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Status and trends of NO2 ambient concentrations in Europe
ETC/ACC Technical Paper 2010/19

Released: 2011/11/16: See the report

Abstract
Despite of the reduction of total NOx emissions in Europe, the trend in ambient air concentrations of NO2 lags clearly behind the decreasing trend in the NOx emissions. The present decrease in NO2 concentrations is far from ensuring compliance with the NO2 limit values (LV), set in the Directive 2008/50/EC, in many European agglomerations and zones in the next few years. Exceedances of the annual NO2 limit value (40 μg/m3) were observed in nearly all countries at one or more stations in 2008. Further, compliance with this LV is expected for only a few of the cities which have been affected by exceedances in the last years, despite adopted measures both at local and at EU level. In this report the analysis of the current NO2 and NOx ambient concentrations and trends across Europe, as well as of the NO2/NOx concentration ratio, is presented and discussed.

Prepared by: ETC/ACC members Cristina Guerreiro, Claudia Hak (NILU), Jan Horálek, Pavel Kurfürst, Jana Ostatnická (CHMI), Frank de Leeuw (PBL), Christian Nagl (UBA-V)

Published by: ETC/ACM (follow-up of ETC/ACC), November 2011, 69 pp.