À vos côtés dans un climat qui change
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.
Engineer in marine biogeochemistry modelling using PISCES F/M
Toulouse, 31057
CDD
01/07/2026- 30/06/2028
2705.55€
Description
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 becoming part of a multi-site organisation, with locations across mainland France, the overseas territories, and elsewhere. Météo-France’s structure is based on central departments and inter-regional departments. Below is a presentation of the department you may join:
The Department of Higher Education and Research brings together Météo-France’s research entities (primarily CNRM, SAFIRE, LACy), the National School of Meteorology, and the shared administrative and IT support services (PGA).
The CNRM is a Joint Research Unit (UMR 3589, www.umrcnrm.fr) jointly supervised by Météo-France and the CNRS.The CNRM conducts research in the fields of meteorology and climate, and observation, ranging from the understanding and modelling of processes to the development of weather forecasting and climate projection systems. The CNRM ensures a regular transfer of knowledge to the operational services of Météo-France.
The successful candidate will join the EST (Earth System Studies) team within the CNRM’s Large-Scale Modelling and Climate Group (GMGEC), whose main focus is to improve our understanding of the Earth system’s response to various anthropogenic disturbances.
The TRACCS project:
This recruitment is part of the TRACCS research programme (Transforming Climate Modelling for Climate Services, https://climeri-france.fr/pepr-traccs/), which brings together the French climate modelling community. Its activities range from fundamental understanding of climate change and its impacts to the development of climate service prototypes cocreated by stakeholders and climate modelling experts. The aim is to accelerate the development of climate models to meet societal expectations regarding climate action, particularly in the field of climate change adaptation.
The programme is organised into 10 targeted projects and a governance project, and will be supplemented by projects in response to calls for proposals. It has a budget of €51 million over 10 years. It is co-led by the CNRS and Météo-France, alongside seven other academic partners. Activities under the governance and targeted projects will mainly be carried out in the Paris region (laboratories of the Institut Pierre-Simon Laplace (IPSL)), in Toulouse (CNRM and other Météo-France entities, CERFACS) and in Grenoble (Institut desGéosciences de l’Environnement (IGE)).
The proposed post forms part of TRACCS’s Targeted Project 8, known as CYCL-ESM, which focuses on modelling ocean biogeochemical cycles and their interactions with the climate. CYCL-ESM aims to develop Earth System Models (ESMs) that incorporate a better representation of the interactions between biogeochemical cycles and the climate, and in particular the chain of processes ranging from emissions to climate change.
The specific objectives of CYCL-ESM are as follows:
- To improve the representation of key biogeochemical cycles in French ESMs
- To improve coupling and links with other components of the physical system (water, energy, dynamics)
- To improve the capacity and flexibility of the IPSL and CNRM ESMs for a wider range of applications: from climate to biodiversity, vulnerabilities and mitigation.
Why join us?
Embark on a stimulating adventure in the service of all, alongside men and women committed to the daily challenges posed to our society by the weather and climate. And enjoy the following benefits: flexible working hours, RTT, telecommuting, administrative restaurant or luncheon voucher, 75% contribution to public transport, contribution to health insurance, sports and cultural associations depending on the site (climbing, gym, pottery, theater, etc.).
Other benefits await you, come and discover them !
Missions
The successful candidate will be responsible for
• Improving existing tools (‘TOOLS_PISCES’) used to create configurations (primarily the ‘pre-processing’ of input forcings) for the PISCES community marine biogeochemistry model,
• Developing standardised common evaluation tools to document the various developments of PISCES
• Designing a community atlas to compare and evaluate PISCES outputs against observations.
The role forms part of the community of developers and users of the PISCES model, which is also used by IPSL and other
European laboratories. The successful candidate will be based at the CNRM in Toulouse, but will be required to liaise with developers at LOCEAN-IPSL in Paris and LOPS in Brest (via video conferencing, with travel to Paris and Brest as required).
The proposed role forms part of a long-term project by the PISCO community, which brings together a group of developers and users of the French marine biogeochemistry model PISCES. Within this framework, the three main objectives of this role will be:
1. Rewriting the “TOOLS_PISCES” used for pre-processing (this task is of cross-cutting interest to the NEMO and CROCO ocean modelling communities):
- Rewriting existing Fortran tools in Python to properly generate PISCES external input files (sediments, rivers: replacement of riverine.F90) and continental margin input files based on bathymetry (TOOLS_PISCES/dom_marge.F90).
- Write the documentation for these new tools
- Create the distribution repository for these tools
2. Implementation of common evaluation tools to compare and document the impacts of developments in PISCES:
- Develop test cases and associated evaluation metrics in Python
- Write the associated documentation
3. Design of a community atlas enabling the comparison of marine biogeochemistry outputs from PISCES with available
observations
The successful candidate is also expected to contribute to the team’s work on the development of the CNRM (CNRM-ESM) and IPSL Earth System platforms.
Complementary information :
This position is open to people with disabilities.
A two-year fixed-term contract.
A role with office hours based at the CNRM in Toulouse, including one or two assignments lasting a few days at LOCEAN-IPSL in Paris and/or LOPS in Brest.
Eligible for remote work: up to 3 days per week
Profil
The successful candidate must hold an engineering degree or a master’s degree in computer science, including advanced programming skills in Python
Experience in code development (in Python and/or Fortran)
Experience in numerical modelling of marine biogeochemistry would be an advantage
An interest in oceanography, marine biogeochemistry or climate science
Technical skills:
Very good command of Python
Knowledge of Fortran or equivalent
Proficiency in source code management tools (e.g. git)
Proficiency in the Unix environment
Advanced knowledge of tools for handling NetCDF files (nco, cdo, etc.)
Advanced knowledge of scientific analysis tools
Skills:
Ability to work independently and strong organisational skills
Rigorous approach to development and scientific analysis
Motivation and scientific curiosity
Spoken and written English at B2 level minimum
Personal qualities:
Good interpersonal skills and ability to work in a team
Availability and responsiveness
Application deadline: 09/05/2026
Contacts
Roland Séférian (roland.seferian@meteo.fr)
Laurent Oziel (laurent.oziel@meteo.fr)
Renaud Person (renaud.person@locean.ipsl.fr)
Sarah Berthet (sarah.berthet@meteo.fr)
