Obiettivo To expand the intensive co-ordinated ground-based observations to provide climatological measurements of ozone total amounts and vertical profiles, aerosol vertical distributions, ClO vertical profiles, NO2, NO, reservoirs and long-lived tracers total amounts; - to study the coherence of the ozone vertical profiles database recorded since the mid-eighties. The problem of the possible meteorological bias in the ozone profile retrieved from lidars in the low stratosphere will be addressed; - to identify the processes which drive the variability of ozone over the Alps in the low and middle stratosphere by coupling the ozone vertical profiles obtained at different sites and using dynamical tracers (trajectories, potential temperatures and vorticies); - to study the nitrogen and chlorine budgets with ground-based and satellite measurements to test and validate the stratospheric models; - to assess the impact of heterogeneous chemistry processes on the partitioning of stratospheric species by using ground-based and satellite data combined with 2-D and 3-D modelling studies; - to compare the time series of stratospheric species now available from the Alpine stations with long-term simulation over the last decade; - to contribute to stratospheric studies on the connections of mid-latitude changes with high and low latitudes; - to validate satellite measurements of stratospheric species performed by GOME and possibly ADEOS; - to finalise intercomparisons for aerosol and ClO retrieval methods.This project methodology is based on the integrated use of reliable time series of ground-based observations over periods starting in the mid eighties or since the early nineties and on validated satellite observations covering the same time period (e.g. SAGE II) or shorter period (e.g. UARS). These data sets will be combined with new multi-dimensional modelling developments to study the chemical-dynamical-radiative coupled processes of the mid-latitude stratosphere, with the emphasis on the heterogeneous processes. The ground-based observations of stratospheric species are performed at the northern mid-latitude NDSC Alpine stations, namely the Observatoire de Haute Provence, the Plateau de Bure and the International Scientific Station at the Jungfraujoch and complementary stations located in the Alps with lidar, UV-visible, FTIR and microwave instruments. Measurements of NO2 vertical profiles would be used first together with ClONO2 vertical profiles. These two species are measured respectively by SAGE II and by UARS. UARS will also provide valuable measurements on the vertical distribution of relevant reservoirs (HNO3, HCl) as well as additional vertical profiles of ozone, ClO, aerosols and water vapour which will be used for further geophysical studies. The modelling studies will be performed using a 2-D chemical-dynamical-radiative model including a microphysical model describing the formation of sulphuric acid aerosols and polar stratospheric clouds, as well as the heterogeneous chemical reactions occurring at the surface of both aerosols and polar stratospheric clouds. A 3-D transport model, including gas phase as well as heterogeneous chemistry, and accounting for the formation of polar stratospheric clouds will be used to study the behaviour of ozone and other chemical species in the lower stratosphere, and to evaluate the impact of the dilution of ozone-depleted high-latitude air on the evolution of mid-latitude ozone. Campo scientifico natural sciencesearth and related environmental sciencesatmospheric sciencesnatural sciencescomputer and information sciencesdatabasesengineering and technologymechanical engineeringvehicle engineeringaerospace engineeringsatellite technologynatural scienceschemical sciencesinorganic chemistryhalogens Programma(i) FP4-ENV 2C - Specific programme of research and technological development in the field of environment and climate, 1994-1998 Argomento(i) 01020101 - Stratospheric chemistry and depletion of the ozone layer Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore BELGIAN INSTITUTE FOR SPACE AERONOMY Contributo UE Nessun dato Indirizzo 3,Ringlaan 3 1180 BRUXELLES Belgio Mostra sulla mappa Costo totale Nessun dato Partecipanti (8) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Francia Contributo UE Nessun dato Indirizzo Route des Gètines 92371 VERRIERES-LE-BUISSON Mostra sulla mappa Costo totale Nessun dato Centre National de la Recherche Scientifique (CNRS) Francia Contributo UE Nessun dato Indirizzo Université de Bordeaux 33270 Floirac Mostra sulla mappa Costo totale Nessun dato FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. Germania Contributo UE Nessun dato Indirizzo Kreuzeckbahnstrasse 19 82467 GARMISCH-PARTENKIRCHEN Mostra sulla mappa Costo totale Nessun dato NORWEGIAN INSTITUTE FOR AIR RESEARCH Norvegia Contributo UE Nessun dato Indirizzo Instituttveien 18 2027 KJELLER Mostra sulla mappa Costo totale Nessun dato UNIVERSITE DE LIEGE Belgio Contributo UE Nessun dato Indirizzo 5,Allee du 6 Aout, Bat. B5c 4000 LIEGE Mostra sulla mappa Costo totale Nessun dato UNIVERSITY OF BERNE Svizzera Contributo UE Nessun dato Indirizzo 5,Sidlerstrasse 5 3012 BERN Mostra sulla mappa Costo totale Nessun dato UNIVERSITY OF SCIENCE AND TECHNOLOGY OF LILLE Francia Contributo UE Nessun dato Indirizzo Bètiment P5 59655 VILLENEUVE D'ASCQ Mostra sulla mappa Costo totale Nessun dato UNIVERSITÀ DEGLI STUDI - L'AQUILA Italia Contributo UE Nessun dato Indirizzo Via Vetoio 10, Coppito 67010 ASSERGI Mostra sulla mappa Costo totale Nessun dato
