Skip to Main content Skip to Navigation
New interface

Transport et dépôt de particules et radionucléides au puy de Dôme, France

Abstract : Aerosol particles play a key role both on air quality and on the radiative balance of the Earth. Their sources, as well as their deposition are key stages in their life cycle. This work is a contribution in a better knowledge of the chemical composition of particles, cloud droplets and rain droplets. The specificity of our study is to couple, on three sampling sites (puy de Dôme (1465 m a.s.l.), Opme (660 m a.s.l.) and Cézeaux (400 m a.s.l.)), observations on the chemical composition and the radionuclides activity in cloud/rain/aerosol phases. We observed, in aerosol phase, ionic and carbonaceous concentrations and radionuclides activity higher in summer than in winter at the puy de Dôme, inverse of the seasonal variation observed at the Cézeaux for chemical compounds. From these observations, we offer a representative composition de each mass air type. This work is supplemented by a study of cloud and rain liquid, which allow us to study the scavenging of the pollutants by the rain. The chemical composition of the rain reveales a similar behaviour to that of the particles at the puy de Dôme, indicating that the role of activation and scavenging of particles is preponderant in the composition of the rain. This is confirmed by a study of the environmental and structural factors of the rain which do not seem to influence the washout ratio in a significant manner. Our work highlights the role of long range transport of pollutants in the composition of atmospheric liquid phase.
Document type :
Complete list of metadata
Contributor : Camille Meyer Connect in order to contact the contributor
Submitted on : Tuesday, August 28, 2012 - 2:55:41 PM
Last modification on : Tuesday, October 19, 2021 - 6:58:49 PM
Long-term archiving on: : Friday, December 16, 2016 - 8:27:45 AM


  • HAL Id : tel-00725978, version 1



Lauréline Bourcier. Transport et dépôt de particules et radionucléides au puy de Dôme, France. Océan, Atmosphère. Université Blaise Pascal - Clermont-Ferrand II, 2009. Français. ⟨NNT : 2009CLF21909⟩. ⟨tel-00725978⟩



Record views


Files downloads