Ossénatou Mamadou

Ossénatou Mamadou
Institute of Mathematics and Physics · Department of Physics

Phd

About

34
Publications
6,479
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255
Citations
Introduction
Dr. Ossénatou Mamadou is a Lecturer at the Institute of Mathematics and Physics, The University of Abomey-Calavi, Bénin. Her expertise covers Atmospheric Physics; Radiation in the atmosphere; Micrometeorology; Boundary Layer Processes and Eddy Covariance data treatment. Her current research focuses on the underlying physical processes in the Atmospheric Boundary-Layer and their relationship with the climate, to propose better parameterization tools for them.
Additional affiliations
January 2016 - present
Institute of Mathematics and Physics
Position
  • Professor (Assistant)
September 2014 - December 2015
University of Liège
Position
  • PostDoc Position
Description
  • I worked as a post – doc at the University of Liège - Gembloux Agro-Bio Tech. I investigated the impact of the reference cospectrum choice in the high frequency loss correction on the annual carbon balance at the Dorinne Terrestrial Observatory.
October 2010 - May 2014
University Joseph Fourier - Grenoble 1
Position
  • PhD Student

Publications

Publications (34)
Article
Grasslands are an important component of the global carbon balance, but their carbon storage potential is still highly uncertain. In particular, the impact of weather variability and management practices on grassland carbon budgets need to be assessed. This study investigated the carbon balance of an intensively managed permanent grassland and its...
Article
Full-text available
Natural ecosystems in sub–Saharan Africa are experiencing intense changes that will probably modify land surface feedbacks and consequently the regional climate. In this study, we have analyzed water vapor (QLE) and sensible heat (QH) fluxes over a woodland (Bellefoungou, BE) and a cultivated area (Nalohou, NA) in the Sudanian climate of Northern B...
Article
Full-text available
Energy exchange between land and atmosphere are important in climatic processes. In this paper, the seasonal dynamics and diurnal variations of surface radiation components of agricultural crops are investigated. One year data are used to emphasize the separate contribution of each radiation balance component. From the energy budget equation and FA...
Article
Full-text available
Latent and sensible heat surface fluxes are key factors of the western African monsoon dynamics. However, few long-term observations of these land surface fluxes are available; these are needed to increase understanding of the underlying processes and assess their impacts on the energy and water cycles at the surface–atmosphere interface. This stud...
Conference Paper
Full-text available
West Africa is undergoing a drastic transition in climate, demography and land use. This has a strong impact on the development capacities of every country in the region. While regional trends in each of these three key areas are relatively well known, decision makers scientists are often lacking a proper vision of how climate and land use are evol...
Article
Full-text available
This study evaluates the predictive performance of the North American Multi‐model Ensemble (NMME) over Central Africa (CA) using the historical rainfall data. The African Rainfall Climatology Version 2 (ARC2) is used as a substitute for reference observational data to examine the capability of 11 NMME and their NMME ensemble mean (MME) in simulatin...
Article
Full-text available
This study examines the seasonal forecast of the North American Multi-Model Ensemble (NMME) over Central Africa (CA), which encompasses a region of the world where the economies of the countries are highly dependent on agriculture and livestock breeding. Following many regional climate perspectives, we evaluated the seasonal forecast over the 4 sea...
Preprint
Meeting Name:AGU 2021 Fall Meeting Meeting Date:13-17 December 2021Meeting Location:New Orleans, LA and virtual
Article
This study aims at investigating whether the Integral Turbulence Characteristics (ITC) obey the Monin-Obukhov Similarity Theory (MOST) above a forest site in a Sudanian climate, and at identifying the appropriate ITC models for this ecosystem. Data were collected from a 18 m tower equipped with an Eddy Covariance system, above the clear forest clos...
Article
Full-text available
The community land model version 4.5 provides two ways for treating the vegetation cover changes (a static versus an interactive) and two runoff schemes for tracking the soil moisture changes. In this study, we examined the sensitivity of the simulated boreal summer potential evapotranspiration (PET) to the aforementioned options using a regional c...
Preprint
Full-text available
