Author(s)

Didier Voisin, Michel Legrand and Andrea Flossmann

Abstract

Field Investigations of the Scavenging of Acidic Gases (HCOOH, CHbCOOH, HNOa, HC1, and SO:) in Mixed Liquid-solid Water Clouds at the Puy de Dome in France. A contribution to subproject PROCLOUD. Didier Voisin\ Michel Legrand* and Andrea Flossmann^ *CNRS, L.G.G.E., BP 96, 38402, Saint Martin d'Heres, France ^ Universite Blaise Pascal, CNRS, La.M.P., 24 Avenue des Landais, 63177, Aubieres, France Introduction In cold clouds, gases are not only incorporated in water but also in ice. The presence of these two condensed water phases greatly modify the composition of the interstitial gas phase. Quantifying the mechanisms responsible for this incorporation is needed to model the role of mixed clouds on tropospheric chemistry and to interpret in detail chemical records from ice cores coming from polar ice caps or high altitude glaciers. For that purpose, both physics and chemistry of the di

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