http://197.159.135.214/jspui/handle/123456789/1 A research article reports the results of original research, assesses its contribution to the body of knowledge in a given area, and is published in a peer-reviewed scholarly journal. Research publications through published and on-going articles/researches are captured in this community 2026-08-12T02:33:35Z http://197.159.135.214/jspui/handle/123456789/1346 Improving the sustainability and effectiveness of photovoltaic evaporative cooling greenhouse in the Sahel Alio Sanda, Djibrilla M.; Adamou, Rabani; Karimoun, M. Illyassou; H. Abdoulkader, Atto; Yaye Aissetou, Drame Anthropogenic climate change has caused worldwide extreme weather events including droughts, floods and heatwaves. It disproportionately affects developing countries through food insecurity. Greenhouse is important and relevant to the food-energy-water security in many regions. This study investigates the thermal behavior of photovoltaic evaporative cooling greenhouse made with ecofriendly coolers. The cooling potential of local plant materials was assessed under ambient conditions. Experimental thermal data obtained from optimized evaporative cooling system equipped with Hyphaene thebaica fibers (HF-pad) and conventional Celdek pad (C-pad), were used in heat and mass transfer equations to derive the greenhouse cooling performances. Computational fluid dynamics analysis software was used to investigate the refrigerant fluid distribution in the greenhouse. Cooler using HF-pad allows to keep the microclimate below 25 °C, with maximum moisture rate up to 80%, under harsh ambient conditions (temperature: 30–45 °C, humidity: 10–15%). HF-pad had the highest cooling coefficient of performance (COP = 9 against 6 for C-pad), the best cost to efficiency ratio (CER = 5; 4 times less than C-pad) and the lowest outlet temperature (20.0 °C). Due to higher outlet air velocity (1.116 m/s against 0.825 m/s for HF-pad), C-pad cooler spread cool air (20.5 °C) up to 1.25 m farther than its counterpart, creating higher pressure in the atmosphere (1.42 Pa against 0.71 Pa), with 2 times turbulent kinetic energy (0.014 J/kg). HF-pad presented cooling performances that compete with conventional pads. Moreover, optimization of HF-pad frame engineering and the technology scaling up to industrial level can allow better thermal and economic performances. A Publication submitted to the West African Science Service Centre on Climate Change and Adapted Land Use and the Université Abdou Moumouni, Niger in partial fulfillment of the requirements for the degree of Master of Science Degree in Climate Change and Energy 2024-05-16T00:00:00Z http://197.159.135.214/jspui/handle/123456789/1345 Impact of COVID-19 on Electricity Supply-Demand in West-Africa Odou, Oluwarotimi Delano Thierry; N’diaye, Aissatou; Kondi Akara, Ghafi; Sawadogo, Windmanagda; Bonkaney, Abdou Latif; Atchikpae, Tchègoun Michel; Adamou, Rabani COVID-19 has been an unprecedented situation that disrupted the stability of many socioeconomic dynamics all over the world and in particular on the energy sector in West-Africa. This study seeks to provide technical based analysis to inform policy decision-making and experts in the sector on how the pandemic impacted the countries in the region and actions to reduce vulnerability. This study analyses the impact of COVID-19 on Electricity Supply- Demand in Benin, Togo, Côte d’Ivoire, Senegal and Niger using both quantitative and qualitative data. The latter is based on semi-structured interviews targeting power utilities in these countries. A comparative assessment is conducted between the observed consumption and forecasted in 2020. Advanced forecasting methods with machine learning algorithms are explored including ARIMA, Prophet, ETS, TBATS, NNAR, GLMNET, Random Forest and hybrid ones which are regressed with climatic factors (temperature, humidity and solar radiation) and calendar effect (working days). The best models after the performance evaluation are the NNAR and GLMNET which show good measure compared to others. The assessment shows globally that despite the pandemic the demand has risen above forecast averaging 3.28%. Three distinct periods can be discerned from the time series: a pre-COVID where the demand rose in all countries, and slowed down as the pandemic intensified (in COVID period) and the post COVID period where the consumption rose up back as a result of the release of restriction measures (economic recovery). From one country to another, the recovery time can be longer or shorter. A Publication