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Nordmann, Stephan

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Nordmann
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Stephan
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  • Veröffentlichung
    Improvement of the predictive quality of CAMS forecasts for ozone and PM10 in comparison with measured values
    (2019) Neunhäuserer, Lina; Diegmann, Volker; Breitenbach, Yvonne; Nordmann, Stephan
    The Copernicus Atmosphere Monitoring Service (CAMS) provides, inter alia, daily forecasts for the next 96 hours in hourly resolution for various pollutants. These forecasts are based on the results of chemical transport models and their ensemble. Due to their horizontal grid resolution, the CAMS ensemble usually provides too low maximum ozone concentrations in comparison with measurements at background stations. This has a negative impact on the correct prediction of threshold value exceedances at very high ozone concentrations. The project presented here explored to what extent the predictive quality of CAMS ozone forecasts for Germany can be improved by post-processing with different correction techniques, particularly with regard to the detection of limit value exceedances. In addition, interpolation of the correction factors derived at measurement locations onto the CAMS grid and subsequent correction of the CAMS forecasts are discussed. A corresponding study was carried out for CAMS PM10 forecasts. © 2019 Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, HARMO. All rights reserved.
  • Veröffentlichung
    Luftqualität 2017
    (2018) Dauert, Ute; Feigenspan, Stefan; Himpel, Thomas; Kessinger, Susan; Minkos, Andrea; Nordmann, Stephan
    Diese Auswertung der Luftqualität im Jahr 2017 in Deutschland basiert auf vorläufigen, noch nicht abschließend geprüften Daten aus den Luftmessnetzen der Bundesländer und des Umweltbundesamtes, Stand 23.01.2018. Aufgrund der umfangreichen Qualitätssicherung in den Messnetzen stehen die endgültigen Daten erst Mitte 2018 zur Verfügung. Die jetzt vorliegenden Daten lassen aber eine generelle Einschätzung des vergangenen Jahres zu. Betrachtet werden die Schadstoffe Feinstaub (PM10 und PM2,5), Stickstoffdioxid (NO2) sowie Ozon (O3), da bei diesen nach wie vor Überschreitungen der geltenden Grenz- und Zielwerte zum Schutz der menschlichen Gesundheit auftreten. Quelle: https://www.umweltbundesamt.de
  • Veröffentlichung
    Air quality 2017
    (2018) Dauert, Ute; Feigenspan, Stefan; Himpel, Thomas; Kessinger, Susan; Minkos, Andrea; Nordmann, Stephan
    This evaluation of air quality in Germany in the year 2017 is based on preliminary data which has not yet been conclusively audited from the air monitoring networks of the federal states and the UBA, valid on 23rd January 2018. Due to the comprehensive quality assurance within the monitoring networks, the final data will only be available in mid-2018. The currently available data allows for a general assessment of the past year. The following pollutants were subject to consideration: particulate matter (PM10 and PM2.5), nitrogen dioxide (NO2) and ozone (O3), since, the limit and target values for the protection of human health are still exceeded for such substances. Quelle: https://www.umweltbundesamt.de