Articles | Volume 21, issue 5
Research article
17 Mar 2021
Research article |  | 17 Mar 2021

A comparison of long-term trends in observations and emission inventories of NOx

Elena Macdonald, Noelia Otero, and Tim Butler

Data sets

Download of air quality data – E1a and E2a data European Environment Agency (EEA)

Gridded NOx data EMEP Centre on Emission Inventories and Projections

Model code and software

Code for A Comparison of Long-term Trends in Observations and Emission Inventories of NOx E. Macdonald

Short summary
NO2 limit values are still regularly exceeded in many European cities despite decreasing emissions. Measurements of NOx concentrations from stations across Europe were systematically analysed to assess long-term changes observed in urban areas. We compared trends in concentration increments to trends in total and traffic emissions to find potential discrepancies. The results can help in evaluating inaccuracies in emission inventories and in improving spatial imbalances in data availability.
Final-revised paper