A5019685499- Plant Water Relations and Carbon Dynamics
- Soil Moisture and Remote Sensing
- Hydrology and Watershed Management Studies
- Remote Sensing in Agriculture
- Irrigation Practices and Water Management
- Climate variability and models
- Precipitation Measurement and Analysis
- Soil erosion and sediment transport
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Hydrology and Drought Analysis
- Climate change impacts on agriculture
- Urban Heat Island Mitigation
- Cryospheric studies and observations
- Greenhouse Technology and Climate Control
- Karst Systems and Hydrogeology
- Soil and Unsaturated Flow
- Water resources management and optimization
- Meteorological Phenomena and Simulations
- Soil Geostatistics and Mapping
- Flood Risk Assessment and Management
- Climate change and permafrost
- Solar Radiation and Photovoltaics
- Remote Sensing and LiDAR Applications
- Agriculture and Rural Development Research
- Remote Sensing and Land Use
Centre d'Études Spatiales de la Biosphère
2016-2025
Institut de Recherche pour le Développement
2016-2025
Université de Toulouse
2014-2025
Université Toulouse III - Paul Sabatier
2014-2024
Centre National de la Recherche Scientifique
2014-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2020-2024
Laboratoire des Sciences du Climat et de l'Environnement
2023
Cadi Ayyad University
2013-2021
Sup de Co Marrakech
2015-2020
Centre National d'Études Spatiales
2002-2017
The leaf area index (LAI), defined as the one-sided green per unit ground area, is used in many numerical weather prediction (NWP) models an indicator of vegetation development state, which paramount importance to characterize land evaporation, photosynthesis, and carbon-uptake processes. LAI often simply represented by lookup tables, dependent on type seasons. However, global datasets derived from remote sensing observations have more recently become available. These products are based...
The rainfall over West Africa has been characterized by extreme variability in the last half-century, with prolonged droughts resulting humanitarian crises. There is, therefore, an urgent need to better understand and predict African monsoon (WAM), because social stability this region depends a large degree on water resources. economies are primarily agrarian, there issues related food security health. In particular, is land-atmosphere hydrological processes of their potential feedbacks WAM....
The land surface model (LSM) ISBA‐A‐gs (Interactions between Soil, Biosphere and Atmosphere, CO 2 ‐reactive) is specifically designed to simulate leaf stomatal conductance area index (LAI) in response climate, soil properties, atmospheric carbon dioxide concentration. run at the global scale, forced by GSWP‐2 meteorological data a resolution of 1° for period 1986–1995. We test comparing simulated LAI values against three satellite‐derived sets (ISLSCP Initiative II data, MODIS ECOCLIMAP...
Abstract Root-zone soil moisture constitutes an important variable for hydrological and weather forecast models. Microwave radiometers like the L-band instrument on board European Space Agency’s (ESA) future Soil Moisture Ocean Salinity (SMOS) mission are being designed to provide estimates of near-surface (0–5 cm). This quantity is physically related root-zone through diffusion processes, both surface layers commonly simulated by land models (LSMs). Observed time series may be used analyze...
Abstract. The seasonal snow in the Pyrenees is critical for hydropower production, crop irrigation and tourism France, Spain Andorra. Complementary to situ observations, satellite remote sensing useful monitor effect of climate on dynamics. MODIS daily products (Terra/MOD10A1 Aqua/MYD10A1) are widely used generate cover climatologies, yet it preferable assess their accuracies prior use. Here, we use both observations data evaluate Pyrenees. First, compare depth (SD) water equivalent (SWE)...
Abstract The European Centre for Medium‐Range Weather Forecasts land surface model has been extended to include a carbon dioxide module. This relates photosynthesis radiation, atmospheric (CO 2 ) concentration, soil moisture, and temperature. Furthermore, it the option of deriving canopy resistance from providing as stomatal control transpiration formulation. Ecosystem respiration is based on empirical relations dependent temperature, snow depth, use. CO designed numerical weather prediction...
