Maxime Jay‐Allemand
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View article: smash v1.0: a differentiable and regionalizable high-resolution hydrological modeling and data assimilation framework
smash v1.0: a differentiable and regionalizable high-resolution hydrological modeling and data assimilation framework Open
The smash software is a differentiable and regionalizable framework enabling modular high-resolution hydrological modeling and data assimilation, from catchment to regional and country scales, for water research and operational application…
View article: Spatially distributed gradient-based calibration and parametric sensitivity of a spatialized hydrological model over 235 French catchments
Spatially distributed gradient-based calibration and parametric sensitivity of a spatialized hydrological model over 235 French catchments Open
Study Region:: France, 235 catchments. Study focus:: Improving spatially distributed hydrological modeling, especially for flood forecasting over large areas, is a challenging task with sparse discharge data and generally consists in diffi…
View article: SMASH v1.0: A Differentiable and Regionalizable High-Resolution Hydrological Modeling and Data Assimilation Framework
SMASH v1.0: A Differentiable and Regionalizable High-Resolution Hydrological Modeling and Data Assimilation Framework Open
The smash software is a differentiable and regionalizable framework enabling modular high-resolution hydrological modeling and data assimilation, from catchment to regional and country scales, for water research and operational application…
View article: Learning Regionalization Using Accurate Spatial Cost Gradients Within a Differentiable High‐Resolution Hydrological Model: Application to the French Mediterranean Region
Learning Regionalization Using Accurate Spatial Cost Gradients Within a Differentiable High‐Resolution Hydrological Model: Application to the French Mediterranean Region Open
Estimating spatially distributed hydrological parameters in ungauged catchments poses a challenging regionalization problem and requires imposing spatial constraints given the sparsity of discharge data. A possible approach is to search fo…
View article: Spatially distributed calibration of a hydrological model with variational optimization constrained by physiographic maps for flash flood forecasting in France
Spatially distributed calibration of a hydrological model with variational optimization constrained by physiographic maps for flash flood forecasting in France Open
This contribution presents a regionalization approach to estimate spatially distributed hydrologic parameters based on: (i) the SMASH (Spatially distributed Modelling and ASsimilation for Hydrology) hydrological modeling and assimilation p…
View article: Spatially distributed calibration of a hydrological model with variational optimization constrained by physiographic maps for flash flood forecasting in France
Spatially distributed calibration of a hydrological model with variational optimization constrained by physiographic maps for flash flood forecasting in France Open
<p>The estimation of storage and fluxes in surface hydrology is an essential scientific question related to major socio-economic issues, especially when forecasting extreme floods and droughts with the undergoing climate change. Adva…
View article: SMASH - Spatially distributed Modelling and ASsimilation for Hydrology: Python wrapping towards enhanced research-to-operations transfer
SMASH - Spatially distributed Modelling and ASsimilation for Hydrology: Python wrapping towards enhanced research-to-operations transfer Open
<p>The prediction of extreme hydrological events at high resolution is a tough scientific challenge linked to major socio-economic issues. Accurate numerical models are crucially needed to perform reliable and meaningful operational …
View article: Does Flash Flood Model Performance Increase with Complexity? Signature and Sensitivity-Based Comparison of Conceptual and Process-Oriented Models on French Mediterranean Cases
Does Flash Flood Model Performance Increase with Complexity? Signature and Sensitivity-Based Comparison of Conceptual and Process-Oriented Models on French Mediterranean Cases Open
We compare three hydrological models of different complexities, GR4H (lumped, continuous), SMASH (distributed, continuous), and MARINE (distributed, event-based), for Mediterranean flash flood modeling. The objective was to understand how …
View article: Adjoint-based spatially distributed calibration of a grid GR-based parsimonious hydrological model over 312 French catchments with SMASH platform
Adjoint-based spatially distributed calibration of a grid GR-based parsimonious hydrological model over 312 French catchments with SMASH platform Open
Reducing uncertainty and improving robustness and spatio-temporal extrapolation capabilities remain key challenges in hydrological modeling especially for flood forecasting over large areas. Parsimonious model structures and effective opti…
View article: Assessing parsimonious hydrological model structures with distributed adjoint-based calibration in SMASH Python-Fortran platform on large sample of French catchments and flash floods
Assessing parsimonious hydrological model structures with distributed adjoint-based calibration in SMASH Python-Fortran platform on large sample of French catchments and flash floods Open
