title: Estimation of trends in urban traffic NOx emissions by an empirical model
abstract: A model has been developed to estimate trends in urban traffic NOx emissions by measured NO2 concentrations.
authors.affiliation: Swedish Environmental Research Institute (IVL), Goteborg, Sweden. karin.persson@ivl.se
authors.initials: K
authors.lastname: Persson
authors.initials: G
authors.lastname: Omstedt
authors.initials: M
authors.lastname: Lenner
authors.initials: A
authors.lastname: Sjodin
authors.initials: PA
authors.lastname: Svanberg