the attenuation curves reach the value of 1 at shorter distances thanat Kittsee, leading to equal or even lower separation distances thanwhen using the Robins' (1979) approach. LASAT generally calculateslarger separation distances than AODM, at all sites. The differencesare, however, in an acceptable range. Using the factor 4 of theGerman TA-Luft (2002) over all distances and stabilities results inextremely large separation distances, especially in valleys and basins,when weak winds and stable conditions are frequent andcoincident.
5. Conclusions
In this paper, direction-dependent separation distances to protectthe neighbourhood from odour nuisance have been calculatedwith two models, the Gaussian Austrian Odour Dispersion ModelAODMand the Lagrange particle diffusion model LASAT. Short-termpeak odour concentrations have been calculated either with thestability-dependent peak-to-mean algorithm developed withAODM (Piringer et al., 2014) or with the factor 4 e approach usedwith LASAT in Germany (TA-Luft, 2002). The same emission(Table 4) and meteorological data have been used, but atmosphericstability is determined differently from these data (Section 2.2).Differences in the resulting separation distances are then both dueto the different peak-to-mean concepts and to the different atmospheric