NDLI: Modeling of Diffusion in a Wide Alpine Valley

Content Provider	Springer Nature Link
Author	Prabha, T. V. Mursch Radlgruber, E.
Copyright Year	1999
Abstract	A K-type diffusion model coupled with a massconsistent wind model is applied for one of the rural biological waste disposal sites in Austrian Alps. The site is situated in the Pöls valley in the eastern Alps, 250 km south-west of Vienna in Austria Aim of the study is to demonstrate dispersion of H2S from the site to near by village. Model simulations are carried out each for an evening and a morning transition case characterized by flow reversals. The role of locally generated wind in changing the pollutant distribution over nearby residential area is investigated. Surface observations at two stations toward the open boundaries of the main valley are used to derive the turbulence parameters and then to obtain initial inputs of wind profiles. The turbulence parameters behave analogous to that over a plane terrain after the establishment of the valley wind. The model simulations are done for eight hours during the evening transition and eighteen hours for the morning transition by incorporating the wind field from a mass consistent wind model. The results are compared with SF6 tracer experiments conducted during those periods. The model outputs and the observations at various points inside the valley are in good correlation except for NW part of the valley after the reversal of valley wind. The results also reveal the potential of a simple approach with minimized inputs.
Starting Page	93
Ending Page	103
Page Count	11
File Format	PDF
ISSN	0177798X
Journal	Theoretical and Applied Climatology
Volume Number	64
Issue Number	1-2
e-ISSN	14344483
Language	English
Publisher	Springer-Verlag
Publisher Date	1999-10-28
Publisher Place	Wien
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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