Validation of urban emission inventories

• Published in: Environmental monitoring and assessment Vol. 65; no. 1-2; pp. 31 - 39
• Main Author: MENSINK, Clemens
• Format: Conference Proceeding Journal Article
• Language: English
• Published: Dordrect Springer 01.11.2000; Springer Nature B.V
• Subjects: Accuracy; Applied sciences; Atmospheric pollution; Dispersion; Driving; Emission; Emission inventories; Emission measurements; Emissions; Environment; Environmental monitoring; Exact sciences and technology; Flow rates; Fluxes; Height; Maintenance; Mathematical models; Mixing; Monitoring; Pollutants; Pollution; Pollution sources. Measurement results; Precision; Stockpiling; Traffic engineering; Traffic flow; Vehicle emissions; Vehicles; Width; Validation; Quality assurance; Methodology; Emission content; Pollution source inventory; Air pollution; Air quality; Urban area; Pollutant emission
• ISSN: 0167-6369; 1573-2959
• DOI: 10.1023/A:1006410713915

Two emission validation methods are presented. The first method focuses on the precision of the emission factors and the accuracy of modelled traffic flows. Emission factors derived from the COPERT II methodology are compared with on-board emission measurements and modelled traffic flow rates are compared with observations. The second validation method focuses on the completeness of the inventory, i.e. coverage of all sources. The method compares measured pollutant fluxes in the urban plume with the downwind transported and dispersed emissions integrated over plume width and mixing height. Both methods seem to indicate that traffic emission factors used in the urban emission inventories show large uncertainties. Besides the lack of measurement precision this is mainly induced by external influence factors like driving behaviour and vehicle maintenance.