Objetivo Problems to be solvedThe proposed research programme is designed to resolve many of the outstanding key issues concerning the chemical transformation of DMS so that a reliable quantitative appraisal can be made of its contribution to CCN formation and consequently an assessment of the magnitude of its regulatory role in climate. Past work on the atmospheric chemistry has been instrumental in highlighting very specific processes, which need to be investigated in detail if a reliable assessment of the relationship between DMS, CCN and climate is to be made. The continuing improvement in analytical techniques now makes it possible to make high quality and high time resolution measurements of many species, both in the laboratory and in the field, which were previously either not possible or only with large error limits and poor time resolution.Scientific objectives and approachThe major objectives of the project are1) to put constrains on the large uncertainties associated with current photochemical models by providing more accurate gas-phase kinetic and photochemical data on DMS oxidation chemistry.2) Investigate particle formation from both DMS and DMSO.3) Simultaneous high-time resolution measurements of dimethyl sulphide, oxidation products, halogen oxides, NO3 radical, and aerosol number/size distribution in 3 campaigns at sites with different geographical locations reflecting distinct aspects of DMS chemistry.4) Use the data to determine the relative importance of the oxidants OH, NO3 and halogen oxides under different atmospheric conditions.5) Use the laboratory data to construct a DMS chemistry module for CT-models capable of describing both the remote and polluted marine atmosphere and test of the models against the field data. The objectives will be achieved by a closely co-ordinated amalgamation of laboratory, field and modelling investigations.Expected impactsThe main deliverables of the project will initially be progressive constraints on kinetic/ mechanistic aspects of the oxidation chemistry of DMS and DMSO from laboratory and field experiments. This will be accompanied by high-time resolution field measurements of DMS, oxidation products, aerosols and other products relevant to the photochemistry. Based on this laboratory and field information a comprehensive gas/aerosol DMS-halogen-chemistry mechanism (g/a-DMS-HALO) module for incorporation in CT-models will be developed, which will be capable of describing DMS chemistry in both the remote and polluted marine atmosphere. The information can eventually be incorporated into global climatic models. Ámbito científico natural scienceschemical scienceselectrochemistryelectrolysisnatural scienceschemical sciencesphysical chemistryphotochemistrynatural scienceschemical sciencesinorganic chemistryhalogens Programa(s) FP5-EESD - Programme for research, technological development and demonstration on "Energy, environment and sustainable development, 1998-2002" Tema(s) 1.1.4.-2. - Key action Global Change, Climate and Biodiversity Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador BERGISCHE UNIVERSITAET GESAMTHOCHSCHULE WUPPERTAL Aportación de la UE Sin datos Dirección Gauss-Straße 20 42097 WUPPERTAL Alemania Ver en el mapa Coste total Sin datos Participantes (10) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Francia Aportación de la UE Sin datos Dirección Avenue de la Terrasse, BFtiment 12 91198 GIF SUR YVETTE Ver en el mapa Coste total Sin datos CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Francia Aportación de la UE Sin datos Dirección Avenue de la Recherche Scientifique 1 C 45071 ORLEANS Ver en el mapa Coste total Sin datos COMMISSION OF THE EUROPEAN COMMUNITIES Italia Aportación de la UE Sin datos Dirección Via Enrico Fermi TP 290 21020 ISPRA Ver en el mapa Coste total Sin datos DANISH METEOROLOGICAL INSTITUTE Dinamarca Aportación de la UE Sin datos Dirección 100,Lyngbyvej 100 2100 KOEPENHAGEN Ver en el mapa Coste total Sin datos FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. Alemania Aportación de la UE Sin datos Dirección Nikolai-Fuchs-Strasse 1 30625 HANNOVER Ver en el mapa Enlaces Sitio web Opens in new window Coste total Sin datos FUNDACION CENTRO DE ESTUDIOS AMBIENTALES DEL MEDITERRANEO España Aportación de la UE Sin datos Dirección C/ Charles R. Darwin 14 - Parque Tecnológico - Se 46980 CAMPAMENTO/PATERNA Ver en el mapa Coste total Sin datos NORWEGIAN INSTITUTE FOR AIR RESEARCH Noruega Aportación de la UE Sin datos Dirección Instituttveien 18 2027 KJELLER Ver en el mapa Coste total Sin datos RUPRECHT-KARLS-UNIVERSITAET HEIDELBERG Alemania Aportación de la UE Sin datos Dirección Im Neuenheimer Feld 229 69117 HEIDELBERG Ver en el mapa Coste total Sin datos UNIVERSIDAD DE CASTILLA-LA MANCHA España Aportación de la UE Sin datos Dirección Campus Universitario SN 13071 CIUDAD REAL Ver en el mapa Coste total Sin datos UNIVERSITY OF CRETE Grecia Aportación de la UE Sin datos Dirección Knossos Avenue 71409 IRAKLION Ver en el mapa Coste total Sin datos