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Photochimie et Aérosol en Région Alpine : Mélange et Transport

Abstract : The Alpine arc deeply interacts with general circulation of atmosphere. By studying configurations in summer and winter over various Alpine areas, this work explains how mixing and transport of airborne pollutants happen, both gaseous and particulate matter, from their emission sources to free troposphere. Using observational results and a comprehensive eulerian modelling system, one focuses on mechanisms of pollution by ozone in summer and by particulate matter and benzene in winter. After having validated the modelling system using datasets from field experiments POVA, GRENOPHOT and ESCOMPTE, it is applied on two periods with principal interest in the Grenoble area: one is the heatwave August 2003 and the other is a long episode of thermal inversion in February 2005. Uncertainties are also calculated. One finishes by applying the modelling chain to understand how a stratospheric intrusion following a tropopause fold affected the Alpine region in July 2004.
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https://tel.archives-ouvertes.fr/tel-00116356
Contributor : Eric Chaxel <>
Submitted on : Sunday, November 26, 2006 - 6:40:27 PM
Last modification on : Thursday, November 19, 2020 - 3:54:09 PM
Long-term archiving on: : Tuesday, April 6, 2010 - 8:03:33 PM

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  • HAL Id : tel-00116356, version 1

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Eric Chaxel. Photochimie et Aérosol en Région Alpine : Mélange et Transport. Océan, Atmosphère. Université Joseph-Fourier - Grenoble I, 2006. Français. ⟨tel-00116356⟩

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