Comparisons of dispersion calculations between TA Luft and a method based on a more complex model combination (FITNAH/LPDM)
by E. Dittmann, U. Pfluger, R. Thehos, M. Baltrusch, M. Buchen
International Journal of Environment and Pollution (IJEP), Vol. 5, No. 4/5/6, 1995

Abstract: Dispersion calculations for regulatory purposes in Germany have been based on a Gaussian-type model for more than 20 years. Within this procedure nearly 88 000 hourly consecutive meteorological situations are evaluated statistically and put into 1944 classes. For each of these classes surface concentrations are calculated and combined to a one-year mean surface concentration field. Another procedure, consisting of the combination of a non-hydrostatic model for the wind field and a Lagrangian dispersion model, is used for 150 different meteorological input datasets. These datasets represent classes of meteorological situations, which are compiled from about 8000 consecutive twice-daily situations by cluster analysis. The two different methods have been applied to a source in the Rhine river valley. The results show differences, in both the value and the location, of the maximum of the mean surface concentration; the difference in location seems to be more significant than that in the maximum value.

Online publication date: Thu, 17-Sep-2009

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Environment and Pollution (IJEP):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com