Validation of Gaussian plume model Aeropol against Cabauw field experiment Online publication date: Tue, 23-Jan-2018
by Marko Kaasik; Gertie Geertsema; Rinus Scheele
International Journal of Environment and Pollution (IJEP), Vol. 62, No. 2/3/4, 2017
Abstract: The Gaussian dispersion model AEROPOL is validated against the Cabauw (1977-1978) dataset, applying the parameters and rules from the Model Validation Kit. The purpose to revisit this experiment is preparation for fast response to buoyant accidental releases. In the AEROPOL model, the classical Pasquill-Gifford stability and a scheme based on Lagrangian time scales (the Gryning scheme) are used as alternatives. Validation is based on correlation, fractional bias, fractional sigma, NMSE and fraction in factor 2, applying these statistics to maximal arc-wise, near-centreline and cross-wind integrated concentrations. Both parameterisations are found to be fairly adequate. The Gryning scheme results in moderately underestimated concentrations, which are well correlated with the experimental ones. The Pasquill parameterisation, in contrast, represents the concentrations well on average, but with larger scatter. The average wind direction and speed between the lowest measurement level and release level are found to be good approximations to represent the position of the Gaussian plume.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
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:
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