Space-borne Aerosol cloud High Spectral Resolution Lidar

The main spaceborne Payload ACDL (Aerosol and Carbon dioxide Detection Lidar) has been launched, tested and working in the 705 km orbit has three detection methods (HSRL, depolarization and energy detection), four laser wavelengths, five detection channels to acquire low altitude air optical properties to help quantify the impact of aerosols, clouds and fine particulate pollutants on the Earth's environment. The ACDL utilizes a Nd:YAG laser which incorporates a 1064nm stability master laser, a 1572 nm stability master laser, MOPA amplifier and Optical parameter oscillator to generate four wavelengths. The laser light scattered from aerosols back to the satellite, along with any solar background light, is collected by a one meter diameter telescope. The captured light is separated into five channels and obtained global aerosol attenuation backscattering coefficient, extinction coefficient depolarization ratio and so on. The presentation will describe the aerosol lidar present and discussion.