WIT Press

Study Of Atmospheric Dispersion Under Low Wind Speed Conditions

Price

Free (open access)

Paper DOI

10.2495/AIR950251

Volume

9

Pages

13

Published

1995

Size

1,174 kb

Copyright

WIT Press

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