Initial results from a volume scanning three wavelength polarization lidar

Clouds and aerosols play an important role in the radiative processes affecting the Earth´s climate and the thermodynamic properties of the atmosphere. Therefore, it is crucial to gain greater insight into the structure and composition of clouds and aerosols. One approach to achieving this consists of employing several different remote sensing systems operating at multiple wavelengths. At Penn State, an interdisciplinary group of researchers following this approach has developed a new research tool called WAVE-LARS (Water Aerosol Vapor Experiment-Lidar And Radar Sounder). This instrument includes a volume scanning 94 GHz radar, a volume scattering multi-wavelength lidar, and a vertically pointing Rayleigh/Raman lidar. The 94 GHz radar was based on a previous radar constructed at Penn State, augment ed with new volume scanning and polarization capabilities. This system provides vertical profiles of atmospheric water vapor and temperature. The theory, design, and initial results from the volume scanning lidar is discussed