Abstract Above the boundary layer and outside convective systems, atmospheric turbulence generally occurs within a stably stratified environment. Experimental data clearly reveal that classical ideas about isotropy and inertiality of turbulence may then be questioned. Recent theoretical developments show a wide range of possible turbulent regimes, depending upon different physical hypotheses relating the dominant terms in the momentum and energy balances. The scaling of stratified turbulence proposed by /1/ will be extensively reviewed, such as present views of the tubulent buoyancy subrange. Key measurements appear to be those of temperature, vertical and horizontal velocities along vertical paths and, most of all, estimations of vertical heat flux (or mass flux) spectra. Recent atmospheric measurements acquired by a balloon borne instrumentation in the upper troposphere and lower stratosphere will be presented as they give some insight in these debates. Owing to its great practical importance, the problem of the relationships between temperature and velocities fluctuations will be specifically discussed.


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    Title :

    Turbulence in the stratified atmosphere: Recent theoretical developments and experimental results


    Contributors:
    Sidi, C. (author) / Dalaudier, F. (author)

    Published in:

    Publication date :

    1990-01-01


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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