A5071858135- Atmospheric chemistry and aerosols
- Climate variability and models
- Air Quality and Health Impacts
- Atmospheric aerosols and clouds
- Vehicle emissions and performance
- Meteorological Phenomena and Simulations
- Atmospheric and Environmental Gas Dynamics
- Climate change impacts on agriculture
- Air Quality Monitoring and Forecasting
- Precipitation Measurement and Analysis
- Fire effects on ecosystems
- Energy and Environment Impacts
- Hydrology and Drought Analysis
- Aeolian processes and effects
- Cocoa and Sweet Potato Agronomy
- Plant Water Relations and Carbon Dynamics
- Plant responses to elevated CO2
- Climate Change and Health Impacts
- COVID-19 impact on air quality
- African Botany and Ecology Studies
- Tree-ring climate responses
- Impact of Light on Environment and Health
- Climate Change and Sustainable Development
- Fire dynamics and safety research
- Child Nutrition and Water Access
Université Félix Houphouët-Boigny
2015-2025
European Automobile Manufacturers Association
2022
Federal University of Technology
2017
Laboratoire de Physico-Chimie de l'Atmosphère
2012
Centre Hospitalier Universitaire de Cocody
2012
In this study, we investigate changes in temperature and precipitation extremes over West Central Africa (hereafter, WAF domain) as a function of global mean with focus on the implications warming 1.5 °C 2 according Paris Agreement. We applied scaling approach to capture climate increase several subregions within domain: Western Sahel, Eastern Guinea Coast including Congo Basin.
Abstract. A number of campaigns have been carried out to establish the emission factors pollutants from fuel combustion in West Africa, as part work package 2 (“Air Pollution and Health”) DACCIWA (Dynamics-Aerosol-Chemistry-Cloud Interactions Africa) FP7 program. Emission sources considered here include wood (hevea iroko) charcoal burning, making, open trash vehicle emissions, including trucks, cars, buses two-wheeled vehicles. total particulate matter (TPM), elemental carbon (EC), primary...
ABSTRACT Dust generation and transportation from North Africa are thought to modulate the West African Monsoon ( WAM ) features. In this study, we investigated relationship between Saharan Air Layer located above Atlantic Ocean OSAL features, including flow, Easterly Jet AEJ Tropical TEJ over using RegCM4 regional model at 30 km grid resolution. Two sets of experiments with without dust load were performed 2007 2013 simulation domain, encompassing whole a large part adjacent Ocean. An...
Abstract This study aims to understand and document the occurrence variability of cloud cover types in West Africa (WA). Investigations are carried out with a 10‐year hourly record two data products: CERES passive satellite observations ERA5 reanalysis. The seasonal evolutions high (HCC), middle (MCC), low (LCC) total (TCC) examined. Both products agree on spatial cover, although presents lower values fraction than which is partly attributed inability sensor detect optically thin clouds...
Abstract Over the past decades, large variations of precipitation were observed in Africa, which often led to dramatic consequences for local society and economy. To avoid such disasters future, it is crucial better anticipate expected changes, especially current context climate change population growth. this date, however, projections over Africa are still associated with very uncertainties. understand how uncertainty can be reduced, study uses an advanced Bayesian analysis variance (ANOVA)...
Abstract. There are very few African regional inventories providing biofuel and fossil fuel emissions. Within the framework of DACCIWA project, we have developed an anthropogenic emission inventory including main polluting sources (wood charcoal burning, making, trucks, cars, buses two-wheeled vehicles, open waste flaring). To this end, a database on consumption factors specific to Africa was established using most recent measurements. New spatial proxies (road network, power plant...
Abstract. To tackle the current pressing atmospheric science issues, as well those in future, a robust scientific community is necessary all regions across globe. Unfortunately, this does not yet exist. There are many geographical areas that still underrepresented community, of which Global South. also larger gaps understanding composition, processes, and impacts these regions. In opinion, we focus on two South to discuss some common challenges constraints, with our strengths research. It...
Biomass burning (BB) results from complex interactions between ecosystems, humans, and climate, releasing large amounts of gases particles. Accurate BB emission estimates are essential for air quality, climate studies, impact assessments. Various existing bottom-up inventories show significant discrepancies, varying by factors 2 to 4 due uncertainties in burned area (BA), (EF), vegetation parameters such as biomass density (BD) efficiency (BE). Here, we investigate the role these...
Biomass burning (BB) results from complex interactions between ecosystems, humans, and climate, releasing large amounts of gases particles. Accurate BB emission estimates are essential for air quality, climate studies, impact assessments. Various existing bottom-up inventories show significant discrepancies, varying by factors 2 to 4 due uncertainties in burned areas (BAs), (EFs), vegetation parameters such as biomass density (BD) efficiency (BE). Here, we investigate the role these...
Abstract. Air quality degradation is a major issue in the large conurbations on shore of Gulf Guinea. We present for first time PM2.5 series collected Cotonou, Benin, and Abidjan, Côte d'Ivoire, from February 2015 to March 2017. Measurements were performed vicinity combustion aerosol sources: Cotonou/traffic (CT), Abidjan/traffic (AT), Abidjan/landfill (AL) Abidjan/domestic fires (ADF). report weekly mass carbonaceous content as elemental (EC) organic (OC) carbon concentrations. also measure...
