Mamadou Drame

• PhD
• Cheikh Anta Diop University

This study offers a comprehensive analysis of the Sakal solar power plant in Senegal, focusing on optimizing energy production in Africa through the use of solar trackers compared to traditional fixed-panel installations. The initial assessment, based on actual data, demonstrates that the Sakal solar plant consistently produces an annual energy sur...

This study aims to optimize daily forecasts of the PM2.5 concentrations in Dakar, Senegal using a long short-term memory (LSTM) neural network model. Particulate matter, aggravated by factors such as dust, traffic, and industrialization, poses a serious threat to public health, especially in developing countries. Existing models such as the Autoreg...

Our work is based on in situ solar photometer measurements, the aim of which is to show the impact of typical days on the optical, microphysical and radiative properties of aerosols at the Ouagadougou site. To this end, a classification according to the atmospheric aerosol load defined by the aerosol optical depth (AOD) and the Angstrom coefficient...

Air quality in Africa has become a major public health issue. Initial assessments conducted in large African cities show that fine particle concentrations exceed the thresholds recommended by the World Health Organization (WHO). We have developed a mobile device using the Internet of Things (IoT) to monitor particulate pollution levels (PM10, PM2.5...

This study provides a climatological assessment of wind resources in Chad using 100-m wind data from the ERA5 reanalysis. The results highlight spatio-temporal variations in wind potential, Enabling the identification of climate zones suitable for wind farm development. Wind speeds range from 1.5 to 11 m/s, with increasing gradients from south to n...

The transition to renewable and sustainable energy sources is critical to solving the environmental and socioeconomic problems associated with the use of fossil fuels. This study uses an interdisciplinary approach to analyze the challenges and prospects of a sustainable energy transition in contexts with the recent discovery and exploitation of fos...

This study aims to evaluate the contribution of mobile solar panels at the Sakal solar plant in Senegal. The PVsyst model was used to simulate energy production, taking into account both fixed and mobile panel configurations. Initially, the PVsyst model was pre-validated for power plant configurations equipped with both fixed panels (Bokhol) and mo...

The objective of this study is to evaluate the clouds seasonal occurrence characteristics, and to estimate their impact on solar radiation in Mbour, Senegal, West Africa. Here, we use datasets from various sources including: i) observations from the Clouds and Earth’s Radiant Energy System satellite sensors, ii) in situ shortwave radiation measurem...

The objective of this work is to predict daily PM2.5 air quality in Dakar, Senegal using data from an automated measurement station integrated into a server using a data assimilation model. Initially, a 3-year data set was used to identify and validate an appropriate ARIMA data assimilation model. The data was split into an 80% training set and a 2...

The main objective of this study is to evaluate the seasonal performance of 20 MW solar power plants in Senegal. The analysis revealed notable seasonal variations in the performance of all stations. The most significant yields are recorded in spring, autumn and winter, with values ranging from 5 to 7.51 kWh/kWp/day for the reference yield and 4.02...

This study aims to evaluate the seasonal performance of six solar power plants in Senegal. Four of them, located in Bokhol, Sakal, Malicounda, and Kahone, have photovoltaic panels with a capacity of 20 MW, while the remaining two plants in TenMerina and Mekhe have panels with a capacity of 30 MW. To achieve this goal, the study real production data...

The study presented in this article focuses on the temporal dynamics of wind energy production at the Taïba Ndiaye wind farm in Senegal, with a capacity of 158.7 MW. The monthly and seasonal distribution of production shows a strong trend, with maximums recorded between December and May (winter and spring) at around 1800 MWh, and minimums between J...

Sub‐Saharan Africa has been the last continent to experience a significant number of cases in the novel Coronavirus (COVID‐19). Studies suggest that air pollution is related to COVID‐19 mortality; poor air quality has been linked to cardiovascular, cerebrovascular, and respiratory diseases, which are considered co‐morbidities linked to COVID‐19 dea...

L'objectif de cet article est d'une part de réaliser un dimensionnement d'une petite installation solaire autonome dans six stations au Sahel et d'autre part d'effectuer une étude financière pour ces différentes localités (Dakar, Niamey, Ouagadougou, Gaoua, Dori et N'Djamena). A partir des potentiels solaires mesurés sur ces stations, nous avons ef...

Agriculture is considered one of the most vulnerable sectors to climate change. In addition to rainfed agriculture, irrigated crops such as rice have been developed in recent decades along the Senegal River. This new crop requires reliable information and monitoring systems. Remote sensing data have proven to be very useful for mapping and monitori...

High air pollution is a major health risk. Heavy urbanisation favours the degradation of air quality in large cities such as Dakar. In this city, the annual rate of PM10 exposure in the city is above the threshold recommended by the World Health Organisation (WHO). However, in order to set up a national pollution monitoring network, our approach co...

