European and French Research Projects
Deode
Deode is a European project which proposes a solution for making on-demand configurable models for forecasting of environmental extremes at the sub-km scale. I co-supervise with Fabrice Voitus the PostDoc of Léo Rogel on the 3D turbulence in AROME.
TeamX
The TEAMx Observational Campaign provides data observation on the mountain boundary Layer. Among other aspects, it investigates the transport and exchange of momentum, mass and energy between the Earth’s surface and the atmosphere in mountainous terrain. I was part of the working group on Surface-Atmosphere Exchange. I was interested by the data of the field campaign to evaluate 3D turbulence in AROME.
Sofog3D
SOFOG3D aimed to advance our understanding of fog processes to improve fog forecasts by numerical weather prediction models. With Yann Seity, I co-supervised Salomé Antoine’s PhD on improving hectometric-scale fog forecasting in the AROME model.
High-Tune
The High-Tune project aimed to improve and calibrate the parameterizations involved in the representation of boundary-layer clouds. It aims to demonstrate the contribution of a machine learning tool for adjusting the free parameters of parameterizations. I participated to some coding sprints around AROME v46t1. I co-supervised an internship comparing AROME-ARPEGE-MESONH and LMDZ mass-flux parameterization and the PostDoc of Florent Brient on boundary-layer downdrafts.
Grey Zone Project
The Grey Zone Project is an international collaborative effort which aims at supporting the development of scale-aware turbulence and convection parameterizations across model resolutions. I participated to the first inter-comparaison with AROME and Méso-NH. I was part of the scientific committee of the second phase of the Grey Zone Project.
Music
Music‘s aim was to make progress in understanding and modeling the storm systems involved in Mediterranean episodes, in order to improve their forecasting over different time horizons. I made Méso-NH and AROME-500m simulations of an Hymex case for that project.
Collaboration between weather forecasting centers
ECMWF is the European Centre for Medium-Range Weather Forecasts. ECMWF is both a research institute and an operational service, producing global numerical weather predictions. International collaboration is fundamental to the work of ECMWF. In particular, Météo France works in close collaboration with ECMWF. I have been invited twice to present my work at ECMWF.
The general goal of consortium ACCORD is to jointly develop and make available to the consortium Members a state-of-the-art NWP system for high-resolution limited area modelling with a focus on high impact weather forecasting. Among other things, in the ACCCORD framework, I supervised David Lancz (HMS) a PhD student visiting Météo France on the quantification of the turbulence gray zone in AROME.
Collaborative papers on (extreme) high resolution NWP
At the suggestion of George Efstathiou (MetOffice), I led a review article on the grey zone of convective boundary layers with 9 other co-authors (2020). I contributed to a prospective paper (published in 2024) on the future of high-resolution NWF (led by Humphey Lean – MetOffice – and Natalie Theeuwes – KNMI).
French atmospheric modeling community
The Ateliers de Modélisation de l’Atmosphère (AMA-Atmosphere Modeling Workshops) in Toulouse have brought together the French community interested in modeling the atmosphere and its interfaces, to better understand the processes that take place there and also to anticipate their evolution on weather (forecasting) and climate (projections) scales. I have presented my work to the AMA on numerous occasions.
Dephy brings together the observation, high-resolution modelling, weather and climate forecasting French communities around research into physical parameterizations for atmospheric modelling. It brings together the process study, observation and modeling communities around a single objective: to develop and improve the physical content of models used for climate studies and numerical weather forecasting. The project involves the various French models: the Meso-NH research model (used from metric resolutions to resolutions of around ten kilometers, ∆x 1m-10km), the MAR regional model (∆x 10km), the two numerical weather prediction models: the limited-area model AROME (∆x 1km) and the global model ARPEGE (∆x 10km) and the two French climate models ARPEGE-Climat and LMDZ (∆x 100km).
Field Campaigns
When I was a young researcher, I took part in several measurement campaigns as a volunteer. That was the case during :
- BLLAST : Understanding the late afternoon boundary-layer (Marie Lothon, Laboratoire d’Aerologie). Dominique Legain (CNRM) was testing a new system allowing for the sonde to slowly descend with the second balloon to perform a new sounding. My job was to fetch the radiosondes that often delicately fell into people’s gardens.
- Eurequa (Aude Lemonsu, CNRM) : The idea was to gain a better understanding of the interaction between different environmental parameters and certain practices of the inhabitants. The environmental characterization focused on microclimate, noise and air quality. My job was to walk a route at a fixed time with weather measuring instruments on my back.
- Sofog3D (Frédéric Burnet, CNRM) : I was forecasting fog to decide when to launch intensive observation periods.