Background As extreme events such as drought and flood are projected to increase in frequency intensity under climate change, there is still large missing evidence on how exposure potentially impacts mortality among young children. This study aimed investigate the association between risk of infant Africa, a region highly vulnerable change that bears heaviest share global burden. Methods findings In this cross-sectional study, we obtained data 34 African countries during 1992–2019 from...
Abstract. The main objective of this work is to investigate at regional scale the variability in burned areas over savannahs West Africa and their links with rainfall large-scale climatic indexes such as Southern Oscillation Index (SOI), Multivariate ENSO (MEI), North Atlantic (NAO) sea surface temperature gradient (SSTG). Daily satellite products (L3JRC) from SPOT Vegetation sensor a moderate spatial resolution 1 km x between 2000 2007 were analyzed African savannah paper. Results seasonal...
This study assessed the sensitivity of West African climate to varying vegetation fractions. The assessment a such relationship is critical in understanding interactions between land surface and atmosphere. Two sets convection-permitting simulations from UK Met Office Unified Model at 12 km horizontal resolution covering monsoon period May-September (MJJAS) were used, one with fixed fraction (MF-V) other time-varying (MV-V). Vegetation fractions are based on MODIS retrievals May September....
Traffic source emission inventories for the rapidly growing West African urban cities are necessary better characterization of local vehicle emissions released into atmosphere these cities. This study is based on field measurements in Yopougon (Abidjan, Côte d’Ivoire) 2016; a site representative anthropogenic activities The provided data type and age, traveling time, fuel type, estimated amount consumption. revealed high traffic flow personal cars highways, boulevards, backstreets, whereas...
Abstract. The latest version of RegCM4 with CLM4.5 as a land surface scheme was used to assess the performance and sensitivity simulated West African climate system different convection schemes. studies were performed over domain from November 2002 December 2004 at spatial resolution 50 km × involved five convective schemes: (i) Emanuel; (ii) Grell; (iii) Emanuel Grell ocean (Mix1); (iv) (Mix2); (v) Tiedtke. All simulations forced ERA-Interim data. Validation temperature 2 m precipitation...
This modeling study is conducted to examine the potential impact of reforestation (greenbelt) location (either in Sahel or Guinean region) on West African summer climate system. To this end, three simulations using regional model RegCM4 driven by ERA-Interim reanalysis were performed at 50 km horizontal resolution over a domain for period 2000–2011. The first experiment, namely control (CTRL), uses standard vegetation cover, while two others incorporate throughout integration, zonal band...
Road traffic emission inventories based on bottom-up methodology, are calculated for each road segment from fuel consumption and volume data obtained during field measurements in Yopougon. High emissions of black carbon (BC) vehicles observed at major intersections, areas surrounding industrial zones highways. Highest values monoxide (CO) (14.8 t/d) nitrogen oxides (NOx) (7.9 t/d), usually considered as the pollution tracers. Furthermore, peak CO due to personal cars (PCs) mainly linked old...
Biomass burning has become more frequent and widespread worldwide, with a significant proportion occurring in tropical Africa. Fire dynamics have been generally studied at global or regional scales. At local scale, however, fire impacts can be severe catastrophic, suggesting analyses are warranted. This study aimed to characterise the spatio-temporal variations of vegetation fires identify main hotspots Côte d’Ivoire, country West Africa, one world’s burn centres. Using MODIS-derived data...
There is a notable lack of continuous monitoring air pollutants in the Global South, especially for measuring chemical composition, due to high cost regulatory monitors. Using our previously developed low-cost method quantify black carbon (BC) fine particulate matter (PM2.5) by analyzing reflected red light from ambient particle deposits on glass fiber filters, we estimated hourly BC concentrations with filter tapes beta attenuation monitors (BAMs). measurements obtained through this were...
The Sahara and Sahel regions of Africa are important sources dust particles into the atmosphere. Dust from these transported over Atlantic Ocean to Eastern American Coasts. This transportation shows temporal spatial variability often reaches its peak during boreal summer (June-July-August). regional climate model (RegCM 4.0), containing a module emission, transport, deposition processes, is used in this study. Saharan Sahelian dusts emissions, transports, climatic impact on precipitations...
Abstract. There are very few African regional inventories providing biofuel and fossil fuel emissions. Within the framework of DACCIWA project, we have developed an anthropogenic emission inventory including main polluting sources (wood charcoal burning, making, truck, car, buses two wheels vehicles, open waste burning flaring). To this end, a database on consumption factors specific to Africa was established, using most recent measurements. New spatial proxies (road network, power plant...
There is a notable lack of continuous monitoring air pollutants in the Global South, especially for measuring chemical composition, due to high cost regulatory monitors. Using our previously developed low-cost method quantify black carbon (BC) fine particulate matter (PM2.5) by analyzing reflected red light from ambient particle deposits on glass fiber filters, we estimated hourly BC concentrations with filter tapes Beta Attenuation Monitors (BAMs). measurements obtained through this were...
Indoor air pollution associated with cooking and heating biomass fuel burning is estimated to be responsible for 7 million deaths in 2016 most of these occur low middle income countries. In Cote d'Ivoire, 73% the population reported using (charcoal or wood) cooking. The active device 3M EVM-7 was used measure PM2.5 daily average concentrations inside outside households areas close (Andokoi) far (Lubafrique) an industrial zone two popular neighborhoods Yopougon, largest populated municipality...