Greenhouse gases may decrease stratospheric temperatures, causing widespread formation of polar stratospheric clouds (spec) a key process for ozone depletion in a future climate. The objective is to obtain a detailed knowledge of the pathways to formation of spec. The investigations combine three activities: field measurements large-scale laboratory simulations and microphysical modelling balloon-borne experiments provide measurements of condensed phase chemical composition of psc particles together with size distributions, phase and optical properties. simulation of psc particles is performed over a wide temperature and gas phase range within a large cry-chamber. analyses of the experimental results are made using microphysical optical and meteorological musicale models.
Funding SchemeCSC - Cost-sharing contracts