submitted to the West African Science Service Centre on Climate Change and Adapted Land Use and the Université Abdou Moumouni, Niger in partial fulfillment of the requirements for the degree of Master of Science Degree in Climate Change and Energy 2022-10-01T00:00:00Z http://197.159.135.214/jspui/handle/123456789/1344 Projected Changes in Solar PV and Wind Energy Potential over West Africa: An Analysis of CORDEX-CORE Simulations Ndiaye, Aissatou; Moussa, Mounkaila Saley; Dione, Cheikh; Sawadogo, Windmanagda; Bliefernicht, Jan; Dungall, Laouali; Kunstmann, Harald Renewable energy development is growing fast and is expected to expand in the next decades in West Africa as a contribution to addressing the power demand and climate change mitigation. However, the future impacts of climate change on solar PV and the wind energy potential in the region are still unclear. This study investigates the expected future impacts of climate change on solar PV and wind energy potential over West Africa using an ensemble of three regional climate models (RCMs). Each RCM is driven by three global climate models (GCMs) from the new coordinated high-resolution output for regional evaluations (CORDEX-CORE) under the RCP8.5 scenario. Two projection periods were used: the near future (2021–2050) and the far future (2071–2100). For the model evaluation, reanalysis data from ERA5 and satellite-based climate data (SARAH-2) were used. The models and their ensemble mean (hereafter Mean) show acceptable performance for the simulations of the solar PV potential, the wind power density, and related variables with some biases. The Mean predicts a general decrease in the solar PV potential over the region of about −2% in the near future and −4% in the far future. The wind power density (WPD) is expected to increase by about 20% in the near future and 40% in the far future. The changes for solar PV potential seem to be consistent, although the intensity differs according to the RCM used. For the WPD, there are some discrepancies among the RCMs in terms of intensity and direction. This study can guide governments and policymakers in decision making for future solar and wind energy projects in the region. A Publication submitted to the West African Science Service Centre on Climate Change and Adapted Land Use and the Université Abdou Moumouni, Niger in partial fulfillment of the requirements for the degree of Master of Science Degree in Climate Change and Energy 2022-12-17T00:00:00Z http://197.159.135.214/jspui/handle/123456789/1343 Powering decisions: A case study of weather and climate services in Senegal’s energy sector Ndiaye, Aissatou; Bliefernicht, Jan; Lamptey, Lamptey; Kunstmann, Harald Climate services are essential inputs for decision-makers in the energy industry to improve the energy system’s resilience to weather and climate variability and change. The impacts of climate change on the energy system have been discussed over the past decades, and appropriate weather and climate services will help minimize the effects by strengthening resilience and adaptive capacity in the energy sector. However, despite the increasing recognition of their importance, weather and climate services tailored to the energy sector remain limited in West Africa. Climate services assessment for the energy sector is scarce in West Africa. This study presents a case study of the current state of weather and climate services for the energy sector in Senegal based on interview results. The information was collected through a face-to-face interview, which allows direct interaction with the experts. A total of seventeen experts participated in the interview, all working in the energy (thermal, solar, wind) and meteorological sectors. The data was analyzed to identify common themes and patterns. The results from this study show a lack of collaboration between institutions. A need for better communication and exchange between the National Meteorological Office and the energy sector was identified. It also emerged from the interview that most of the participants from the energy sector are willing to receive tailored weather and climate services from the National Meteorological Office. This information is useful for decision-makers to address gaps and improve the energy sector’s resilience. A Publication submitted to the West African Science Service Centre on Climate Change and Adapted Land Use and the Université Abdou Moumouni, Niger in partial fulfillment of the requirements for the degree of Master of Science Degree in Climate Change and Energy 2026-03-31T00:00:00Z