A5057966139- Climate variability and models
- Hydrology and Watershed Management Studies
- Cryospheric studies and observations
- Plant Water Relations and Carbon Dynamics
- Meteorological Phenomena and Simulations
- Flood Risk Assessment and Management
- Climate change and permafrost
- Soil Moisture and Remote Sensing
- Geophysics and Gravity Measurements
- Precipitation Measurement and Analysis
- Soil and Unsaturated Flow
- Hydrology and Drought Analysis
- Water resources management and optimization
- Climate change impacts on agriculture
- Atmospheric and Environmental Gas Dynamics
- Soil erosion and sediment transport
- Landslides and related hazards
- Atmospheric chemistry and aerosols
- Tropical and Extratropical Cyclones Research
- Arctic and Antarctic ice dynamics
- Land Use and Ecosystem Services
- Remote Sensing in Agriculture
- Wind and Air Flow Studies
- Irrigation Practices and Water Management
- Soil Geostatistics and Mapping
Météo-France
2016-2025
Centre National de la Recherche Scientifique
2016-2025
Université de Toulouse
2011-2025
Centre National de Recherches Météorologiques
2016-2025
DGA Techniques aérospatiales
2022
University of Edinburgh
2021
University of California, Los Angeles
2014
European Centre for Medium-Range Weather Forecasts
2008
Université Toulouse III - Paul Sabatier
2005
Institut de Recherche pour le Développement
2005
Abstract. SURFEX is a new externalized land and ocean surface platform that describes the fluxes evolution of four types surfaces: nature, town, inland water ocean. It mostly based on pre-existing, well-validated scientific models are continuously improved. The motivation for building to use strictly identical in high range applications order mutualise research development efforts. can be run offline mode (0-D or 2-D runs) coupled (from mesoscale numerical weather prediction climate models)....
Abstract. Detailed studies of snow cover processes require models that offer a fine description the properties. The detailed snowpack model Crocus is such scheme, and has been run operationally for avalanche forecasting over French mountains 20 yr. It also used climate or hydrological studies. To extend its potential applications, recently integrated within framework externalized surface module SURFEX. SURFEX computes exchanges energy mass between different types atmosphere. includes in...
Thirty‐three snowpack models of varying complexity and purpose were evaluated across a wide range hydrometeorological forest canopy conditions at five Northern Hemisphere locations, for up to two winter snow seasons. Modeled estimates water equivalent (SWE) or depth compared observations open sites each location. Precipitation phase duration above‐freezing air temperatures are shown be major influences on divergence convergence modeled the subcanopy snowpack. When considered collectively all...
The hydrometeorological model SIM consists of a meteorological analysis system (SAFRAN), land surface (ISBA), and hydrogeological (MODCOU). It generates atmospheric forcing at an hourly time step, it computes water energy budgets, the river flow more than 900 river‐gauging stations, level several aquifers. was extended over all France in order to have homogeneous nationwide monitoring resources: can therefore be used forecast flood risk monitor drought entire nation. applied 10‐year period...
Abstract The Protocol for the Analysis of Land Surface Models (PALS) Model Benchmarking Evaluation Project (PLUMBER) was designed to be a land surface model (LSM) benchmarking intercomparison. Unlike traditional methods LSM evaluation or comparison, uses fundamentally different approach in that it sets expectations performance range metrics priori—before simulations are performed. This can lead very conclusions about performance. For this study, both simple physically based models and...
Abstract. This paper describes ESM-SnowMIP, an international coordinated modelling effort to evaluate current snow schemes, including schemes that are included in Earth system models, a wide variety of settings against local and global observations. The project aims identify crucial processes characteristics need be improved models the context local- global-scale modelling. A further objective ESM-SnowMIP is better quantify snow-related feedbacks system. Although it not part sixth phase...
Abstract [1] The Surface Monitoring Of the Soil Reservoir Experiment (SMOSREX) site is used in this study to evaluate performance of Interaction between Biosphere Atmosphere soil multilayer diffusion scheme (ISBA-DF) reproducing short-term and long-term evolution moisture temperature profiles, surface energy fluxes, drainage rate using both Brooks Corey van Genuchten models describing soil-water retention conductivity curves. consists a fallow field southwestern France where intensive...
Abstract Twenty-seven models participated in the Earth System Model–Snow Model Intercomparison Project (ESM-SnowMIP), most data-rich MIP dedicated to snow modeling. Our findings do not support hypothesis advanced by previous MIPs: evaluating against more variables and providing evaluation datasets extended temporally spatially does facilitate identification of key new processes requiring improvement model mass energy budgets, even at point scales. In fact, same modeling issues identified...
