title: Comparison of two peak-to-mean approaches for use in odour dispersion models.
abstract: In this paper, two approaches to estimate odour concentrations in dispersion models are compared. The approaches differ in the estimation of the momentary (peak) odour concentration for the time interval of a single human breath (approximately 5 s). The Austrian Odour Dispersion Model (AODM) is a Gaussian model with peak-to-mean factors depending on wind speed and atmospheric stability. The German Lagrange code AUSTAL2000 uses a constant factor 4 in all meteorological conditions to derive the maximum odour concentration over a short integration time. As the Lagrange model, in contrast to the Gauss model, can be applied also in complex topography and with isolated buildings, the implementation of the Austrian peak-to-mean approach in AUSTAL2000 would enable for more realistic separation distances in these environments. In a current scientific project, this implementation will be carried out, and a comparison of separation distances with AODM and AUSTAL2000 will be undertaken.
authors.affiliation: Department of Environmental Meteorology, Central Institute for Meteorology and Geodynamics, Hohe Warte 38, A 1190 Vienna, Austria. martin.piringer@zamg.ac.at
authors.forename: Martin
authors.initials: M
authors.lastname: Piringer
authors.forename: Günther
authors.initials: G
authors.lastname: Schauberger
authors.forename: Erwin
authors.initials: E
authors.lastname: Petz
authors.forename: Werner
authors.initials: W
authors.lastname: Knauder
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D008962:Models, Theoretical; D016011:Normal Distribution; D009812:Odorants