Preliminary Tests of the Introduction of Lagrangian Dispersion Modelling in a 3-D Atmosperic Meso-Scale Numerical Model

Blondin, Christian; Therry, Gérard

doi:10.1007/978-1-4613-2691-5_8

Cited by 1 publication

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“…In the case of mesoscale studies of pollutant diffusion and transport, the use of an EKE model provides interesting information. Therefore, besides better wind and temperature profile predictions, it should permit better estimation of eddy-diffusivity coefficients in an Eulerian framework, and it should provide an essential parameter with which to estimate wind variance in a Lagrangian framework (Blondin and Therry, 1982).…”

Section: Discussionmentioning

confidence: 99%

Improving the Eddy Kinetic Energy model for planetary boundary layer description

Therry

Lacarrère

1983

Boundary-Layer Meteorol

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210

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Results from a third-order turbulence closure scheme model and from experimental studies are used to improve the Eddy Kinetic Energy (EKE) model for the Planetary Boundary Layer (PBL).It is proposed to use two different lengths, one for mixing and one for dissipation, as well as a temperature counter-gradient in the heat flux parameterization and a corrective term in the gradient-type relation for the computation of EKE flux. Such refinements do not lead to any increase in computing cost nor to any particular difficulty for the model implementation. They however allow for significantly better results, which are in close agreement with those of much more sophisticated models, at least in the case of the convective PBL, which is mainly considered here.

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Section: Discussionmentioning

confidence: 99%