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Des scientifiques du CNRS Terre & Univers et du CNRS Ecologie & Environnement ont étudié les bouleversements

CR26-AgroEcoSystem-3 - You will join the CESBIO (Centre for the study of the biosphere from space, https://www.cesbio.cnrs.fr) joint research unit associating INRAE/Univ Toulouse/CNES/CNRS/IRD, located in Toulouse. The research conducted at CESBIO aims to study the functioning and dynamics of the continental biosphere under climatic and anthropological constraints with considerable use of satellite remote sensing. Within this unit, you will join the AgroEcosystems team that develops spatialised modelling approaches to estimate production, flows, and balance of C, water, and energy. You will be supported by researchers and engineers developing and using the AgroCarbonEO chain.Assessing the contribution of agriculture to climate change has long been based primarily on the understanding of biogeochemical-type processes (agricultural greenhouse gas emissions (GHG), soil carbon sequestration), without taking into account biogeophysical processes, of which the contribution to potential climate cooling remains largely overlooked. This is the case of albedo, of which the management through agricultural practices has consequences on the radiative forcing of the atmosphere that remain to be specified. For instance, it is probable that the presence of catch and cover crops allows synergies between the biogeochemical and biogeophysical effects to mitigate global warming; the effects of other practices remain to be shown, in particular on agroecological systems or systems in transition. Within this context, you will develop work aimed at qualifying, measuring, and modelling the dynamics of agricultural surface albedo. You will draw on modelling approaches assimilating remote sensing data in spatialised agronomical models to objectify the biogeochemical and biogeophysical effects of agricultural practices over extensive areas. Your work will allow climate modellers to better assess the net climate effects of changes in practices at regional/global level, and climate feedback on crop functioning.You will analyse the processes and determinants (e.g. soil and climate, practices, vegetation) of albedo dynamics of agricultural land and their effects on the climate to identify relevant agricultural practices to reduce global warming. You will develop work on the modelling platform AgriCarbon-EO developed at CESBIO to simulate the dynamics of biogeophysical processes induced by changes in practices.

Mehrez Zribi, directeur de l'Observatoire Midi-Pyrénées (OMP) et chercheur du CNRS, rattaché au centre d'études spatiales de la biosphère (CESBIO) à Toulouse, tire la sonnette d'alarme sur la sécheres...

Powered by the Soil Carbon International Research Consortium, Impact4soil offers data and meta-analysis on soil carbon, practices, and land management solutions.

Au mois de février, dans les Alpes, la neige a brillé par son absence. Entre le 27 janvier et le 21 février, la région a enchaîné vingt-six jours consécutifs en dessous des minimums d'enneigement connus, rapporte France Info, citant les données du Centre d'études spatiales de la biosphère (Cesbio). Sur la totalité du mois de février, la superficie au sol recouverte de neige dans les régions alpines était en moyenne de seulement 37,7   %. «   C'est lié à un mois de février très doux. L'enneigement a été très (...) Lire la suite - En bref / Climat

Guillaume Thirel est chargé de recherche au sein du Centre d’études spatiales de la biosphère (CESBIO), ses recherches portent sur l’analyse des effets du changement climatique sur l’hydrologie et sur...

The CNRS ECOFEU project is recruiting a full-time postdoctoral researcher to estimate dead forest fuel caused by dieback in metropolitan France using satellite data, advanced modeling, and machine learning. Based at CESBIO in Toulouse, this 18-month role contributes directly to wildfire prevention and climate resilience research.