, Volume 119, Issue 3, pp 431-447

50 Years of the Monin–Obukhov Similarity Theory

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Abstract

This historical survey shows that Obukhov’s 1946 fundamental paper on a universal length scale for exchange processes in the surface layer was the basis for the derivation of the similarity theory by Monin and Obukhov in 1954. A brief overview of the experiments and findings used to formulate the universal functions in the presently used form is given. Finally, the current status of the theory is described, covering topics such as the accuracy of the universal functions and the turbulent Prandtl number.