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Water Scarcity in Conakry, Guinea: Challenges and Proposed Strategies for a Way Forward

Journal of Water Resource and Protection 2024年第4期16卷 264-280页

作者： bernard lassimo diawara Gerald D. S. Quoie Jr Zhuo Li Justin Junior Loua College of Environmental Science and Engineering Tongji University Shanghai China UNEP-Tongji Institute of Environment for Sustainable Development Tongji University Shanghai China State Key Laboratory of Pollution Control and Resources Reuse Tongji University Shanghai China Business School Sichuan University Chengdu China

The capital of Guinea, Conakry, faces a notable difficulty due to a water shortage, which is worsened by the rapid increase in population and urban development. The Guinean Water Company (SEG) faces challenges in supplying water to the entire city due to its limited area of approximately 420 km2 and a population of 2 million. Moreover, the population growth rate is anticipated to increase dramatically, exacerbating the difficulty of fulfilling future water requirements. As a result, this study employs data from the Knoema website and the Institute of National Statistics of Guinea (INS) to examine the water production and distribution process by the SEG. The study examines the challenges related to water scarcity in Conakry and suggests strategies to assist the city in managing the present circumstances and planning for the future. The primary objective is to get a long-lasting water supply and uphold water quality to advance public health.

关键词： Water Scarcity Conakry Population Growth SDGs SEG

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Assessment of Regional Climate Models over Côte D'Ivoire and Analysis of Future Projections over West Africa

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Atmospheric and Climate Sciences 2015年第2期5卷 63-81页

作者： Kouakou Kouadio Abdourahamane Konare Adama diawara bernard Kouakou Dje Vincent Olanrewaju Ajayi Arona Diedhiou Laboratoire de Physique de l’Atmosphère et Mécanique de Fluide (LAPA-MF) Université Felix Houphou&#235t-Boigny Abidjan C&#244te d’Ivoire Laboratoire de Physique de l’Atmosphère et Mécanique de Fluide (LAPA-MF) Université Felix Houphou&#235t-Boigny Abidjan d’Ivoire Société d’exploitation et développement Aéroportuaire et Météorologique Abidjan C&#244te d’Ivoire WASCAL Graduate Research Program on West African Climate System (GRP-WACS) Federal University of Technology Akure (FUTA) Akure Nigeria LTHE-IRD Université de Grenoble Grenoble France

The ability of six Regional Climate Models (RCMs) used in AMMA-ENSEMBLES project is assessed over six meteorological stations in Côte d’Ivoire. The ensemble mean of the models is also used for the prediction of climate change over West Africa. The study focused on two periods: the period 1995-2005, the present-day simulations, is used to evaluate the skills of the models over the country and the years 2010-2013, for assessment of the future climate change scenario used. The results show that the skills of the models vary from one station to another and from one season to another. None of the models considered, presents an excellent performance over the entire country and in all the seasons. Generally, the ensemble mean of all the models presents better results when compared with the observation. These results suggest that the choice of any model for study over the country may depend on the focus of interest: intensity or variability of the rain and also on area of interest. The projection for 2020-2040, future climate change over West Africa shows that the Sahel exhibits a tendency to be drier while wetter Guinean coast is observed.

关键词： AMMA Ensembles West Africa Monsoon Regional Climate Models Precipitation

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Evaluating the Impacts of Climate Variability on Cocoa Production in the Western Centre of Cote d’Ivoire during 1979-2010

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Atmospheric and Climate Sciences 2023年第2期13卷 201-224页

作者： Fidèle Yoroba Kouakou Kouadio Benjamin Komenan Kouassi Madina Doumbia Adama diawara bernard K. Dje Edward Naabil Dro Touré Tiemoko Laboratory of Atmosphere Physic and Mechanic Fluids (LAPA-MF) University Felix Houphouet-Boigny UFR SSMT Abidjan C&#244te d’Ivoire Geophysical Station of Lamto (GSL) N’Douci C&#244te d’Ivoire Department of Mathematics Physics Chemistry (MPC) University Péléforo Gbon Coulibaly of KORHOGO Korhogo C&#244te d’Ivoire Société d’exploitation et développement Aéroportuaire et Météorologique (SODEXAM) Abidjan C&#244te d’Ivoire Department of Agricultural Engineering Bolgatanga Technical University Bolgatanga Ghana Fundamental Applied Sciences (SFA) University Nangui Abrogoua Abidjan C&#244te d’Ivoire

Climate variability impacts on cocoa production are evaluated for the first time using 31 years (1979-2010) of data from SODEXAM (climate ground- based observations) and the ex-CAISTAB in three main cocoa production regions (Goh, Marahoué, and Haut-Sassandra) in the west-central part of Cote d’Ivoire. The work is a contribution to improving the quality of climate services dedicated to cocoa cultivation to ensure producers’ income and improve the yield of the production in the west-central part of Cote d’Ivoire. The results show that cocoa production is affected by the changes and variability in climate conditions (i.e. rainfall and temperature). In the Goh region, the increase in cocoa production seems to be mostly related to the augmentation of rainfall amount while in Marahoué, the increase in temperature is identified to have a more significant impact. Over the Haut-Sassandra region, both temperature and rainfall seem to have a considerable effect on the changes in cocoa production. The analysis based on linear regression by least-squares fit shows two characteristic modes (low and high-frequency variability) in the relationships between cocoa production and meteorological conditions suggesting a strong temporal signal impact related to the changes in the emblazoned surfaces. This leads to an important impact of the short-term variations of climate in cocoa production whereas, the influence of the long-term variability in climate on the cocoa yield seems marginal.

关键词： Agriculture Climate Cocoa Rainfall Air Temperature Cote d’Ivoire

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