Job offer

Organisation/Company Université Toulouse III Paul Sabatier Department Univers Planète Espace Environnement Research Field Computer science » Modelling tools Researcher Profile First Stage Researcher (R1) Positions Postdoc Positions Application Deadline 9 Apr 2026 - 12:00 (Europe/Paris) Country France Type of Contract Temporary Job Status Full-time Hours Per Week 35 Offer Starting Date 1 Jun 2026 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure? No Offer Description

The Centre d’Études Spatiales de la BIOsphère (CESBIO)

is a public research laboratory dedicated to advancing our understanding of continental surface processes and their interactions with climate and human activities. CESBIO scientists make extensive use of remote sensing technologies to monitor environmental changes across spatial and temporal scales and to develop models that address key societal challenges related to biodiversity, climate change, food security, and water resources. The laboratory also plays a central role in the development and promotion of Earth Observation, contributing to the design, implementation, and scientific exploitation of numerous satellite missions. CESBIO is a Unité Mixte de Recherche (Joint Research Unit) bringing together the

CNES ,

CNRS ,

IRD , and the

University of Toulouse III – Paul Sabatier and associate to INRAe as a mixt service unit. The work will consist to develop a method of normalization to prepare the future processing of TRISHNA data that will be contaminated by the directional effects. Different tasks are envisaged. First, it will consist to explore the spectral synergy through simultaneous inversion of optical-thermal TEKDM (Time Evolving of Kernel-Driven Models) models against synthetic data sets issued from DART and SCOPE models. Still using these two physical models, a calibration of directional kernel coefficients of TEKDM will be established with physical variables. To obtain synthetic data sets and generating diurnal temperature cycles (DTC), various sources of input will be considered (in situ, ECMWF). Ground reference will be the vineyard site of Malagaon (India) and the maïze site of Denguin (France) that are equipped of optical and thermal cameras and for which a significant number of ancillary measurements are available. Different surface combinations will be explored for DTC, considering mixing of soil/vegetation/ vs. shade/sunlit in order to investigate the impact of thermal inertia. Scaling-up to plot scale will rely on UAV flights. Finally, well-calibrated TEKDM will serve to simulate the TRISHNA directional temperature, to be compared with the normalized Where to apply

E-mail jean-louis.roujean@utoulouse.fr Requirements

Research Field Computer science » Modelling tools Education Level PhD or equivalent Skills/Qualifications Field experiments, modeling, writing peer-review paper Specific Requirements research Field:D ata processing and analysis plus knowledge of radiative transfer in optical and thermal domains Additional Information

Selection process Research Engineer for 4 months contract Additional comments CESBIO is identified as a security restrictive zone (ZRR) laboratory. Candidate is required to follow a authorization process to be granted access. He will also required to follow closely the security guidance rules once recruited.

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