Aerosol Remote Sensing with LIDAR
Institute of Physics
Ministry of Science and Environmental Protection
National Development Project
LIDAR (LIght Detection And Ranging) technique based on the elastic backscattering of the emitted laser radiation by the atmospheric aerosols, allows the real time visualization of the suspended particles with high temporal and spatial resolution. Elastic backscatter LIDAR proposed in this project is intended for remote detection of aerosols in the atmosphere, at the altitudes up to 5 km, with resolution of 50 m, as the most of aerosol loading is present in the first 3 km height. It is based on a pulsed Nd:YAG laser source with 532 nm, and 1064 nm wavelengths, and the received signals provide the time-height indication of the atmosphere on the basis of aerosol optical parameters such as the backscattering and/or the extinction coefficients. The proposed two wavelenght backscattering system is pointing vertically and is operated in coaxial mode. The received backscattered radiation will be detected by detection system including photomultiplier (532 nm) and avalanche photodiode (1064 nm). The results of LIDAR experimental measurements will be analyzed using Dust Regional Atmospheric Modeling (DREAM) system in the case of transport of mineral aerosol for Saharan dust outbreak transported to our country. Organized LIDAR measurements together with simulations with meteorological models provide a basic tool in studies of aerosol transport over Europe and its impact on European climate.