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Portal > Offres > Offre FR636-ALERUB-016 - Postdoc en modélisation réduite du système Terre (H/F)

Postdoc in reduced modeling of the Earth system

This offer is available in the following languages:
Français - Anglais

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General information

Reference : FR636-ALERUB-016
Workplace : PARIS 05
Date of publication : Wednesday, May 15, 2019
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 July 2019
Proportion of work : Full time
Remuneration : Gross monthly salary: from 2 605€ et 3 000€ brut
Desired level of education : PhD
Experience required : Indifferent


Take control, update and further develop the OSCAR model. In particular, integrate the various scientific advances made by the other members of the project team into the model, carry out ensembles of climate simulations, quantify possible emission trajectories and formulate the results in terms of climate objectives for decision-makers.


1) Produce scripts allowing the systematic calibration of OSCAR's "climate" and "carbon cycle" modules on new CMIP6 data (mainly DECK and C4MIP experiments). Review and adapt existing calibration algorithms.
2) Extend the existing "climate" module and its calibration by introducing climate responses specific to different forcing mechanisms (methane, ozone, aerosols) based on climate experiments of the PDRMIP and RFMIP projects, in conjunction with the other members of the project team.
3) Establish the EOFs of climate responses to each forcing in order to improve the representation of the regional climate response in OSCAR and reformulate the OSCAR climate module to explicitly integrate the various time scales of climate feedbacks, in conjunction with other teams and according to project progress.
4) Perform ensemble climate simulations and analyze the results.
5) Write the scientific articles associated with these developments and their implications for the quantification of key climate system metrics (TCR, ECS, TCRE).


Doctoral degree in climate science or in a related field
Knowledge of climate feedback mechanisms at different scales
First experience in modelling
Basic knowledge of Unix / Linux and bash programming
Knowledge of the Python computer language
Proficiency in numerical resolution tools (such as numpy/scipy, matlab or R)
Excellent autonomy compatible with remote supervision
Excellent ability to write scientific articles in English
Ability to work within an international team with a wide range of expertise
Organizational rigour, initiative and adaptability
Desirable experience with climate model emulation tools
Desirable experience in processing CMIP5 or similar data

Work Context

The Institut Pierre-Simon Laplace (IPSL, and its Climate Modelling Centre ( are part of the European CONSTRAIN project coordinated by the University of Leeds and involving many other European partners over the period 2019-2023. The objectives of this project are to improve our understanding and quantification of (i) the intensity and patterns of anthropogenic radiative forcings; (ii) cloud-related climate feedbacks and their impact on climate sensitivity; and (iii) the impact of ocean variability on the climate system's response to anthropogenic forcings. Scientific advances in these three areas will also need to be integrated and translated to inform climate policies in terms of mitigation and adaptation to climate change. One of the physical modelling tools that will be used for this integration is the OSCAR compact model of the Earth System (, built as an emulator of complex process-based climate models. OSCAR allows a large number of experiments to be carried out in order to quantify uncertainties and inform climate policies. The development and exploitation of this model is one of the two missions of the IPSL for the CONSTRAIN project. The IPSL is therefore looking for a post-doctoral researcher to carry out this mission.

Constraints and risks

The post-doctoral fellow will be based at the Institut Pierre-Simon Laplace on the Pierre and Marie Curie (Jussieu) campus of Sorbonne Université in Paris, with the possibility of being hosted at IIASA, in Laxenburg, Austria, for part of the work.

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