Activities in 15 years of AD-Net, a lidar network for Asian dust studies

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Activities in 15 years of AD-Net, a lidar network for Asian dust studies

Atsushi Shimizu, Nobuo Sugimoto, Ichiro Matsui, Tomoaki Nishizawa, Yoshitaka Jin

Pp 106-110


A lidar network constructed by Mie-scattering lidars with polarization capabilities, named AD-Net (Asian dust and aerosol lidar observation network) has been operated in east Asian region to study the four dimensional distributions of various aerosol particles in this area. Especially Asian dust (Kosa) is significant atmospheric phenomena and has some environmental impact including health effects on human. Nowadays National Institute for Environmental Studies (NIES) is operating 20 lidars in collaboration with many organizations, and supplying obtained optical properties in the near real-time to the public. Two components of extinction coefficient (dust extinction and spherical particle extinction) are useful to indicate concentrations of both Asian dust particles and anthropogenic particles, respectively. Dust extinction is utilized in the epidemiology, and the result shows that Asian dust has some health impact in the east Asia. Expansion of lidar equipment (Raman channels, high spectral resolution) are also planned in AD-Net.

Keywords: Lidar; Asian dust; Vertical distributions; Environmental impact