Abstract :
This paper deals with the micrometeorological observations made in September 1992 at Klippeneck (Southern Germany) in the frame of the TRACT Campaign. A tower equipped with a sonic anemometer and fast-response sensors for humidity and ozone concentrations was used. Turbulent fluxes of sensible and latent heat, as well as of ozone, were determined by the eddy-correlation method. The measured fluxes undergo a daily cycle typical of clear sky conditions and of a well-evaporating grass-covered surface, reaching a maximum value at noon. A resistance analysis is made, showing the importance of stomatal activity.
