Title: Boundary-layer parameterization for Finnish regulatory dispersion models

Authors: A. Karppinen, S.M. Joffre, P. Vaajama

Addresses: Finnish Meteorological Institute, Air Quality Research, Sahaajankatu 20 E, FIN-00810 Helsinki, Finland. ' Finnish Meteorological Institute, Air Quality Research, Sahaajankatu 20 E, FIN-00810 Helsinki, Finland. ' Finnish Meteorological Institute, Air Quality Research, Sahaajankatu 20 E, FIN-00810 Helsinki, Finland

Abstract: This paper presents the boundary-layer parameterisation model which is applied as a meteorological pre-processor by Finnish regulatory dispersion models. The parameterisation scheme is based on the energy-flux method, which evaluates the turbulent heat and momentum fluxes in the boundary layer. We have compared the model predictions with those of the corresponding scheme of Berkowicz and Prahm, using the same synoptic input data. The comparison shows the basic physical differences between these two models. Some numerical results from these two pre-processors differ substantially, while the results for net radiation are statistically nearly identical.

Keywords: boundary layer parameterisation; energy flux; meteorological pre-processors; atmospheric dispersion models; Finland; air pollution; environmental pollution; modelling; turbulent heat flux; turbulent momentum fluxes.

DOI: 10.1504/IJEP.1997.028206

International Journal of Environment and Pollution, 1997 Vol.8 No.3/4/5/6, pp.557 - 564

Published online: 15 Sep 2009 *

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