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Boundary-layer turbulence spectra in stable conditions

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Abstract

Simultaneous measurements of horizontal and vertical wind speeds and temperature fluctuations at heights up to 91 m in the stable atmospheric boundary layer are described. The power and cospectral shapes show a low-frequency peak (near the Brunt-Väisälä frequency) separated by a spectral gap from a peak at high frequency due to turbulence. Spectral shapes in the turbulence subrange at 8 m are in good agreement with the universal curves previously presented by Kaimal (1973). Further information is given on the variation of the scaling parameter, f 0, with stability; and the applicability of the normalising procedure to the spectra from the higher levels is discussed.

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Authors and Affiliations

  1. Meteorological Research Unit, RAF Cardington, Bedford, England

    S. J. Caughey

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  1. S. J. Caughey
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Caughey, S.J. Boundary-layer turbulence spectra in stable conditions. Boundary-Layer Meteorol 11, 3–14 (1977). https://doi.org/10.1007/BF00221819

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  • DOI: https://doi.org/10.1007/BF00221819

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