M.Yabuki, M. Teshiba, K. Matsuki, T. Takeuchi, Y. Uchiho, T. Hasegawa
Kyoto University, Kyoto, Japan
Keywords: deep-ultraviolet Raman lidar, temperature, water vapor, ozone, aerosols
A lidar system with a deep-ultraviolet (UV) laser was developed to monitor the distributions of water vapor, temperature, and ozone in the atmospheric boundary layer for twenty-four hours. This robust system facilitates the continuous year-round operation of a high-power deep-UV laser in unmanned outdoor containers. In addition, the advanced spectroscopic system developed using a double monochromator enables highly precise atmospheric measurements. This lidar system provides meteorological measurements that can be used to detect water vapor and temperature, whereas environmental measurements can simultaneously capture ozone. This system can be further developed to detect organic substances, such as bioaerosols, using a deep-UV light source that can observe fluorescence. These lidar systems are currently used for advanced data, contributing to improving the accuracy of localized heavy-rain forecasts, as demonstrated by year-round observations implemented on two remote islands in Japan. This poster specifically explains the optical design, advantages, features, and applications of deep-UV Raman lidar systems.