Estimation of parameters of the inertial interval of turbulent temperature spectrum from time series of data from sonic weather stations
D.A. Marakasov, A.L. Afanas’ev, E.V. Gordeev
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: non-Kolmogorov turbulence, energy spectrum, structure constant, outer scale, sonic weather stations
Abstract
The basis for estimating turbulence characteristics using the primary output data of sonic weather stations is currently the classical Kolmogorov-Obukhov model of homogeneous and isotropic turbulence with a power-law structure function with an exponent of 2/3. In practice, such conditions are not always implemented in the atmosphere. In this article, to describe the non-Kolmogorov turbulence, an approach based on the use of a generalized power model with an exponent, a structural characteristic, and an outer scale estimated directly from the measured time series of instantaneous values of recorded meteorological parameters is suggested. The criteria of applicability of the model for estimating characteristics of real atmospheric turbulence are derived.
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