Two dust samples were collected from the same solar panels on June, 2017 in Dakar. The first was sent to Ithemba Labs (South Africa) and the second to Lincon Nebraska University (USA) for structural and physical properties study. This work aims to evaluate the dust impact on PV efficiency. The study shows that these particles have a non-spherical s...

Studying the relationship between potential high-impact precipitation and crop yields can help us understand the impact of the intensification of the hydrological cycle on agricultural production. The objective of this study is to analyse the contribution of intra seasonal rainfall indicators, namely dry and wet spells, for predicting millet yields...

Previous work in the Caribbean and West Africa have shown that air samples taken during dust events contain microorganisms (bacteria, fungi, viruses), including human pathogens that can cause many respiratory diseases. To better understand the potential downstream effect of bacteria dust on human health and public ecosystems, it is important to cha...

In this study, the detection and characteristics of dry/wet spells (defined as episodes when precipitation is abnormally low or high compared to usual climatology) drawn from several datasets are compared for Senegal. Here, four datasets are based on satellite data (TRMM-3B42 V7, CMORPH V1.0, TAMSAT V3, and CHIRPS V2. 0), two on reanalysis products...

This work concerns the rainy season delay in Western of Africa toward Dakar area in the country of Senegal. Since 2006, continuous dry air intrusions from Western Sahara have been recorded in the lower layers at the beginning of the monsoon season from Western Sahara. This dust by indirect effect tends to inhibit convective systems. Here, we presen...

We identify bacteria types on collected dust samples in Dakar Senegal, a region that experiences frequent Saharan dust events. We use classical techniques to identify bacteria types from dust samples. Seventy-seven bacteria types are identified from samples collected by spatula and the QuickTake® 30 air sampling pump. The dominant groups in the fir...

In this work, we use existing particulate matter (PM) data from Dakar, Senegal, satellite aerosol optical depth (AOD) and the Weather Research and Forecasting (WRF) model to evaluate the role of dust transport from the Sahara and PM concentrations and exposure into other administrative districts of Senegal during 2015 and 2016. We also use data fro...

In this study, wet and dry spells over Senegal provided by four datasets based on satellite data (TRMM-3B42 V7, TAMSAT V3, CMORPH V1.0, CHIRPS V2.0), two fully based on (re)analyses (NCEP-CFSR, ERA5) and one was fully based on gauge observations (CPC Unified V1.0/RT) are compared with respect to observation datasets derived from 65 rain gauge netwo...

This modeling study is conducted to examine the potential impact of the reforestation (greenbelt) location (either in Sahel or in Guinean region) on West African summer climate system. To this end, three simulations using the regional climate model RegCM4 driven by ERA-Interim reanalysis were performed at 50 km horizontal resolution over a West Afr...

This paper is an assessment of aerosols impact on solar potential available in Burkina Faso in 2017. Three measurement stations were selected from the North to the South according to the climatic zones, with sites at Dori (14.035°N, 0.034°W) in the North, Ouagadougou (12.20°N, 1.40°W) in the Center and Gaoua (10.29°N, 3.25°W) in the Southwest, resp...

This study focuses on the ability of the global Land Data Assimilation System, LDAS-Monde, to improve the representation of land surface variables (LSVs) over Burkina-Faso through the joint assimilation of satellite derived surface soil moisture (SSM) and leaf area index (LAI) from January 2001 to June 2018. The LDAS-Monde offline system is forced...

Introduction La pollution atmosphérique constitue un enjeu planétaire de santé publique. Ces dernières années nous avons constaté une forte augmentation des cas de crise d’asthme chez l’enfant au CHNEAR. L’objectif de notre étude d’évaluer le rôle de la pollution particulaire sur la survenue des cas de crises aux urgences du CHNEAR mais également d...

This paper deals with the climatology of aerosols in West Africa based on satellite and in situ measurements between 2001 and 2016 and covers four sites in the Sahelian zone. There are indeed Banizoumbou (13.541˚N, 02.665˚E), Cinzana (13.278˚N, 05.934˚W), Dakar (14.394˚N, 16.959˚W) and Ouagadougou (12.20˚N, 1.40˚W) located respectively in Niger, Ma...

Rainfall is a very important climatic phenomenon for the Sahelian economies. In Senegal, it has a very tremendous impact on agriculture and human life, which justifies the need for effective monitoring systems. In fact, the country has been experienced number of extreme events such as floods and public health problems. Despite the efforts made, it...