Twenty-one land surface schemes (LSSs) performed simulations forced by 18 yr of observed meteorological data from a grassland catchment at Valdai, Russia, as part the Project for Intercomparison Land-Surface Parameterization Schemes (PILPS) Phase 2(d). In this paper authors examine simulation snow. comparison with observations, models are able to capture broad features snow regime on both an intra- and interannual basis. However, weaknesses in exist, early season ablation events significant...
In the Project for Intercomparison of Land-Surface Parameterization Schemes phase 2a experiment, meteorological data year 1987 from Cabauw, Netherlands, were used as inputs to 23 land-surface flux schemes designed use in climate and weather models. evaluated by comparing their outputs with long-term measurements surface sensible heat fluxes into atmosphere ground, upward longwave radiation total net radiative fluxes, also them latent derived a energy balance. Tuning observed was not...
Abstract Many snow models have been developed for various applications such as hydrology, global atmospheric circulation and avalanche forecasting. The degree of complexity these is highly variable, ranging from simple index methods to multi-layer that simulate snow-cover stratigraphy texture. In the framework Snow Model Intercomparison Project (SnowMIP), 23 were compared using observed meteorological parameters two mountainous alpine sites. analysis here focuses on validation energy-budget...
The Interactions between Soil, Biosphere, and Atmosphere land surface scheme is currently used coupled both to atmospheric models a distributed hydrological model. There are two snow-scheme options available for modeling: the baseline force–restore approach, which uses composite snow–soil–vegetation energy budget single snow layer; multilayer detailed internal-process Only method routinely in modeling applications. Recent studies have shown that simulations mountainous catchments within...
The Rhône-Aggregation (Rhône-AGG) Land Surface Scheme (LSS) intercomparison project is an initiative within the Global Energy and Water Cycle Experiment (GEWEX)/Global Land–Atmosphere System Study (GLASS) panel of World Climate Research Programme (WCRP). It a intermediate step leading up to next phase Soil Wetness Project (GSWP) (Phase 2), for which there will be broader investigation aggregation between global scales (GSWP-1) river scale. This makes use Rhône modeling system, was developed...
The inclusion of a third soil layer in the Interactions between Soil, Biosphere, and Atmosphere (ISBA) model is presented this paper. water content base root zone deep described using generalized form force–restore method. new coefficient calibrated detailed high-resolution transfer then related to textural properties simple regression relationships. It shown that use gives better results, general, than direct solution method when similar geometry with same number layers. In initial...
The interactions between the soil, biosphere, and atmosphere (ISBA) land surface parameterization scheme has been modified to include soil ice. liquid water equivalent volumetric ice content is modeled using two reservoirs within soil: a thin layer that directly affects energy balance, deep layer. freezing/drying, wetting/thawing analogy used, description of modifications ISBA force–restore scheme, in particular hydrological thermal transfer coefficients, presented. In addition,...
Abstract The Crocus snowpack model within the Interactions between Soil–Biosphere–Atmosphere (ISBA) land surface was run over northern Eurasia from 1979 to 1993, using forcing data extracted hydrometeorological datasets and meteorological reanalyses. Simulated snow depth, water equivalent, density open fields were compared with local observations 1000 monitoring sites, available either once a day or three times per month. best performance is obtained European Centre for Medium-Range Weather...
The Project for Intercomparison of Land-Surface Parameterization Schemes phase 2(d) experiment at Valdai, Russia, offers a unique opportunity to evaluate land surface schemes, especially snow and frozen soil parameterizations. Here, the ability 21 schemes that participated in correctly simulate thermal hydrological properties on several different timescales was examined. Using observed vertical profiles temperature moisture, impact models moisture simulations evaluated. It found when...
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....
Abstract. In this study we analyzed how an improved representation of snowpack processes and soil properties in the multilayer snow schemes Interaction Soil-Biosphere-Atmosphere (ISBA) land surface model impacts simulation temperature profiles over northern Eurasian regions. For purpose, refine ISBA's layering algorithm propose a parameterization albedo compaction/densification adapted from detailed Crocus model. We also include dependency on organic carbon content for hydraulic thermal...
Abstract Recent advances in global flow routing schemes have shown the importance of using high-resolution topography for representing floodplain inundation dynamics more reliably. This study presents and evaluates Hydrological Modeling Analysis Platform (HyMAP), which is a scheme specifically designed to bridge gap between current state-of-the-art by combining their main features introducing new better capture dynamics. The ultimate goals HyMAP are provide scientific community with novel...