A5053663113- Hydrology and Watershed Management Studies
- Hydrology and Drought Analysis
- Flood Risk Assessment and Management
- Climate variability and models
- Meteorological Phenomena and Simulations
- Precipitation Measurement and Analysis
- Climate change impacts on agriculture
- Soil Moisture and Remote Sensing
- Soil erosion and sediment transport
- Agriculture and Rural Development Research
- Plant Water Relations and Carbon Dynamics
- Hydrological Forecasting Using AI
- Karst Systems and Hydrogeology
- Water management and technologies
- Cryospheric studies and observations
- Transboundary Water Resource Management
- Tree-ring climate responses
- Remote Sensing in Agriculture
- Computational Physics and Python Applications
- Groundwater and Isotope Geochemistry
- Agricultural risk and resilience
- Hydrology and Sediment Transport Processes
- Water resources management and optimization
- French Urban and Social Studies
- Plant Ecology and Soil Science
Institut de Recherche pour le Développement
2016-2025
Université de Montpellier
2016-2025
Laboratoire HydroSciences Montpellier
2015-2024
Centre National de la Recherche Scientifique
2013-2024
Acteurs, Ressources et Territoires dans le Développement
2021-2024
UMR Espace-Dev
2021-2024
IMT Mines Alès
2023
Milieux environnementaux, transferts et interactions dans les hydrosystèmes et les sols
2023
Cadi Ayyad University
2020
Institut National de la Recherche Scientifique
2008-2010
Abstract North Africa is considered a climate change hot spot. Existing studies either focus on the physical aspects of or discuss social ones. The present article aims to address this divide by assessing and comparing vulnerability Algeria, Egypt, Libya, Morocco, Tunisia linking it its implications. assessment focuses exposure, water resources, sensitivity, adaptive capacity. results suggest that all countries are exposed strong temperature increases high drought risk under change. Algeria...
Abstract Approximately 10 years ago, convection‐permitting regional climate models (CPRCMs) emerged as a promising computationally affordable tool to produce fine resolution (1–4 km) decadal‐long simulations with explicitly resolved deep convection. This explicit representation is expected reduce projection uncertainty related convection parameterizations found in most models. A recent surge CPRCM decadal over larger domains, sometimes covering continents, has led important insights into...
Abstract. Maghreb countries are highly vulnerable to extreme hydrological events, such as floods and droughts, driven by the strong variability of precipitation. While several studies have analyzed presence trends in precipitation records for Euro-Mediterranean basin, this study provides a regional assessment on its southernmost shores. A database 22 stations located Algeria, Morocco Tunisia with between 33 59 yr daily is considered. The change points eleven climate indices, describing...
Abstract. In the framework of international CORDEX program, new regional climate model (RCM) simulations at high spatial resolutions are becoming available for Mediterranean region (Med-CORDEX initiative). This study provides first evaluation hydrological impact studies one these high-resolution in a 1800 km2 catchment located North Morocco. Different approaches compared to analyze change impacts on hydrology this using RCM (ALADIN-Climate) from Med-CORDEX initiative two different (50 and 12...
Abstract Heavy rainfall events often occur in southern French Mediterranean regions during the autumn, leading to catastrophic flood events. A non-stationary peaks-over-threshold (POT) model with climatic covariates for these heavy is developed herein. regional sample of exceeding threshold 100 mm/d built using daily precipitation data recorded at 44 stations over period 1958–2008. The POT combines a Poisson distribution occurrence and generalized Pareto magnitude selected are seasonal...
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 We analysed long‐term variability and trends in meteorological droughts across Western Europe using the Standardized Precipitation Index (SPI). data from 199 stations spanning period 1851–2018 were employed, following homogenisation, to derive SPI‐3 SPI‐12 series for each station, together with indices on drought duration severity. Results reveal a general absence of statistically significant study domain, exception at some stations, generally covering short periods. The largest...
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...
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...
Intermittent rivers are prevalent in many countries across Europe, but little is known about the temporal evolution of intermittence and its relationship with climate variability. Trend analysis annual seasonal number zero-flow days, maximum duration dry spells mean date events performed on a database 452 varying degrees between 1970 2010. The relationships flow investigated using standardized precipitation evapotranspiration index (SPEI) indices describing large-scale atmospheric...
Abstract We present a long-term assessment of precipitation trends in Southwestern Europe (1850–2018) using data from multiple sources, including observations, gridded datasets and global climate model experiments. Contrary to previous investigations based on shorter records, we demonstrate, new long-term, quality controlled series, the lack statistically significant decreasing for region. Rather, were mostly found periods, highlighting prevalence interdecadal interannual variability at...
Abstract Floods represent a major natural hazard in Africa, causing over 27 000 fatalities during the period 1950–2019. Despite its relevance, little is known about changes flood across this continent due to lack of long-term high-quality streamflow records. Here we use newly assembled discharge dataset African rivers, and provide comprehensive view continent. We show that annual maximum peak does not exhibit monotonic pattern, but overall decreasing trends prior 1980 increasing afterwards,...
Abstract Africa is severely affected by floods, with an increasing vulnerability to these events in the most recent decades. Our improved preparation against and response this hazard would benefit from enhanced understanding of physical processes at play. Here, a database 399 African stream gauges used analyze seasonality observed annual maximum flood, precipitation soil moisture between 1981 2018. The includes total 11,302 flood events, covering regions. analysis based on directional...
This study is focused on 6 catchments in Tunisia, North Africa, under a semi-arid climate where daily river discharge and precipitation observations are available between 1992 2006. The distributed hydrological model LISFLOOD has been compared with lumped model, GR4J, to reproduce runoff floods, using observed rainfall interpolated from rain gauges the ERA5 reanalysis. GR4J their default parameters have little skill but when calibrated, both models provide similar performance discharge, mean...
Data-scarce basins located in West Africa and northern Central Africa. Multiple studies have shown that global gridded precipitation datasets could provide an alternative to the lack of observed data Sub-Saharan This work evaluated 15 based on satellite rainfall (ARC v.2, CHIRP CHIRPS PERSIANN-CDR, MSWEP v2.2 TAMSAT v3), reanalysis (ERA5, JRA-55 Adj, MERRA-2 PRECTOT, PRECTOTCORR, WFDEI-CRU WFDEI-GPCC) ground measurements (CPC v.1, CRU TS v.4.00 GPCC v.7), as well a regional estimation...
Floods are a recurring and devastating hazard in West Africa, with significant socio-economic environmental impacts. A better understanding of their frequency magnitude is crucial for effective flood risk mitigation, infrastructure design, water resource management. The lack reliable hydrometric datasets has hitherto been major limitation analysis at the scale Africa. We combine insights from historical future climate-driven projections to provide more complete description hazards Using...
Abstract. In northern Morocco are located most of the dams and reservoirs country, while this region is affected by severe rainfall events causing floods. To improve management water regulation structures, there a need to develop rainfall–runoff models both maximize storage capacity reduce risks caused study, model developed reproduce flood for 655 km2 catchment upstream 6th largest dam in Morocco. Constrained data availability, standard event-based combining SCS-CN (Soil Conservation...