Dakar is an important place in Senegal, since it hosts most of the administration, social services, companies and business infrastructures. Located on the west coast of Africa, the rainy season affects the country in many ways. Considerable consequences on population life and infrastructures are denoted. The incapacity to prevent flood leads to the...

The objective of this work is to study the seasonal distribution of dust dry deposition in West Africa particularly in Senegal. This initiative is part of the efforts to improve the performance of photovoltaic panels (PV) in dusty environments such as Sahel region. It will help to evaluate the impact of dust dry deposition on these PV. Two climate...

Rainfall is a very important climatic phenomenon for the Sahelian economies. In Senegal, it has a very tremendous impact on agriculture and human life, which justifies the need for effective monitoring systems. In fact, the country has been experienced number of extreme events such as floods and public health problems. Despite the efforts made, it...

Due to the huge number of ancient cars and poor quality fuels, the standard air quality limit values of particulate matter (PM) is a big concern in Senegal. PM and number of gaseous pollutants that have an adverse affect on human health increase continuously. In contrast to remaining Senegalese regions, Dakar region hosts main socio-economic and a...

Chaque année, le désert du Sahara émet une quantité allant de 400 à 700 x 10 3 kg de poussières qui atteignent l'Europe, le sud des États-Unis et l'Afrique de l'Ouest. Des travaux antérieurs dans les Caraïbes et en Afrique de l'Ouest ont montré que les échantillons d'air prélevés lors d'épisodes de poussière contenaient des organismes vivants (bact...

Abstract: This paper presents an innovation in the maintenance of solar street lights in Senegal. On the one hand, there are currently 71000 solar street lights in Senegal and this number will continually increase thanks to the financing of the West African Economic and Monetary Union (also known by its French acronym, UEMOA). On the other hand, S...

The article investigates the impact of aerosol composition on the estimation of the downwelling surface shortwave flux (DSSF). This initiative forms part of the efforts to improve the DSSF distributed by the Land Surface Analysis Satellite Application Facility (LSA-SAF). This operational product assumes invariant aerosol properties under clear sky...

The Sahara desert transports large quantities of dust over the Sahelian region during the Northern Hemisphere winter and spring seasons (December-April). In episodic events, high dust concentrations are found at the surface, negatively impacting respiratory health. Bacterial meningitis in particular is known to affect populations that live in the S...

Caractérisation des émissions et transport de poussières en Afrique de l'Ouest

We present results for the vertical distribution of tropospheric ozone from 40 measurements at Dakar, Senegal (14.59°N, 17.5°W) from June to September of 2008, 2010, 2011 and 2012. Under pre-monsoon conditions (June), many dry air intrusions are found in the lower troposphere transitioning to humid conditions during July, August and September. Meas...

This paper presents a study using in situ measurements (AERONET data) to characterize the intra-seasonal variability of aerosols and their shortwave radiative impacts on Sahel (11˚N - 18˚N and 20˚W - 15˚E) climate using a long time series (2000 to 2010) from AERONET data. We first used the MISR aerosol optical depth (AOD) averaged between 2000 and...

This study aims to evaluate the available solar potential (direct normal on the overall horizontal plane) and to estimate the observed impact of aerosols on solar radiation at Mbour, Senegal (16.958 � W; 14. 394� N) using observations from solar instruments and AERONET during 2006. The results show the presence of a good available solar potential....

Cette étude a pour but l'évaluation du potentiel d'énergie solaire disponible (direct et diffus) et d'estimer l'impact des aérosols sur le rayonnement solaire à Mbour, Sénégal (16. 958 °W, 14. 394 °N) avec des observations d'instruments solaires et du réseau AERONET durant l'année 2006. Les résultats montrent la présence d'un bon potentiel d'energi...

Ozone soundings are launched during two Intensive Observing Periods (IOPs) from Dakar, Senegal; Sao Vicente, Cape Verde; and St James, Barbados to investigate ozone variability across the North Tropical Atlantic during June/July and August/September 2010. Two objectives of the campaign are to compare background tropospheric ozone mixing ratios and...

Cette étude vise à utiliser le code de transfert radiatif Streamer pour l’évaluation de l’impact des aérosols sur le cycle diurne du rayonnement solaire, afin d’estimer le potentiel d’énergie solaire pour un meilleur dimensionnement desmodules solaires à Mbour (16,95°W-14,40°E) au Sénégal. Avec le manque de données observées qui caractérise cette p...

On 3 July 2010 a large dust event was initiated over the Saharan Desert in Southern Algeria with the westward movement of an intensifying thermal low. Increases in Aerosol Optical Depth (AOD) in Algeria, Niger, Senegal and Cape Verde show the progression of the dust event with an AOD of 3.5 to 4 found in Senegal on 7 July. The surface total and dir...