Johan Øvrevik,NIPH, Oslo, Norway. Presentation on ULTRHAS, and EC funded project on the health threats posed by nanoparticles from different transport sources and that was aimed to provide guidance for policy development to improve air quality and health

Meritxell Garcia-Marlès, EGAR – IDAEA-CSIC, Barcelona, Spain, Expert in source apportionment of ultrafine particles in air

Ulf Olofsson, KTH, Stockholm, Sweden, expert in on particle emission, focusing on friction, wear, and particle emissions from transport systems

Christoph Knote, Augsburg University, Germany, Expert in atmospheric modeling, air quality, and chemistry-climate interactions