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Laboratory Experiments on Diffusion:. The Use of Convective Mixed-Layer Scaling

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  • 1 Department of Atmospheric Sciences, Oregon State University, Corvallis, OR 97331
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Abstract

A review is presented on laboratory modeling of diffusion downwind of a continuous point source within a boundary layer of well defined height with turbulence driven by buoyant convection. Results of using mixed-layer scaling are summarized and comparisons with atmospheric field measurements discussed. Concentration probability distributions from the laboratory as a function of dimensionless downwind distance are presented in a manner which discloses the differences from a lognormal distribution.

Abstract

A review is presented on laboratory modeling of diffusion downwind of a continuous point source within a boundary layer of well defined height with turbulence driven by buoyant convection. Results of using mixed-layer scaling are summarized and comparisons with atmospheric field measurements discussed. Concentration probability distributions from the laboratory as a function of dimensionless downwind distance are presented in a manner which discloses the differences from a lognormal distribution.

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