Monin-Obukhov Functions for Standard Deviations of Velocity |
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Authors: | J D Wilson |
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Institution: | (1) Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB, Canada, T6G 2E3 |
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Abstract: | The origins of Monin-Obukhov similarity theory (MOST) are briefly reviewed, as a context for the analysis of signals from
sonic anemometers operating in the surface layer over a Utah salt flat. At this site (over the interval of these measurements)
the neutral limit for the normalized vertical velocity standard deviation (σ
w
/u
*) deviates markedly from what has generally been regarded as the standard value (i.e. about 1.3), suggesting (since others
have also reported such deviations) that this Monin-Obukhov constant is not, in fact, universal. New (but tentative) formulae
are suggested for σ
w
and for the longitudinal standard deviation σ
u
. |
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Keywords: | Atmospheric surface layer Monin-Obukhov similarity theory Turbulent velocity variance |
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