This study aimed to quantify possible climate change impacts on runoff for the Rheraya catchment (225 km2) located in High Atlas Mountains of Morocco, south Marrakech city. Two monthly water balance models, including a snow module, were considered reproduce surface period 1989‒2009. Additionally, an ensemble five regional models from Med-CORDEX initiative was evaluate future changes precipitation and temperature, according two emissions scenarios RCP4.5 RCP8.5. The projections 2049‒2065...
In arid and semi-arid areas, rainfall is often characterized by a strong spatial temporal variability. These environmental factors, combined with the sparsity of measurement networks in developing countries, constitute real constraints for water resources management. recent years, several sources have become available, such as TRMM data (Tropical Rainfall Measurement Mission). this study, 3B42 Version 7 product was evaluated using rain gauges measurements from 19 stations Oum-Er-Bia (OER)...
Abstract The present work aims to quantify the impact of climate change (CC) on grain yields irrigated cereals and their water requirements in Tensift region Morocco. Med-CORDEX (MEDiterranean COordinated Regional Climate Downscaling EXperiment) ensemble runs under scenarios RCP4.5 (Representative Concentration Pathway) RCP8.5 are first evaluated disaggregated using quantile-quantile approach. CC duration main wheat phenological stages based degree-day approach is then analyzed. results show...
Abstract. Instantaneous evapotranspiration rates and surface water stress levels can be deduced from remotely sensed temperature data through the energy budget. Two families of methods defined: contextual methods, where are scaled on a given image between hot/dry cool/wet pixels for particular vegetation cover, single-pixel which evaluate latent heat as residual balance one pixel independently others. Four models, two (S-SEBI modified triangle method, named VIT) (TSEB, SEBS) applied over...
Monitoring of water resources and a better understanding the eco-hydrological processes governing their dynamics are necessary to anticipate develop measures adapt climate water-use changes. Focusing on this aim, research project carried out within framework French–Moroccan cooperation demonstrated how remote sensing can help improve monitoring modelling in semi-arid Mediterranean regions. The study area is Tensift Basin located near Marrakech (Morocco) – typical Southern catchment with...
The main objective of this work was to retrieve surface soil moisture (SSM) by using scattering models and a support vector machine (SVM) technique driven backscattering coefficients obtained from Sentinel-1 satellite images acquired over bare agricultural in the Tensfit basin Morocco. Two were selected study due their wide use inversion procedures: theoretical integral equation model (IEM) semi-empirical (Oh). To end, sensitivity SAR at V ( σ v ∘ ) H h polarizations situ data analyzed...
Abstract. Land surface models (LSMs) are pushing towards improved realism owing to an increasing number of observations at the local scale, constantly improving satellite data sets and associated methodologies best exploit such data, computing resources, in response user community. As a part trend LSM development, there have been ongoing efforts improve representation land processes interactions between soil–biosphere–atmosphere (ISBA) within EXternalized SURFace (SURFEX) model platform. The...
Accurate seasonal forecasting of cereal yields is an important decision support tool for countries, such as Morocco, that are not self-sufficient in order to predict, early possible, importation needs. This study aims develop model (soft wheat, barley and durum wheat) at the scale agricultural province considering 15 most productive over 2000–2017 (i.e., × 18 = 270 values). To this objective, we built on previous works showed a tight linkage between various datasets including weather data...
A new version of the land surface model European Centre for Medium‐Range Weather Forecasts (Carbon‐TESSEL, or CTESSEL) includes a vegetation growth model. This study describes leaf area index (LAI) data assimilation system (LDAS) based on CTESSEL and satellite LAI operational Net Ecosystem Exchange (NEE) predictions. The LDAS is evaluated over West Africa. preliminary experiment shows significant impact NEE. compared to two products: predicted annual cycle delayed Sahel savannah, values...