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A sodar study of the temperature structure parameter in the convective boundary layer

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Abstract

From sodar measurements gathered during the Voves experiment (France, summer 1977), the variations of the temperature structure parameter C T 2 were studied in the morning planetary boundary layer. Dimensionless profiles of C T 2 are consistent with the mixed-layer scaling of Kaimal et al. (1976); however, for z < 0,5 z i, the decrease of C T 2 as z 4/3 should be weighted according to Frisch and Ochs (1975).

When the final breakup of the nocturnal inversion is achieved, the variations of the maximum of the C T 2 profile are in good agreement with those predicted by Wyngaard and Le Mone (1980). Discrepancies are observed mainly when the mixed layer is shallow and mechanical turbulence is important compared with buoyancy-driven turbulence.

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Authors and Affiliations

  1. Observatoire du Puy de Dôme, 63000, Clermont-Ferrand, France

    G. Dubosclard

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  1. G. Dubosclard
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Dubosclard, G. A sodar study of the temperature structure parameter in the convective boundary layer. Boundary-Layer Meteorol 22, 325–334 (1982). https://doi.org/10.1007/BF00120013

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  • DOI: https://doi.org/10.1007/BF00120013

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