Distribution of the LES concentration predictions in the input parameter space

PPMLES – Perturbed-Parameter ensemble of MUST Large-Eddy Simulations

his dataset contains an ensemble of large-eddy simulations of atmospheric pollutant dispersion reproducing the MUST field experiment for varying wind meteorological conditons.

September 2024 · Eliott Lumet, Mélanie C. Rochoux, Thomas Jaravel
Reliability diagrams of the surrogate uncertainty estimates.

Uncertainty-aware surrogate modeling for urban air pollutant dispersion prediction

This paper tells the construction and validation of a surrogate model for atmospheric pollutant dispersion. We show that the selected approach is able to embed accurately the uncertainty at stakes.

August 2024 · Eliott Lumet, Mélanie C. Rochoux, Thomas Jaravel, Simon Lacroix
Sensitivity of the mean concentration to the wind direction and to the friction velocity.

EnKF workshop 2024: Reduced-cost EnKF for parameter estimation of microscale atmospheric pollutant dispersion models

In this presentation, we implement and validate a reduced-cost EnKF that estimate meteorological forcing parameters, such as wind direction, for large-eddy simulations of microscale pollutant dispersion.

June 2024 · Eliott Lumet, Mélanie C. Rochoux, Thomas Jaravel, Simon Lacroix
Large-scale eddy simulation of atmospheric flow and pollutant dispersion in a simplified urban canopy.

EGU2024: Surrogate-based data assimilation for microscale atmospheric pollutant dispersion

Poster presentation of a data assimilation workflow for microscale pollutant dispersion. The use of a surrogate model enables real-time data assimilation and large ensemble size while also providing an estimation of the uncertainties involved.

April 2024 · Eliott Lumet, Mélanie C. Rochoux, Thomas Jaravel, Simon Lacroix
Large-scale eddy simulation of atmospheric flow and pollutant dispersion in a simplified urban canopy.

[PhD Thesis] Assessing and reducing uncertainty in large-eddy simulation for microscale atmospheric dispersion

Poster presentation of a data assimilation workflow for microscale pollutant dispersion. The use of a surrogate model enables real-time data assimilation and large ensemble size while also providing an estimation of the uncertainties involved.

February 2024 · Eliott Lumet
Atmospheric microscale internal variability effect on pollutant concentration.

Assessing the Internal Variability of Large-Eddy Simulations for Microscale Pollutant Dispersion Prediction in an Idealized Urban Environment

This paper provides a methodology to assess the effect of atmospheric microscale internal variability on time statistics. It is then applied to the validation of a LES model of the MUST field experiment.

January 2024 · Eliott Lumet, Thomas Jaravel, Mélanie C. Rochoux, Olivier Vermorel, Simon Lacroix
Sensitivity of the mean concentration to the wind direction and to the friction velocity.

HARMO21: Sensitivity analysis of microscale pollutant dispersion large-eddy simulations for observation network design

In this presentation, we investigate the sensitivity of microscale dispersion large-eddy simulations to inflow boundary conditions, such as wind direction. This analysis constitutes a first step in the construction of a data assimilation workflow.

September 2022 · Eliott Lumet, Mélanie C. Rochoux, Simon Lacroix, Thomas Jaravel, Olivier Vermorel