Calibration Experiment of Vibrational Raman Lidar for Bottom Troposphere Carbon Dioxide Profile Detecting

Based on the principle of Raman scatting, the lower troposphere CO₂ profile monitoring vibrational Raman lidar system was developed. Combined with the use of three-dimensional optical scanning system, the lidar has the three-dimensional scanning function, which can realize the spatial distribution of atmospheric carbon dioxide profile monitoring. Combined with the lidar characteristic, a new calibration method of vibrational Raman lidar was presented, and the lidar system calibration experiments were carried out to obtain the profile line of carbon dioxide Hefei area. The calibration uncertainty of the experiments was analyzed and obtained the uncertain degree is 1%, the result proves the reliability of the calibration experiment method.