| everal different lidar analysis techniques have been applied to the measurements of atmospheric properties, with particular emphasis on temperature profile from the ground to 80 km using the Penn State lidar instrument. These different lidar techniques are the molecular scattering (Rayleigh) lidar with wavelength at 532 nm or 355 nm, the two-wavelength lidar using the combination of returns from wavelengths at 532 nm and 355 nm, and the molecular nitrogen scatter Raman lidar at a wavelength of 607 nm. In the upper stratosphere and mesosphere, from 30 km to 80 km, the single-wavelength molecular scatter lidar technique has proven successful and has been demonstrated to be preferable for measurements of atmospheric density and temperature using the molecular backscattered signal.;An important result from two-wavelength lidar is the ability to define the minimum height range that can be used for molecular scatter analysis. Further, the two-wavelength lidar technique has limited use for the stratospheric density and temperature measurements, this technique has been used to separate the molecular and particle portion of the backscattered signal in the upper region of the stratospheric volcanic aerosol layer, 27 km to about 35 km. By observing the two-wavelength particle backscatter ratio, we monitored the presence of volcanic particles and concluded that there were usually two or more particle types in the stratospheric aerosol layer during the LADIMAS Campaign, October through December 1991.;The tropospheric density and temperature profiles have been determined from the transmission-corrected vibrational... |
