A note on free convection

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 1973 English Publisher:Springer Science and Business Media LLCJournal:Boundary-Layer Meteorology, volume 4, pages 323-326 (issn: 0006-8314, eissn: 1573-1472,

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Authors: J. A. Businger;

doi: 10.1007/bf02265241

A note on free convection

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Abstract

The limiting condition of µ*, →0 in the unstable atmospheric boundary layer is usually referred to as ‘free convection’. Some of the similarity laws that are proposed for this condition do not agree with experiment. A mechanism is proposed in this paper to show why the asymptotic free convection condition is never completely reached near the surface. It is shown that local turbulent shear production plays an important role in shaping the temperature profile even when the average velocity is zero.

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