Informations générales
Intitulé de l'offre : M/F Ph.D. student in atmospheric sciences (H/F)
Référence : UMR3589-CYRDEN-002
Nombre de Postes : 1
Lieu de travail : TOULOUSE
Date de publication : samedi 4 octobre 2025
Type de contrat : CDD Doctorant
Durée du contrat : 36 mois
Date de début de la thèse : 1 décembre 2025
Quotité de travail : Complet
Rémunération : 2200 € gross monthly
Section(s) CN : 01 - Interactions, particules, noyaux du laboratoire au cosmos
Description du sujet de thèse
Every year, Europe is affected by wildfires that emit large and highly variable amounts of aerosols into the atmosphere. The impact of these aerosols on the climate depends on many complex, interdepend-ent processes influenced by factors such as the size and composition of the particles emitted, the burn-ing conditions, and the meteorological and chemical conditions in the atmosphere. These processes are only partially understood to date. Consequently, there are still many uncertainties in the representation of aerosols from forest and vegetation fires in climate models, resulting in conflicting estimates of their radiative effect (from positive to negative). This thesis aims to improve our understanding of the effects of aerosols emitted by wildfires in Europe on the regional climate by combining observations and re-gional climate modelling. This thesis will use observations from the SILEX airborne campaign of the EUBURN international research programme, conducted in summer 2025, to characterise the properties of biomass burning aerosols during atmospheric transport, depending on surface conditions and at-mospheric meteorological and chemical conditions. This new knowledge will be used to evaluate and improve the representation of biomass burning aerosols in the CNRM-ALADIN regional climate model. The impact of biomass burning aerosols on the regional climate, which will thus be better represented, will be estimated using new regional climate simulations conducted over past periods in Europe.
Contexte de travail
The CNRM is a joint research unit under the dual supervision of Météo-France and the CNRS. Its research covers meteorology and climate, ranging from observing and understanding processes to developing weather forecasting and climate projection systems. The Aerosol Cloud and Fire (AERONEF) team aims to observe, characterise and understand the interactions between aerosols, radiation and clouds, as well as between wildfires and the atmosphere.
This thesis topic is part of the EUBURN international research programme, which comprises around 30 research laboratories, meteorological centres, forest fire control agencies, biodiversity and air quality protection agencies, and private companies. Consequently, numerous international contacts and collaborations will be established during the course of this thesis.