Obiettivo The proposed research aims in the first place at quantifying the hierarchy of UV-B modulating factors moving from startospheric ozone to tropospheric ozone and other environmental factors such as aerosol, clouds and air quality. This project builds on recent results from EU campaigns which have shown that southeastern Europe and particularly the Aegean sea, is experiencing enhanced background ozone up to the tropopause, with extreme gradients in the J(O1D) prevailing in the first 2 km above sea level in the region. Therefore the project in addition to quantifying with model results validated by calibrated observations the factors influencing UV transfer, it will next move on to unravel the mechanisms maintaining the high background ozone over Southeastern Europe and its interplay with UV transfer. 3-D model studies will be done in large regional and subregional scales to understand the extend of enhanced background ozone and its sources. The tropospheric effect on UV transfer is not as large as the absorption in the stratosphere but can be important due to photon path enhancements in the presence of different types of aerosols. This synergistic effect of the aerosol burden will be separately studied, being at present an open question. The above objectives of the project will be achieved through extensive state-of-the-art campaign measurements and modelling studies. The sites selected (islands of Crete and Lampedousa)are both in central and eastern Mediterranean and provide unique environments to meet the objectives presented before. They are located in the sunniest part of Europe and are exposed to high background levels and to alternating types of aerosols (Sahara/maritime) for which the quantification of combined effects are targeted in the study. The campaign and modelling efforts include studies on the variability of aerosol in the region. The project is focusing mainly in two major objectives: (a) Quantification of UV modulating factors and validation of UV models with calibrated data sets from an extensive campaign in the Mediterranean and (b) Modelling and validation studies on the mechanisms maintaining the enhanced tropospheric ozone in the region of study and quantification of interrelationships with the UV radiation field. Campo scientifico natural sciencesearth and related environmental sciencesatmospheric sciencesengineering and technologyenvironmental engineeringair pollution engineering 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 ARISTOTLE UNIVERSITY OF THESSALONIKI Contributo UE Nessun dato Indirizzo Aristotle University of Thessaloniki 54006 THESSALONKI Grecia Mostra sulla mappa Costo totale Nessun dato Partecipanti (11) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto BELGIAN INSTITUTE FOR SPACE AERONOMY Belgio Contributo UE Nessun dato Indirizzo 3,Ringlaan 3 1180 BRUXELLES Mostra sulla mappa Costo totale Nessun dato 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 DEMOCRITUS UNIVERSITY OF THRACE Grecia Contributo UE Nessun dato Indirizzo Vas Sofias 1 67100 XANTHI Mostra sulla mappa Costo totale Nessun dato Ente per le Nuove Tecnologie l'Energia e l'Ambiente (ENEA) Italia Contributo UE Nessun dato Indirizzo Via Anguillarese 301 00060 Santa Maria di Galeria Roma Mostra sulla mappa Costo totale Nessun dato Ludwig-Maximilians-Universität München Germania Contributo UE Nessun dato Indirizzo Hohenbachernstraße 22 85354 Freising Mostra sulla mappa Costo totale Nessun dato METEOROLOGIE CONSULT GMBH Germania Contributo UE Nessun dato Indirizzo Auf der Platt 47 61479 GLASHUETTEN Mostra sulla mappa Costo totale Nessun dato NATIONAL RESEARCH COUNCIL OF ITALY Italia Contributo UE Nessun dato Indirizzo Via Fosso del Cavaliere 100 00133 ROMA Mostra sulla mappa Costo totale Nessun dato SWISS FEDERAL INSTITUTE OF TECHNOLOGY LAUSANNE Svizzera Contributo UE Nessun dato Indirizzo ENAC-LPAS 1015 LAUSANNE Mostra sulla mappa Costo totale Nessun dato UNIVERSITY OF OSLO Norvegia Contributo UE Nessun dato Indirizzo Moltke Moes Vei 31 0315 OSLO Mostra sulla mappa Costo totale Nessun dato UNIVERSITY OF THE AEGEAN Grecia Contributo UE Nessun dato Indirizzo 17,Karantoni 17 81100 MYTILINI Mostra sulla mappa Costo totale Nessun dato Università degli Studi di Roma La Sapienza Italia Contributo UE Nessun dato Indirizzo Piazzale Aldo Moro 2/5 00185 Roma Mostra sulla mappa Costo totale Nessun dato