Objectif Climate change is currently one of the central scientific issues in the world, and the ability to reliably forecast climate is crucial for making political decisions that affect the lives of billions of people. Aerosols remain the dominant uncertainty in predicting radiative forcing and future climate change, and also have adverse effects on human health and visibility. One of the least-well understood aerosol-related processes is nucleation: the formation of new particles from condensable vapours. While nucleation is related primarily to neutral clusters, state-of-the-art experimental methods measure only charged clusters.The main scientific objectives of this project are 1) to understand the chemical composition of charged and especially neutral atmospheric clusters from molecular to multi-nanometre scale, and explain the mechanism by which they nucleate, and 2) to direct current intense instrument development and provide theoretical tools to maximize the information on neutral clusters that can be obtained from experimental results on charged clusters.Our scientific plan consists of a multilevel computational effort to provide formation rates and properties of atmospheric clusters and particles to aerosol dynamic and climate modellers. To capture the properties of the smallest clusters, we need to perform quantum chemical calculations, combined with simulations on cluster formation kinetics. Unfortunately, these methods are computationally far too demanding to describe the entire nucleation process. Thus, we will feed quantum chemical results to classical thermodynamic models, the results of which in turn must be parameterized for efficient use in larger-scale models. Champ scientifique natural sciencesphysical sciencesthermodynamicsnatural sciencesearth and related environmental sciencesatmospheric sciencesclimatologyclimatic changes Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-SG-ID1 - ERC Starting Grant Interdisciplinary Panel Appel à propositions ERC-2010-StG_20091028 Voir d’autres projets de cet appel Régime de financement ERC-SG - ERC Starting Grant Institution d’accueil HELSINGIN YLIOPISTO Contribution de l’UE € 1 476 418,00 Adresse YLIOPISTONKATU 3 00014 Helsingin Yliopisto Finlande Voir sur la carte Région Manner-Suomi Helsinki-Uusimaa Helsinki-Uusimaa Type d’activité Higher or Secondary Education Establishments Contact administratif Satu Väisänen (Ms.) Chercheur principal Hanna Vehkamäki (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire HELSINGIN YLIOPISTO Finlande Contribution de l’UE € 1 476 418,00 Adresse YLIOPISTONKATU 3 00014 Helsingin Yliopisto Voir sur la carte Région Manner-Suomi Helsinki-Uusimaa Helsinki-Uusimaa Type d’activité Higher or Secondary Education Establishments Contact administratif Satu Väisänen (Ms.) Chercheur principal Hanna Vehkamäki (Prof.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée
