Joint use of ground-based LiDAR and sun-sky radiometer for observation of aerosol vertical distribution

Abstract

The vertical distributions of aerosols are obtained based on the micro-pulse LiDAR. We analyzed coefficients at different altitudes in January and February 2013. The results show that aerosol vertical distributions of clear days are non-homogeneous with multiple layers at different altitudes, while aerosols are concentrated in the layer below than about 1 km during severe haze days. Analyses show that aerosol extinction coefficients are larger in heavy haze days, reaching up to five times ofthat of medium polluted days and 50 times of that of clear days. It is also found that Aerosol Optical Depth(AOD) is in good relation to aerosol extinction coefficients at 400 m during this haze event.