The study of the atmospheric boundary layer (ABL) is essential for different types of investigations (studies of atmospheric properties, pollution monitoring, environmental studies). This thesis is devoted to the study of atmospheric properties in the ABL, the small-scale turbulence and precipitation from radar CURIE. The data CURIE, clear air with the wind, were analyzed and compared with other remote sensing instruments on the site SIRTA (UHF Radar, Sodar and Lidar). The results showed that CURIE is an appropriate instrument for the study of the ABL up to 700m altitude. Other parameters such as turbulence index Cn², radiative morning inversion and associated entrainment can be estimated. In case of precipitation, comparisons were made with a disdromètre and showed that CURIE in very low levels enables the study of precipitation. A case of snowfall was also studied. Methods of spectral representation and a method of separating signal from turbulence in the presence of precipitation have been developed to open a line of research, using radar CURIE for analysis of turbulent motions in the presence of precipitation.
