Skip to Main content Skip to Navigation
Theses

Paramétrisation des processus physico-chimiques de formation des nuages et étude de leurs impacts sur l'évolution de la composition chimique atmosphérique

Abstract : This work deals with the development of mixed phase cloud microphysics in the frame of a multiphase cloud chemistry model (Leriche et al., 2001). The coupled model is then applied to evaluate the role of this type of clouds on atmospheric species concentrations. Clouds are good transport vectors for pollutants, they scavenge them through precipitation and they also host complex chemical reactions. Through the parameterization of pollutants partition among the various cloud phases via riming, crystal growth by vapour deposition, melting and collection processes, the importance of ice phase and of crystal habit for the cloud chemical composition is demonstrated. Various air masses are simulated to form the clouds to assess the influence of cloud precipitation efficiency on their chemical composition. Tests on the ice retention and the burial during riming and crystal growth by vapour deposition respectively are realized to conclude in favour of the major role of ice phase in the trace compounds budget.
Complete list of metadatas

Cited literature [179 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00717866
Contributor : Camille Meyer <>
Submitted on : Friday, July 13, 2012 - 6:36:45 PM
Last modification on : Friday, April 5, 2019 - 8:07:51 PM
Document(s) archivé(s) le : Sunday, October 14, 2012 - 3:22:04 AM

Identifiers

  • HAL Id : tel-00717866, version 1

Collections

Citation

François Champeau. Paramétrisation des processus physico-chimiques de formation des nuages et étude de leurs impacts sur l'évolution de la composition chimique atmosphérique. Océan, Atmosphère. Université Blaise Pascal - Clermont-Ferrand II, 2007. Français. ⟨NNT : 2007CLF21748⟩. ⟨tel-00717866⟩

Share

Metrics

Record views

335

Files downloads

947