title: Concluding remarks: Faraday Discussion on chemistry in the urban atmosphere.
abstract: This article summarises the Concluding remarks from the Faraday Discussion on Chemistry in the Urban Atmosphere. The following themes are addressed: (a) new results that inform our understanding of the evolving sources and composition of the urban atmosphere ("News"); (b) results that identify gaps in our understanding that necessitate further work ("Gaps");
authors.affiliation: Dept. of Chemistry and Biochemistry, and Cooperative Institute for Research in the Environmental Sciences, University of Colorado, Boulder, CO 80309, USA. jose.jimenez@colorado.edu.
authors.forename: Jose L
authors.initials: JL
authors.lastname: Jimenez
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002947:Cities; D008401:Gas Chromatography-Mass Spectrometry; D013058:Mass Spectrometry; D009589:Nitrogen Oxides / Q000032:analysis / Q000737:chemistry; D010126:Ozone / Q000032:analysis; D052638:Particulate Matter / Q000032:analysis; D001335:Vehicle Emissions / Q000032:analysis; D055549:Volatile Organic Compounds / Q000737:chemistry
chemical_list: D000393:Air Pollutants; D009589:Nitrogen Oxides; D052638:Particulate Matter; D001335:Vehicle Emissions; D055549:Volatile Organic Compounds; D010126:Ozone