This study examines the seasonal forecast of the North American Multi-Model Ensemble (NMME) over Central Africa (CA), which encompasses a region of the world where the economies of the countries are heavily dependent on agriculture and livestock. The forecast evaluation is done over the 4 seasons: December to February (DJF), March to May (MAM), Jun...
Article
Full-text available
Solar energy is clean and renewable energy obtained from solar radiation. However, the quantity of the Incoming Shortwave Radiation (ISR) reaching the ground depends on meteorological conditions (e.g. clouds covers) which make it intermittent, randomness and nonlinear. These complex properties lead to strong fluctuation of the available solar radia...
Article
Full-text available
West Africa is a region in fast transition from climate, demography, and land use perspectives. In this context, the African Monsoon Multidisciplinary Analysis (AMMA)–Couplage de l’Atmosphère Tropicale et du Cycle eco-Hydrologique (CATCH) long-term regional observatory was developed to monitor the impacts of global change on the critical zone of We...
Article
Full-text available
West Africa is a region in fast transition from climate, demography, and land use perspectives. In this context, the African Monsoon Multidisciplinary Analysis (AMMA)-Couplage de l'Atmosphere Tropicale et du Cycle eco-Hydrologique (CATCH) long-term regional observatory was developed to monitor the impacts of global change on the critical zone of We...
Article
Full-text available
Grassland carbon budgets are known to be greatly dependent on management. In particular, grazing is known to directly affect CO 2 exchange through consumption by plants, cattle respiration, natural fertilisation through excreta, and soil compaction. This study investigates the impact of two grazing methods on the net ecosystem exchange (NEE) dynami...
Article
Full-text available
Complying with several assumption and simplifications, most of the carbon budget studies based on eddy covariance (EC) measurements quantify the net ecosystem exchange (NEE) by summing the flux obtained by EC (FC) and the storage flux (SC). SC is the rate of change of a scalar, CO2 molar fraction in this case, within the control volume underneath t...
Article
Full-text available
Comparing streamflow simulations against observations has become a straightforward way to evaluate a land surface model’s (LSM) ability in simulating water budget within a catchment. Using a meso-scale river routing scheme (RRS), this study evaluates simulated water budgets over the upper Ouémé River basin derived from 14 LSMs within the framework...
Conference Paper
Full-text available
Although widely used to measure CO 2 and other gas fluxes, the eddy covariance technique still needs methodolog-ical improvements. This research focuses on the high frequency loss corrections, which are especially important when using a closed-path infrared gas analyzer. We compared three approaches to implement these corrections for CO 2 fluxes an...
Thesis
Assessing the impact of climate and anthropic changes on the water and energy cycles, mainly rely on the quantification of the transfer between the various land covers and the atmosphere. Nevertheless the land - atmosphere interactions in the West African monsoon dynamic is not yet well understood because of the lack of observations in this region....
Article
Full-text available
Latent and sensible heat surface fluxes are key factors of the western African monsoon dynamics. However, few long-term observations of these land surface fluxes are available; these are needed to increase understanding of the underlying processes and assess their impacts on the energy and water cycles at the surface–atmosphere interface. This stud...
Conference Paper
Full-text available
Résumé: En Afrique de l'Ouest, les échanges d'énergie entre la surface et l'atmosphère jouent un rôle crucial dans la boucle de rétroaction entre humidité du sol et précipitations. Toutefois, ces échanges sont encore mal documentés dans cette région. L'objectif de cette étude est d'analyser la saisonnalité des flux d'énergie d'une zone cultivée sit...
Conference Paper
Full-text available
Introduction A consistent procedure for quality control of fluxes measured by eddy covariance method is essential for measurement networks and long-term measurements sites (Foken et al., 2004). Herein, data obtained from eddy covariance stations installed in the AMMA-CATCH (www.amma-catch.org) framework are presented. Weather characteristics Experi...

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Projects

Projects (2)
Project
To Assess the Surface Ecosystems Exchanges in West Africa
Project
Study the impact of grazing management practices and climate variability on the carbon balance of a pasture using Eddy covariance fluxes and biomass measurements data.