Six experimental campaigns have been performed at the site of La Spezia gulf (northern Italy) from 1974 to 1977 jointly by three Italian research groups. Previous papers analyzed various aspects of the collected data. The present paper deals with three topics not covered by preceding analyses. In studying the pibal data set, the statistics of wind field from ground level to free atmosphere has been studied; then an empirical expression, relating sea breeze flow to geostrophic circulation, is proposed; finally, examining no-lift balloon trajectories, turbulent properties, such as diffusion coefficients, turbulence intensities and so on, have been evaluated. The effect of different surfaces, sea and land, on the turbulent parameters have been highlighted.
Vertical structure and turbulent properties of wind field observed at a coastal complex site
RICHIARDONE, Renzo;
1981-01-01
Abstract
Six experimental campaigns have been performed at the site of La Spezia gulf (northern Italy) from 1974 to 1977 jointly by three Italian research groups. Previous papers analyzed various aspects of the collected data. The present paper deals with three topics not covered by preceding analyses. In studying the pibal data set, the statistics of wind field from ground level to free atmosphere has been studied; then an empirical expression, relating sea breeze flow to geostrophic circulation, is proposed; finally, examining no-lift balloon trajectories, turbulent properties, such as diffusion coefficients, turbulence intensities and so on, have been evaluated. The effect of different surfaces, sea and land, on the turbulent parameters have been highlighted.
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