<p>Part I: Gaseous and Particulate Pollutants and Their Sources</p><p> </p><p>Critical Areas for Compliance with PM<sub>10</sub> and NO<sub>2</sub> Limit Values in Europe</p><p>C. Nagl, C. Ansorge, L. Moosmann, W. Spangl, H. Wiesenberger</p><p> </p><p>The Evolution and Control of NOx Emissions from Road Transport in Europe</p><p>P. G. Boultera, J. Borken-Kleefeldb, L. Ntziachristos</p><p> </p><p>Air Pollution by Ozone Across Europe</p><p>Richard G Derwent and Anne G Hjellbrekke</p><p> </p><p>Persistent Organic Pollutants in the European Atmosphere</p><p>Barend L. van Drooge and Joan O. Grimalt</p><p> </p><p>Wildfires as a Source of Aerosol Particles Transported to the Northern European Regions</p><p>Sanna Saarikoski and Risto Hillamo</p><p> </p><p>Residential Wood Burning: a Major Source of Fine Particulate Matter in Alpine Valleys in Central Europe</p><p>Christoph Hueglin</p><p> </p><p>Ammonia Emissions in Europe</p><p>Carsten Ambelas Skjøth and Ole Hertel</p> </p><p>Road Traffic: a Major Source of Particulate Matter in Europe</p><p>Fulvio Amatoa, Martijn Schaapa, Cristina Recheb and Xavier Querol</p><p> </p><p>Source Apportionment of Airborne Dust in Germany: Methods and Results </p><p>U. Quass, A.C. John, T.A.J. Kuhlbusch</p><p> </p><p>Air Quality in Urban Environments in the Eastern Mediterranean</p><p>A.Karanasiou and N. Mihalopoulos</p><p> </p><p>Anthropogenic and Natural Constituents in PM<sub>10</sub> at Urban and Rural Sites in North-Western Europe: Concentrations, Chemical Composition and Sources </p><p>Ernie Weijers and Martijn Schaap</p><p> </p><p>Particulate Matter and Exposure Modelling in Europe </p><p>A.I. Miranda; J. Valente; J. Ferreira; C. Borrego</p><p> </p><p> </p><p>Part II: Future Air Quality Monitoring Strategies and Research Directions</p><p> </p><p>Air Pollution Monitoring Strategies and Technologies for Urban Areas</p><p>Thomas A.J. Kuhlbusch, Ulrich Quass, Gary Fuller, Mar Viana, Klea Katsouyanni, Paul Quincey</p> </p><p>Number Size Distributions of Submicron Particles in Europe </p><p>Ari Asmi</p><p> </p><p>Indoor-Outdoor Relationships of Particle Number and Mass in European Cities</p><p>Gerard Hoek, Otto Hänninen, Josef Cyrys</p><p> </p><p>Nanoparticles in European Cities and Associated Health Impacts</p><p>Prashant Kumara, Lidia Morawsk and Roy M. Harrison</p>