étude bathymétrique a révélé une diminution moyenne de 0,116 m/an. Ce comblement s’explique par l’érosion, la dégradation du couvert végétal et le surpâturage. Les mesures directes de la qualité physique : le pH, la température et l’oxygène dissous ont permis d’évaluer le risque d’eutrophisation. Les eaux sont dans un état eutrophe.
Yves Tramblay, Nathalie Rouché, Jean-Emmanuel Paturel, Gil Mahé, Jean-François Boyer, Ernest Amoussou, Ansoumana Bodian, Honoré Dacosta, Hamouda Dakhlaoui, Alain Dezetter, Denis Hughes, Lahoucine Hanich, Christophe Peugeot, Raphael Tshimanga, and Patrick Lachassagne
Earth Syst. Sci. Data, 13, 1547–1560, https://doi.org/10.5194/essd-13-1547-2021, https://doi.org/10.5194/essd-13-1547-2021, 2021
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This dataset provides a set of hydrometric indices for about 1500 stations across Africa with daily discharge data. These indices represent mean flow characteristics and extremes (low flows and floods), allowing us to study the long-term evolution of hydrology in Africa and support the modeling efforts that aim at reducing the vulnerability of African countries to hydro-climatic variability.
Domiho Japhet Kodja, Arsène J. Sègla Akognongbé, Ernest Amoussou, Gil Mahé, E. Wilfrid Vissin, Jean-Emmanuel Paturel, and Constant Houndénou
Proc. IAHS, 383, 163–169, https://doi.org/10.5194/piahs-383-163-2020, https://doi.org/10.5194/piahs-383-163-2020, 2020
Ernest Amoussou, Henri S. Totin Vodounon, Expédit W. Vissin, Gil Mahé, and Marc Lucien Oyédé
Proc. IAHS, 377, 91–96, https://doi.org/10.5194/piahs-377-91-2018, https://doi.org/10.5194/piahs-377-91-2018, 2018
William J. Gutowski Jr., Filippo Giorgi, Bertrand Timbal, Anne Frigon, Daniela Jacob, Hyun-Suk Kang, Krishnan Raghavan, Boram Lee, Christopher Lennard, Grigory Nikulin, Eleanor O'Rourke, Michel Rixen, Silvina Solman, Tannecia Stephenson, and Fredolin Tangang
Geosci. Model Dev., 9, 4087–4095, https://doi.org/10.5194/gmd-9-4087-2016, https://doi.org/10.5194/gmd-9-4087-2016, 2016
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The Coordinated Regional Downscaling Experiment (CORDEX) is a diagnostic MIP in CMIP6. CORDEX builds on a foundation of previous downscaling intercomparison projects to provide a common framework for downscaling activities around the world. The CORDEX Regional Challenges provide a focus for downscaling research and a basis for making use of CMIP6 global output to produce downscaled projected changes in regional climates, and assess sources of uncertainties in the projections.
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Short summary
This study aims to assess the potential impacts of climate change on hydropower potential of the Lagdo dam. The results reveal that under global warming, the hydropower potential of the dam will decrease which is the result of the reduced precipitation and increase of PET, thus decrease in streamflow in the basin. This result will be take into account for future development planning in the basin.
This study aims to assess the potential impacts of climate change on hydropower potential of the...
