Abstract
A bistatic, CW (continuous wave) lidar (light detection and ranging) system has been developed at the Indian Institute of Tropical Meteorology, Pune, India for remote sounding of atmospheric aerosols. The system comprises a Spectra-Physics Model 159, 5 mW helium-neon laser as transmitter and a 25 cm Newtonian telescope-photomultiplier assembly as receiver. The details of the experimental set-up and results of preliminary observations of aerosols carried out in the lowest layers (up to 300 m AGL) of the atmosphere are presented. The results were found to be in agreement with those of the model predicted aerosol number density profile obtained by other investigators in the height region of observations. The variations in the height distribution of aerosols are explained in the light of the atmospheric conditions prevailing over the measuring site.
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