perception, determined by field measurements, and thepercentage of “annoyed” and “seriously annoyed” people (annoyancethermometer scale from 7 to 10) was investigated by Suckeret al. (2008b). It is obvious that a hedonic tone has an abundantlyclear effect on the doseeresponse relationship between odourfrequency and annoyance. Pleasant odours have a significantlylower annoyance potential than unpleasant/neutral odours (Suckeret al., 2008a). It has to be mentioned that the verification ofdispersion model calculations by such field measurements islimited to those odour impact criteria with an exceedance probabilityof at least 10% to reduce the uncertainty of the sampling bypanelists.
The calculation of attenuation curves and separation distancespresented here for Kittsee has been carried out for four other sitesacross Austria where at least a one year data set of ultrasonicanemometer data was available. Two of these sites are situated inan Alpine valley and a South-Alpine basin, respectively, the othertwo outside the Alps, but in more undulating terrain than Kittsee.When attenuation curves are determined from the ultrasonicanemometer measurements at these sites, large site-to-site differencesof attenuation curves are obtained. In general, at the lesswindy sites where the s/u ratios are often higher than in Kittsee, aLASAT (Fig. 5)