Postdoctoral position on urban climate modelling F/M
Société : Météo France Lieu : Haute-Garonne (Occitanie)
Présentation de l'entreprise
Expert public de la météo et du climat, Météo-France est à vos côtés pour contribuer à votre sécurité au quotidien et vous aider à prendre les meilleures décisions, dans un climat qui change. Face à des épisodes météo dangereux encore plus intenses et plus fréquents sous l’effet du changement climatique, nos missions au service de votre sécurité sont cruciales. Nous mobilisons notre expertise, notre excellence scientifique et technologique pour vous permettre d’anticiper les phénomènes météorologiques et climatiques à enjeux, et de vous y adapter.
Retrouvez-nous en ligne : https://meteofrance.com/carte-didentite-de-meteo-france
Rejoindre Météo France, c'est intégrer une organisation multi-sites, situés en hexagone, en Outre-mer, etc. L'organisation de Météo-France s'appuie sur des directions centrales et des directions interrégionales. Ci-dessous, la présentation de la direction que vous pourriez rejoindre :
Présentation direction et/ou service
Pourquoi nous rejoindre ?
Embarquez pour une aventure stimulante et au service de tous aux côtés d’hommes et de femmes engagés quotidiennement face aux défis posés à notre société par la météo et le climat. Et ainsi bénéficiez des avantages suivants : horaires flexibles, RTT, télétravail, restaurant administratif ou ticket restaurant, participation à hauteur de 75% pour les transports en commun, participation pour la mutuelle, associations sportives et culturelles en fonction du site concerné, (escalade, gym, poterie, théâtre etc..).
D'autres avantages vous attendent, venez les découvrir !
Descriptif du poste
Société : Météo France Catégorie : Intérim Activité : Services Filiere : Assurance Metier : Audit interne Lieu : Haute-Garonne (Occitanie) Durée : CDD Salaire : 41640 EUR
Mission
As a public weather and climate expert, Météo-France is at your side to contribute to your day-to-day safety and help you make the best decisions in a changing climate. Faced with dangerous weather episodes that are even more intense and more frequent as a result of climate change, our missions in the service of your safety are crucial. We mobilize our expertise and our scientific and technological excellence to help you anticipate and adapt to challenging weather and climate phenomena.
Find us online: https://meteofrance.com/carte-didentite-de-meteo-france
Joining Météo France means joining a multi-site organization, located in France, overseas, etc. Météo-France is organized into central and inter-regional divisions. Below is a presentation of the department you could join :
The Centre national de recherches météorologiques (CNRM) is a joint research unit (UMR 3589) set up by the CNRS and Météo-France. Its research activities are mainly carried out at the Météo-France sites in Toulouse, Grenoble and Lannion.
The CNRM is responsible for a large part of the research activities of Météo-France, the national weather and climate service. As a result, many of the CNRM’s objectives are guided by the operational missions of Météo-France, which means that the CNRM works very closely with the production teams of Météo-France and allows research projects to be prioritised.
Priority is given to needs related to the protection of people and property: weather forecasting on several space-time scales, atmospheric physics and dynamics, climate knowledge and evolution, human-climate-atmosphere interactions, etc.
The GMAP team is responsible of the development of the Numerical Weather Prediction model used at Météo-France. The AROME model is the non-hydrostatic model used operationally at 1.3km over France to improve short-range forecasting of dangerous phenomena or fog and urban heat islands during heat waves.
UrbanAIR is an European project aiming to build research-driven platform that equips cities with the information they need to decide where to intervene, who to protect, and what to prioritise before challenges escalate. The project is led by TU-Delft in the Netherlands.
This project addresses a global gap in mesoscale modelling, bridging the resolution valley between coarse continental forecasts and the fine, street-level realities of modern cities. It connects Destination Earth forecasts with high-resolution urban models through multi-scale integration.
The postdoctoral position is focused on WP6 aiming to implement the representation of the 3D effect in the turbulence scheme at the hectometric scale (~200m).
The objective of the task is to improve the turbulence scheme by adding the 3D effect at 200m,and to optimize the vertical and horizontal length in the AROME model.
The candidate will use the Météo-France HPC for the development and preliminary test and will work inclose collaboration with SMHI and KNMI researchers by using the Destination-Earth (DE_330) framework.
The topic is to provide improved forecast at 200m (or 100m) for selected dates over several pilot cities (Antwerp, Barcelona, Paris, Bristol) used by Large Eddy Simulation (LES) model or Urban model at the building scale (<50m grid spacing).
In more details:
* The pseudo 3D terms are now available in the AROME code, however the preliminary results show some deficiencies in terms of impact probably due to the use of the operational mixing length, especially at 500m.
* At 200m, there is a clear need to revisit the horizontal and vertical length scale, and probably update the numerical horizontal diffusion and dynamics option. The researcher will be in charge to evaluate several formulations for the horizontal and vertical length scale and improve the computation of the surface drag in complex topography (Urban Area).
* The evaluation will be done first over Paris by using the PANAME field campaign and then on the so-called “action cities” of Antwerp and Barcelona.
* The impact of the building height on the PBL has been improved with the multi-layer coupling option available in SURFEX, however a comparison with a “explicit” integration of the building heights in the orography will be done at 200m and at 100m.
* The researcher will also interact with other partners of the project within the WP6-7 (large-scale models) and the WP9 (building-resolving models).
Profil recherché
You hold a PhD in atmospheric sciences, computational fluid dynamics or equivalent. You have extensive experience in turbulence, numerical weather prediction and have very good knowledge of physical processes.
You have experience on validating weather models with experimental data.
You know AROME and Méso-NH models, as well as python and fortran90 languages.
You are comfortable working in a team and within a project.
You know how to promote your work by publishing scientific articles.
Finally, a level of French language B1/B2 is essential to successfully carry out your missions.
Application deadline : 15/11/2025
Email contacts for any further information : : Eric.bazile@meteo.fr ; Fabrice.voitus@meteo.fr CLIQUER ICI POUR POSTULER