<p><span>This</span> <span>contribution</span> <span>presents</span> <span>improvements</span> <span>of</span> <span>conceptual</span> <span>models</spa…
View article: Comment on hess-2021-414
Comment on hess-2021-414 Open
Abstract. The improvement of flood forecast ability of models is a key issue in hydrology, particularly in Mediterranean catchments that are subjected to strong convective events. This contribution compared models of diffe…
View article: Signature and sensitivity-based comparison of conceptual and process oriented models, GR4H, MARINE and SMASH, on French Mediterranean flash floods
Signature and sensitivity-based comparison of conceptual and process oriented models, GR4H, MARINE and SMASH, on French Mediterranean flash floods Open
The improvement of flood forecast ability of models is a key issue in hydrology, particularly in Mediterranean catchments that are subjected to strong convective events. This contribution compared models of different complexities, lumped G…
View article: Signature & sensitivity-based comparison of conceptual and process oriented models GR4H, MARINE and SMASH on French Mediterranean flash floods
Signature & sensitivity-based comparison of conceptual and process oriented models GR4H, MARINE and SMASH on French Mediterranean flash floods Open
<p>Faced with the major challenges of floods and droughts forecasting, especially with the ongoing climate change and potential intensification of the hydrological cycle, advanced modeling tools are needed to perform effective predic…
View article: Performance and sensitivity of a spatially distributed hydrological conceptual flood model with snow components.
Performance and sensitivity of a spatially distributed hydrological conceptual flood model with snow components. Open
<p>In France, flash floods are responsible for a significant proportion of damages caused by natural hazards, either human or material. Hence, advanced modeling tools are needed to perform effective predictions. How…
View article: Flash flood impacts nowcasting within the PICS project (2018-2022): End-users involvement and first results
Flash flood impacts nowcasting within the PICS project (2018-2022): End-users involvement and first results Open
International audience
View article: On the potential of variational calibration for a fully distributed hydrological model: application on a Mediterranean catchment
On the potential of variational calibration for a fully distributed hydrological model: application on a Mediterranean catchment Open
Calibration of a conceptual distributed model is challenging due to a number of reasons, which include fundamental (model adequacy and identifiability) and algorithmic (e.g., local search vs. global search) issues. The aim of the presented…
View article: The PICS project: towards an integrated warning system for the nowcasting of flash flood impacts
The PICS project: towards an integrated warning system for the nowcasting of flash flood impacts Open
International audience
View article: Answer RC1
Answer RC1 Open
The paper lacks clear scientific questions.Three points are mentioned by the authors at the end of the introduction: -upgrading the GRD model, -calibrating GRD with a variational approach, and finally, -upgrading the variational approach.T…
View article: Answer RC2
Answer RC2 Open
The abstract should be more precise and synthetic, both on the context and on the results of the study.2. P1 L5 Replace "accounting for spatial variability of the rainfall and the catchment properties,
View article: Answer RC3
Answer RC3 Open
The methodology is quite
View article: hess-2019-331 review: On the potential of variational calibration for a fully distributed hydrological model: application on a Mediterranean catchment
hess-2019-331 review: On the potential of variational calibration for a fully distributed hydrological model: application on a Mediterranean catchment Open
The purpose of this article is to present a calibration methodology based on variational data assimilation using the adjoint state of a conceptual rainfall-runoff model.The proposed model is then tested in the Gardon catchment.The added va…
View article: Review
Review Open
The issue of calibrating distributed hydrological models is of high interest for the readers of HESS.The authors apply a variational algorithm to estimate the parameters of a conceptual model distributed over a 1-km grid.Despite this very …
View article: On the potential of variational calibration for a fully distributed hydrological model: application on a Mediterranean catchment
On the potential of variational calibration for a fully distributed hydrological model: application on a Mediterranean catchment Open
Flash flood alerts in metropolitan France are provided by SCHAPI (Service Central Hydrométéorologique et d’Appui à la Prévision des Inondations) through the Vigicrues Flash service, which is designed to work in ungauged catchments. The AIG…
View article: Optimal Operation of the Multireservoir System in the Seine River Basin Using Deterministic and Ensemble Forecasts
Optimal Operation of the Multireservoir System in the Seine River Basin Using Deterministic and Ensemble Forecasts Open
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