A5031896336- Precipitation Measurement and Analysis
- Meteorological Phenomena and Simulations
- Hydrology and Watershed Management Studies
- Flood Risk Assessment and Management
- Soil Moisture and Remote Sensing
- Soil erosion and sediment transport
- Karst Systems and Hydrogeology
- Hydrology and Drought Analysis
- Climate variability and models
- Atmospheric aerosols and clouds
- Landslides and related hazards
- Radio Wave Propagation Studies
- Cryospheric studies and observations
- Geophysics and Gravity Measurements
- Tropical and Extratropical Cyclones Research
- Tree Root and Stability Studies
- Groundwater and Watershed Analysis
- Icing and De-icing Technologies
- Hydrological Forecasting Using AI
- Ocean Waves and Remote Sensing
- Millimeter-Wave Propagation and Modeling
- Underwater Vehicles and Communication Systems
- Aeolian processes and effects
- Land Use and Ecosystem Services
- Atmospheric chemistry and aerosols
Géosciences Environnement Toulouse
2015-2025
Institut de Recherche pour le Développement
2016-2025
Centre National de la Recherche Scientifique
2012-2025
Université de Toulouse
2011-2025
Université Toulouse III - Paul Sabatier
1992-2024
Observatoire Midi-Pyrénées
2012-2024
ORCID
2024
Centre National d'Études Spatiales
2023
Fundação Cearense de Meteorologia e Recursos Hídricos
2023
Université Grenoble Alpes
2007-2011
Abstract Lakes are among the most prevalent and predominant water repositories on Earth's land surface. A primary objective of Surface Water Ocean Topography (SWOT) satellite mission is to monitor surface elevation, area, storage change in lakes globally. To meet this objective, prior information lakes, such as locations benchmark extents, required organize SWOT's KaRIn observations for computing lake variation over time. Here, we present SWOT Prior Lake Database (PLD) fulfill requirement....
Abstract We review the recent progress in dynamical and statistical downscaling approaches for west African precipitation perform a regional climate model (RCM) intercomparison using novel multi‐model RCM data set from Ensembles‐based Predictions of Climate Changes Their Impacts (ENSEMBLES) Monsoon Multidisciplinary Analyses (AMMA) projects. Present RCMs have distinct systematic errors terms varying amplitude pattern across models. This is also reflected relatively large spread projected...
Abstract The evaluation of rainfall products over the West African region will be an important component Megha‐Tropiques (MT) Ground Validation (GV) plan. In this paper, two dense research gauge networks from Benin and Niger, integrated in MT GV plan, are presented used to evaluate several currently available global or regional satellite‐based products. Eight products—the Precipitation Estimation Remotely Sensed Information using Artificial Neural Networks (PERSIANN), Climate Prediction...
Abstract Monsoon rainfall is central to the climate of West Africa, and understanding its variability a challenge for which satellite products could be well suited contribute to. Their quality in this region has received less attention than elsewhere. The focus set on scales associated with atmospheric variability, meteorological benchmark up ground-based observations from African Multidisciplinary Analysis (AMMA) program. investigation performed at various accumulation using four gauge...
Abstract. Rainfall-induced landslides are a common and significant source of damages fatalities worldwide. Still, we have little understanding the quantity properties landsliding that can be expected for given storm landscape, mostly because few inventories rainfall-induced caused by single storms. Here present six new comprehensive landslide event coincident with well identified rainfall events. Combining these datasets, two previously published study their statistical relations to...
Abstract Rainfall monitoring based on commercial terrestrial microwave links is tested for the first time in Burkina Faso, Sahelian West Africa. In collaboration with one national cellular phone operator, Telecel attenuation a 29 km long link operating at 7 GHz was monitored 1 s rate monsoon season 2012. The series of transformed into rain rates and compared gauge data. method successful quantifying rainfall: 95% rainy days are detected. correlation daily 0.8, bias 6%. 5 min step within each...
In the West African Sahel, two paradoxical hydrological behaviors have occurred during last five decades. The first paradox was observed 1968–1990s ‘Great Drought’ period, which runoff significantly increased. second appeared subsequent period of rainfall recovery (i.e., since 1990s), coefficient continued to increase despite general re-greening Sahel. This paper reviews and synthesizes literature on drivers these behaviors, focusing recent works in Sahelo/Sudanian strip, upscaling processes...
Core Ideas AMMA‐CATCH is a long‐term critical zone observatory in West Africa. Four sites sample the sharp ecoclimatic gradient characteristic of this region. Combined measurements meteorology, water, and vegetation dynamics began 1990. Intensification rainfall hydrological cycles observed. The strong overall re‐greening may hide contrasted changes. Africa region fast transition from climate, demography, land use perspectives. In context, African Monsoon Multidisciplinary Analysis...
Abstract This article reviews the state of art in use space-borne observations for analyzing extreme rainfall and flood events Africa. Floods occur across many space timescales, from very localized flash to slow propagation discharge peaks large rivers. We discuss here how satellite data can help us understand genesis impacts these events, monitor their evolution, better constrain prediction models, thereby improving early warning population protection. To illustrate topics, we reanalyze...
Abstract Storm‐induced landslides are a common hazard, but the link between their spatial pattern and rainfall properties is poorly understood, mostly because hillslope stability modulated by under‐constrained, spatially variable topographic, hydrological, mechanical properties. Here, we use long‐term data set from Japanese radar network to discuss why landslide caused major typhoon correlates with event agrees normalized 10‐year return period amount, that is, anomaly. This may be explained...
CORRESPONDING AUTHOR: Marielle Gosset, GET, 14 av Edouard Belin, 31400 Toulouse, France, E-mail: marielle.gosset@ird.fr
Abstract Rainfall-induced landsliding is a global and systemic hazard that likely to increase with the projections of increased frequency extreme precipitation current climate change. However, our ability understand mitigate landslide risk strongly limited by availability relevant rainfall measurements in many prone areas. In last decade, satellite multisensor products (SMPP) have been proposed as solution, but very few studies assessed their adequately characterize events triggering...
Congo River Basin Precipitation is the major driving force of hydrological processes and one main input datasets for models. The least studied river basins in world suffers from scarcity difficulty accessing rain gauge data, necessitating use satellite precipitation estimates studies. In this study, we have made a comprehensive comparison different satellite-based products' inputs model Basin. Our findings showed that products based on satellite-only source tend to overestimate rainy season...
Abstract The major advances achieved during African monsoon multidisciplinary analysis in our physical understanding of the West (WAM) system are reviewed. Recent research provides an advanced key WAM features. Saharan heat low, interactions flow with surface and reversed on top it, all play a more important role than previously assumed, interact according to phase diurnal cycle convection. studies also emphasise significance upstream conditions Central East Africa, as well strong between...
Abstract Characterising the error associated with satellite rainfall estimates based on space‐borne passive and active microwave measurements is a major issue for many applications, such as water budget studies or assessment of natural hazards caused by extreme events. We focus here structure Bayesian Rain retrieval Algorithm Including Neural Network (BRAIN), algorithm that provides instantaneous quantitative precipitation at surface MADRAS radiometer board Megha‐Tropiques satellite. A...
A series of multi‐platform rainfall estimates is evaluated at the daily 1° resolution over three dense rain‐gauge networks in West Africa, Niger, Burkina Faso and Benin, for period 2012–2016. The quality ground reference, its dependence on number gauges consequences validation are discussed. primary objective this work evaluation newly released Tropical Analysis Precipitation with an Estimation Errors (TAPEER) one‐degree accumulation from Megha‐Tropiques mission. Several other products,...