Local Scales of Turbulence in the Stable Boundary Layer |
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| Authors: | Zbigniew Sorbjan |
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| Institution: | (1) Department of Physics, Marquette University, Milwaukee, WI 53201–1881, USA |
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| Abstract: | Local, gradient-based scales, which contain the vertical velocity and temperature variances, as well as the potential temperature
gradient, but do not include fluxes, are tested using data collected during the CASES-99 experiment. The observations show
that the scaling based on the temperature variance produces relatively smaller scatter of empirical points. The resulting
dimensionless statistical moments approach constant values for sufficiently large values of the Richardson number Ri. This allows one to derive predictions for the Monin–Obukhov similarity functions φ
m
and φ
h
, the Prandtl number Pr and the flux Richardson number Rf in weak turbulence regime. |
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| Keywords: | Gradient-based scaling Local scaling Similarity theory Stable boundary layer |
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