Degrazia, G.A. and Moreira, D.M. and Campos, C.R.J. and Carvalho, J.C. and Vilhena, M.T. (2002) Comparison between an integral and algebraic formulation for the eddy diffusivity using the Copenhagen experimental dataset. Il nuovo cimento C, 25 (2). pp. 207-218. ISSN 1826-9885
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Abstract
In this work an algebraic formulation to evaluate the eddy diffusivities in the Convective Boundary Layer (CBL) is derived. The expression depends on the turbulence properties (z height dependence) and the distance from the source. It is based on the turbulent kinetic energy spectra and Taylor’s statistical diffusion theory. It has been tested and compared through an experimental dataset, with another complex integral formulation taken from the literature. The Agreement between the complex integral formulation and simple algebraic expression points out that this new parameterization is valid and can be used as a surrogate for eddy diffusivities in the inhomogeneous convective turbulence present in the CBL. The validation shows that the proposed algebraic vertical eddy diffusivity is suitable for application in advanced air quality regulatory models.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Meteorology |
| Subjects: | 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia |
| Depositing User: | Marina Spanti |
| Date Deposited: | 12 Mar 2020 10:51 |
| Last Modified: | 12 Mar 2020 10:51 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/14789 |
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