Evaluation of Modeled Spatially and Temporarily Highly Resolved Emission Inventories of Photosmog Precursors for the City of Augsburg: The Experiment EVA and Its Major Results |
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| Authors: | F Slemr G Baumbach P Blank U Corsmeier F Fiedler R Friedrich M Habram N Kalthoff D Klemp J Kühlwein K Mannschreck M Möllmann-Coers K Nester H-J Panitz P Rabl J Slemr U Vogt B Wickert |
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| Institution: | (1) Fraunhofer-Institut für Atmosphärische Umweltforschung (IFU), Kreuzeckbahnstraß e 19, D-82467 Garmisch Partenkirchen, Germany;(2) Institut für Verfahrenstechnik und Dampfkesselwesen (IVD), Universität Stuttgart, Pfaffenwaldring 23, D-70550 Stuttgart, Germany;(3) Institut für Energiewirtschaft und Rationelle Energieanwendung (IER), Universität Stuttgart, Heß brühlstraß e 49a, D-70565 Stuttgart, Germany;(4) Institut für Meteorologie und Klimaforschung (IMK), Universität Karlsruhe/Forschungszentrum Karlsruhe, Postfach 3640, D-76021 Karlsruhe, Germany;(5) Institut für Chemie der Belasteten Atmosphäre (ICG-2), Forschungszentrum Jülich, Postfach 1913, D-52425 Jülich, Germany;(6) Abteilung Arbeitssicherheit und Strahlenschutz (ASS), Forschungszentrum Jülich, Postfach 1913, D-52425 Jülich, Germany;(7) Bayerisches Landesamt für Umweltschutz (LfU), Bürgermeister-Ulrich-Straß e 160, D-86179 Augsburg, Germany |
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| Abstract: | Emission inventories of NOx, CO, and individual volatile organic compounds (VOC), highly resolved in space and time, belong to the most important input parameters for chemistry and transport models (CTM) used for ozone prediction. Because of the decisive influence of the input quality on the outcome of CTM simulations, the quality of emission inventories has to be assessed. This paper presents an experimental evaluation of the highly resolved emission inventories for the city of Augsburg. The emissions of the city, determined in March and October 1998 using mass balance and tracer techniques, and derived from the measured receptor concentration ratios, were compared with emissions modeled from an emission inventory. The modeled CO emissions were in agreement with the measured ones within the combined experimental and model uncertainties. More detailed CO emission model simulations suggest that the tendency of calculated CO emissions being smaller than the measured ones may be due to higher traffic activity in Augsburg. Modeled NOx emissions were in agreement with the measured ones within the combined experimental and model uncertainties. Large deviations between modeled and measured values have been found for some individual NMHC compounds. The measured NMHC emission fingerprints were dominated by mobile sources. Substantial model predicted NMHC emissions from the solvent use could not be detected by measurements suggesting that they may not be correctly represented by the emission model. |
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| Keywords: | emission model inventory CO NOx NMHC measurement intercomparison |
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