Abstract
Abstract The aerosol vertical profiles (20–1000 m) obtained in the atmospheric boundary layer, on four nights, using a bistatic, CW Argon ion lidar system developed at the Indian Institute of Tropical Meteorology, Pune, India are presented. The profiles show a very steep negative gradient of aerosol concentration up to 150 m AGL and thereafter a smooth decrease with altitude. It appears that the aerosol profiles exhibit a stratified layer structure on certain days and show smooth altitudinal variation on other days. An attempt is made to explain the observed features on the basis of terrain effects at the lidar site and stratified turbulence (derived from pilot balloon wind observations) which prevailed on the days of the lidar observations.
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