CHIANTI - Atmospheric Chemistry

The CHIANTI team (CHImie Atmosphérique, Neige, Transferts et Impacts) works to identify the sources, sinks and transformation mechanisms of chemical species (gases and particles) in the atmosphere generated by human activities and natural processes, in order to determine their impact on climate, atmospheric composition, air quality and ecosystems.

Our air quality research theme relies on extensive analytical resources for aerosol analysis, through the development of tracers and health indicators for exposure to air pollution. Advanced statistical methods are then used to trace pollutant sources and their impact on health. For many years, we have also specialized in the study of polar and high-altitude environments, taking particular account of the role of snow as an interface between the atmosphere and the environment. All these observational data enable us to identify chemistry-climate, chemistry-ecosystem and chemistry-health feedbacks.

We also focus on the development and use of atmospheric chemistry models (WRF-Chem, GEOS-Chem, PACT-1D) that describe the sources, sinks and transformation of aerosols, microplastics and gases (e.g., mercury, halogens) in the atmosphere in order to quantify their impact on health and climate. Our projects involve modeling processes, including interactions at interfaces (soil, snow, ice, ocean), from the local scale (urban, observation site) to the regional or global scale, with a particular focus on the polar regions.

Gaëlle UZU & Jennie THOMAS

Team lead contacts : Gaëlle Uzu and Jennie Thomas