Author(s)

P. Boyer, O. Masson, B. Carissimo & F. Anselmef

Abstract

This paper presents the analysis of atmospheric SF6 tracing experiments carried out under low wind speed conditions associated with strong thermal stability on a flat terrain. Analysis of meteorological data, processed in the form of probability densities, reveals that unsteady character of the current increase the greater the stability. The spectral densities of the three wind components deduced from sonic anemometers show that the horizontal current is dominated by large-scale turbulent structures, and that there is a weakening of energy levels in the neighborhood of 0, 01 Hz. Tracings confirm that the levels of ATC (At

Keywords